/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:45:40,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:45:40,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:45:40,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:45:40,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:45:40,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:45:40,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:45:40,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:45:40,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:45:40,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:45:40,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:45:40,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:45:40,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:45:40,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:45:40,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:45:40,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:45:40,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:45:40,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:45:40,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:45:40,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:45:40,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:45:40,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:45:40,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:45:40,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:45:40,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:45:40,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:45:40,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:45:40,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:45:40,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:45:40,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:45:40,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:45:40,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:45:40,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:45:40,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:45:40,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:45:40,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:45:40,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:45:40,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:45:40,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:45:40,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:45:40,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:45:40,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:45:40,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:45:40,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:45:40,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:45:40,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:45:40,640 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:45:40,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:45:40,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:45:40,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:45:40,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:45:40,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:45:40,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:45:40,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:45:40,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:45:40,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:45:40,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:45:40,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:45:40,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:45:40,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:45:40,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:45:40,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:45:40,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:45:40,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:45:40,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:45:40,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:45:40,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:45:40,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:45:40,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:45:40,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:45:40,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:45:40,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:45:41,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:45:41,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:45:41,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:45:41,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:45:41,174 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:45:41,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-26 23:45:41,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f4c7da/36816dbc3709446392f03ed7340674a4/FLAG2c5916be7 [2020-10-26 23:45:42,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:45:42,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-26 23:45:42,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f4c7da/36816dbc3709446392f03ed7340674a4/FLAG2c5916be7 [2020-10-26 23:45:42,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f4c7da/36816dbc3709446392f03ed7340674a4 [2020-10-26 23:45:42,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:45:42,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:45:42,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:42,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:45:42,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:45:42,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:42" (1/1) ... [2020-10-26 23:45:42,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:42, skipping insertion in model container [2020-10-26 23:45:42,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:42" (1/1) ... [2020-10-26 23:45:42,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:45:42,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:45:43,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:43,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:45:43,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:43,665 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:45:43,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43 WrapperNode [2020-10-26 23:45:43,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:43,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:45:43,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:45:43,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:45:43,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... [2020-10-26 23:45:43,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:45:43,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:45:43,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:45:43,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:45:43,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:45:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:45:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:45:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:45:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:45:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:45:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:45:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:45:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:45:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:45:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:45:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:45:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:45:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:45:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:45:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:45:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:45:47,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:45:47,794 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:45:47,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:47 BoogieIcfgContainer [2020-10-26 23:45:47,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:45:47,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:45:47,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:45:47,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:45:47,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:45:42" (1/3) ... [2020-10-26 23:45:47,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:47, skipping insertion in model container [2020-10-26 23:45:47,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:43" (2/3) ... [2020-10-26 23:45:47,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:47, skipping insertion in model container [2020-10-26 23:45:47,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:47" (3/3) ... [2020-10-26 23:45:47,809 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label44.c [2020-10-26 23:45:47,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:45:47,830 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:45:47,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:45:47,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:45:47,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:45:47,880 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:45:47,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:45:47,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:45:47,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:45:47,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:45:47,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:45:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:45:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 23:45:47,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:47,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:47,942 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1994623439, now seen corresponding path program 1 times [2020-10-26 23:45:47,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:47,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879277034] [2020-10-26 23:45:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:48,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:45:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-26 23:45:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:45:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:45:49,129 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:45:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:49,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:49,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:45:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:49,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879277034] [2020-10-26 23:45:49,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:49,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:45:49,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945862127] [2020-10-26 23:45:49,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:45:49,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:45:49,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:45:49,277 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:45:49,452 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:45:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:57,325 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-26 23:45:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:45:57,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-26 23:45:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:57,348 INFO L225 Difference]: With dead ends: 1208 [2020-10-26 23:45:57,349 INFO L226 Difference]: Without dead ends: 703 [2020-10-26 23:45:57,363 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 [2020-10-26 23:45:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-26 23:45:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-26 23:45:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-26 23:45:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-26 23:45:57,477 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 73 [2020-10-26 23:45:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:57,479 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-26 23:45:57,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:45:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-26 23:45:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-26 23:45:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:57,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:57,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:45:57,489 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1143823532, now seen corresponding path program 1 times [2020-10-26 23:45:57,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:57,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765774205] [2020-10-26 23:45:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:45:59,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1933 [2020-10-26 23:45:59,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:45:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 23:45:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:59,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:45:59,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:45:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:00,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:00,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:46:00,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:00,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-26 23:46:00,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:00,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:00,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:00,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:00,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:46:00,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765774205] [2020-10-26 23:46:00,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:00,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:46:00,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292356379] [2020-10-26 23:46:00,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:00,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:00,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:00,254 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-26 23:46:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:13,701 INFO L93 Difference]: Finished difference Result 2061 states and 3022 transitions. [2020-10-26 23:46:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:13,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-26 23:46:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:13,719 INFO L225 Difference]: With dead ends: 2061 [2020-10-26 23:46:13,719 INFO L226 Difference]: Without dead ends: 1370 [2020-10-26 23:46:13,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2020-10-26 23:46:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1333. [2020-10-26 23:46:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-26 23:46:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1725 transitions. [2020-10-26 23:46:13,828 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1725 transitions. Word has length 152 [2020-10-26 23:46:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:13,832 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1725 transitions. [2020-10-26 23:46:13,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1725 transitions. [2020-10-26 23:46:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-26 23:46:13,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:13,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:46:13,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:46:13,852 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash 424192968, now seen corresponding path program 1 times [2020-10-26 23:46:13,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:13,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448904779] [2020-10-26 23:46:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:14,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:19,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-26 23:46:19,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:46:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:46:19,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:46:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-26 23:46:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:19,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:19,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:46:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:19,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:19,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:46:19,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:19,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:46:19,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:46:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:46:19,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:46:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:20,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:46:20,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-26 23:46:20,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 55 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:46:20,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448904779] [2020-10-26 23:46:20,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:20,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:46:20,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604287084] [2020-10-26 23:46:20,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:46:20,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:46:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:20,902 INFO L87 Difference]: Start difference. First operand 1333 states and 1725 transitions. Second operand 12 states. [2020-10-26 23:46:22,565 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-26 23:46:22,913 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-26 23:46:23,071 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-10-26 23:46:24,061 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:46:24,419 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-26 23:46:24,589 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-26 23:46:24,896 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-26 23:46:26,393 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-26 23:46:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:35,125 INFO L93 Difference]: Finished difference Result 4055 states and 5358 transitions. [2020-10-26 23:46:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 23:46:35,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 247 [2020-10-26 23:46:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:35,144 INFO L225 Difference]: With dead ends: 4055 [2020-10-26 23:46:35,144 INFO L226 Difference]: Without dead ends: 2728 [2020-10-26 23:46:35,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=333, Invalid=999, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 23:46:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2020-10-26 23:46:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2296. [2020-10-26 23:46:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-10-26 23:46:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2945 transitions. [2020-10-26 23:46:35,238 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2945 transitions. Word has length 247 [2020-10-26 23:46:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:35,240 INFO L481 AbstractCegarLoop]: Abstraction has 2296 states and 2945 transitions. [2020-10-26 23:46:35,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:46:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2945 transitions. [2020-10-26 23:46:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-26 23:46:35,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:35,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:35,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:46:35,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:35,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1705360803, now seen corresponding path program 1 times [2020-10-26 23:46:35,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:35,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402208138] [2020-10-26 23:46:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:40,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:40,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-26 23:46:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:46:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-26 23:46:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:46:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:40,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:40,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:40,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:41,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:41,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:46:41,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:46:41,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:46:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:46:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:46:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:46:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 130 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:46:42,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402208138] [2020-10-26 23:46:42,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:42,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:46:42,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754154128] [2020-10-26 23:46:42,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:42,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:42,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:42,148 INFO L87 Difference]: Start difference. First operand 2296 states and 2945 transitions. Second operand 7 states. [2020-10-26 23:46:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:53,285 INFO L93 Difference]: Finished difference Result 5000 states and 6498 transitions. [2020-10-26 23:46:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:46:53,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-26 23:46:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:53,307 INFO L225 Difference]: With dead ends: 5000 [2020-10-26 23:46:53,307 INFO L226 Difference]: Without dead ends: 2710 [2020-10-26 23:46:53,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:46:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2020-10-26 23:46:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2615. [2020-10-26 23:46:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-10-26 23:46:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3276 transitions. [2020-10-26 23:46:53,416 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3276 transitions. Word has length 369 [2020-10-26 23:46:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:53,417 INFO L481 AbstractCegarLoop]: Abstraction has 2615 states and 3276 transitions. [2020-10-26 23:46:53,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3276 transitions. [2020-10-26 23:46:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-26 23:46:53,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:53,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:53,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:46:53,431 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:53,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:53,431 INFO L82 PathProgramCache]: Analyzing trace with hash 521658982, now seen corresponding path program 1 times [2020-10-26 23:46:53,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:53,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818202473] [2020-10-26 23:46:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:56,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-26 23:46:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2788 [2020-10-26 23:46:56,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:46:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:46:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:46:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:56,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:46:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:46:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:46:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:46:57,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:46:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:46:57,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818202473] [2020-10-26 23:46:57,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:57,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:46:57,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379189432] [2020-10-26 23:46:57,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:57,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:57,512 INFO L87 Difference]: Start difference. First operand 2615 states and 3276 transitions. Second operand 7 states. [2020-10-26 23:47:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:09,691 INFO L93 Difference]: Finished difference Result 5954 states and 7889 transitions. [2020-10-26 23:47:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:47:09,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-26 23:47:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:09,714 INFO L225 Difference]: With dead ends: 5954 [2020-10-26 23:47:09,714 INFO L226 Difference]: Without dead ends: 3652 [2020-10-26 23:47:09,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-10-26 23:47:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3609. [2020-10-26 23:47:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3609 states. [2020-10-26 23:47:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4467 transitions. [2020-10-26 23:47:09,859 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4467 transitions. Word has length 443 [2020-10-26 23:47:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:09,860 INFO L481 AbstractCegarLoop]: Abstraction has 3609 states and 4467 transitions. [2020-10-26 23:47:09,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4467 transitions. [2020-10-26 23:47:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-26 23:47:09,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:09,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:47:09,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:47:09,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1148437609, now seen corresponding path program 1 times [2020-10-26 23:47:09,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:09,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392940386] [2020-10-26 23:47:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:47:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:15,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:15,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:47:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:47:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:47:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:47:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:47:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:47:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:47:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:47:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 379 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:47:16,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392940386] [2020-10-26 23:47:16,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:16,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:16,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979732222] [2020-10-26 23:47:16,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:16,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:16,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:16,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:16,377 INFO L87 Difference]: Start difference. First operand 3609 states and 4467 transitions. Second operand 7 states. [2020-10-26 23:47:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:31,273 INFO L93 Difference]: Finished difference Result 8821 states and 11057 transitions. [2020-10-26 23:47:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:31,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-26 23:47:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:31,299 INFO L225 Difference]: With dead ends: 8821 [2020-10-26 23:47:31,299 INFO L226 Difference]: Without dead ends: 5203 [2020-10-26 23:47:31,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2020-10-26 23:47:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 4570. [2020-10-26 23:47:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4570 states. [2020-10-26 23:47:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 5435 transitions. [2020-10-26 23:47:31,450 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 5435 transitions. Word has length 464 [2020-10-26 23:47:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:31,451 INFO L481 AbstractCegarLoop]: Abstraction has 4570 states and 5435 transitions. [2020-10-26 23:47:31,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 5435 transitions. [2020-10-26 23:47:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-26 23:47:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:31,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:31,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:47:31,467 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1819777515, now seen corresponding path program 1 times [2020-10-26 23:47:31,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:31,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317705230] [2020-10-26 23:47:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:47:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 474 [2020-10-26 23:47:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:36,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:36,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:47:36,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:47:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:37,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:37,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:47:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:47:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:47:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:47:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:47:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 197 proven. 4 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-26 23:47:38,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317705230] [2020-10-26 23:47:38,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:38,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:47:38,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608882888] [2020-10-26 23:47:38,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:38,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:38,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:38,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:38,176 INFO L87 Difference]: Start difference. First operand 4570 states and 5435 transitions. Second operand 7 states. [2020-10-26 23:47:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:49,909 INFO L93 Difference]: Finished difference Result 12043 states and 14882 transitions. [2020-10-26 23:47:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:49,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-26 23:47:49,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:49,944 INFO L225 Difference]: With dead ends: 12043 [2020-10-26 23:47:49,944 INFO L226 Difference]: Without dead ends: 6829 [2020-10-26 23:47:49,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2020-10-26 23:47:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 6765. [2020-10-26 23:47:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-26 23:47:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 7748 transitions. [2020-10-26 23:47:50,178 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 7748 transitions. Word has length 539 [2020-10-26 23:47:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:50,179 INFO L481 AbstractCegarLoop]: Abstraction has 6765 states and 7748 transitions. [2020-10-26 23:47:50,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 7748 transitions. [2020-10-26 23:47:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-26 23:47:50,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:50,202 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:47:50,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:47:50,203 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1806522543, now seen corresponding path program 1 times [2020-10-26 23:47:50,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:50,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679544833] [2020-10-26 23:47:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:55,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:47:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:55,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:47:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:47:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:55,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:55,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:47:56,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:47:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:47:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:47:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:47:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 307 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:47:56,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679544833] [2020-10-26 23:47:56,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:56,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:56,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519282666] [2020-10-26 23:47:56,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:56,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:56,731 INFO L87 Difference]: Start difference. First operand 6765 states and 7748 transitions. Second operand 7 states. [2020-10-26 23:48:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:07,332 INFO L93 Difference]: Finished difference Result 14551 states and 16686 transitions. [2020-10-26 23:48:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:48:07,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2020-10-26 23:48:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:07,366 INFO L225 Difference]: With dead ends: 14551 [2020-10-26 23:48:07,367 INFO L226 Difference]: Without dead ends: 8099 [2020-10-26 23:48:07,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2020-10-26 23:48:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 8033. [2020-10-26 23:48:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8033 states. [2020-10-26 23:48:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8033 states to 8033 states and 9085 transitions. [2020-10-26 23:48:07,664 INFO L78 Accepts]: Start accepts. Automaton has 8033 states and 9085 transitions. Word has length 554 [2020-10-26 23:48:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:07,665 INFO L481 AbstractCegarLoop]: Abstraction has 8033 states and 9085 transitions. [2020-10-26 23:48:07,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8033 states and 9085 transitions. [2020-10-26 23:48:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-26 23:48:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:07,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:48:07,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:48:07,679 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:07,680 INFO L82 PathProgramCache]: Analyzing trace with hash -235480487, now seen corresponding path program 1 times [2020-10-26 23:48:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:07,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891138073] [2020-10-26 23:48:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2934 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:48:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:10,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:10,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:10,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:10,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:10,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:11,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:11,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:11,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:11,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:48:11,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:11,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:11,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:11,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:11,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:48:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:11,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891138073] [2020-10-26 23:48:11,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:11,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:11,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598612260] [2020-10-26 23:48:11,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:11,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:11,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:11,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:11,671 INFO L87 Difference]: Start difference. First operand 8033 states and 9085 transitions. Second operand 7 states. [2020-10-26 23:48:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:22,342 INFO L93 Difference]: Finished difference Result 21446 states and 24586 transitions. [2020-10-26 23:48:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:22,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-26 23:48:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:22,396 INFO L225 Difference]: With dead ends: 21446 [2020-10-26 23:48:22,397 INFO L226 Difference]: Without dead ends: 13726 [2020-10-26 23:48:22,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13726 states. [2020-10-26 23:48:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13726 to 10940. [2020-10-26 23:48:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10940 states. [2020-10-26 23:48:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10940 states to 10940 states and 12606 transitions. [2020-10-26 23:48:22,734 INFO L78 Accepts]: Start accepts. Automaton has 10940 states and 12606 transitions. Word has length 566 [2020-10-26 23:48:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:22,735 INFO L481 AbstractCegarLoop]: Abstraction has 10940 states and 12606 transitions. [2020-10-26 23:48:22,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10940 states and 12606 transitions. [2020-10-26 23:48:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-26 23:48:22,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:22,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:22,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:48:22,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash -21624019, now seen corresponding path program 1 times [2020-10-26 23:48:22,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:22,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605625935] [2020-10-26 23:48:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3245 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:48:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:26,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:26,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:26,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:26,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:48:26,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:48:26,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:48:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:27,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605625935] [2020-10-26 23:48:27,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:27,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:27,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972820182] [2020-10-26 23:48:27,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:27,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:27,038 INFO L87 Difference]: Start difference. First operand 10940 states and 12606 transitions. Second operand 7 states. [2020-10-26 23:48:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:37,540 INFO L93 Difference]: Finished difference Result 24753 states and 29412 transitions. [2020-10-26 23:48:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:37,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 576 [2020-10-26 23:48:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:37,586 INFO L225 Difference]: With dead ends: 24753 [2020-10-26 23:48:37,586 INFO L226 Difference]: Without dead ends: 14126 [2020-10-26 23:48:37,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2020-10-26 23:48:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 13779. [2020-10-26 23:48:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13779 states. [2020-10-26 23:48:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 15778 transitions. [2020-10-26 23:48:37,921 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 15778 transitions. Word has length 576 [2020-10-26 23:48:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:37,922 INFO L481 AbstractCegarLoop]: Abstraction has 13779 states and 15778 transitions. [2020-10-26 23:48:37,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 15778 transitions. [2020-10-26 23:48:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-26 23:48:37,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:37,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:48:37,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:48:37,933 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1189665803, now seen corresponding path program 1 times [2020-10-26 23:48:37,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:37,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085420097] [2020-10-26 23:48:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-26 23:48:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-26 23:48:40,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:48:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:40,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:48:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:40,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:41,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:41,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:41,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:48:41,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:48:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:41,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085420097] [2020-10-26 23:48:41,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:41,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:41,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081919343] [2020-10-26 23:48:41,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:41,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:41,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:41,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:41,574 INFO L87 Difference]: Start difference. First operand 13779 states and 15778 transitions. Second operand 7 states. [2020-10-26 23:48:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:52,306 INFO L93 Difference]: Finished difference Result 32503 states and 37834 transitions. [2020-10-26 23:48:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:48:52,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 598 [2020-10-26 23:48:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:52,379 INFO L225 Difference]: With dead ends: 32503 [2020-10-26 23:48:52,379 INFO L226 Difference]: Without dead ends: 19037 [2020-10-26 23:48:52,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19037 states. [2020-10-26 23:48:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19037 to 17167. [2020-10-26 23:48:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17167 states. [2020-10-26 23:48:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17167 states to 17167 states and 19784 transitions. [2020-10-26 23:48:52,796 INFO L78 Accepts]: Start accepts. Automaton has 17167 states and 19784 transitions. Word has length 598 [2020-10-26 23:48:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:52,797 INFO L481 AbstractCegarLoop]: Abstraction has 17167 states and 19784 transitions. [2020-10-26 23:48:52,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 17167 states and 19784 transitions. [2020-10-26 23:48:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-26 23:48:52,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:52,820 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:48:52,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:48:52,820 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:52,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1688748642, now seen corresponding path program 1 times [2020-10-26 23:48:52,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:52,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377445312] [2020-10-26 23:48:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 773 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:48:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:48:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:48:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:48:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:48:58,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:48:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-26 23:48:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:48:58,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:48:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-26 23:48:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 935 backedges. 427 proven. 79 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2020-10-26 23:48:59,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377445312] [2020-10-26 23:48:59,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:59,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:59,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546867639] [2020-10-26 23:48:59,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:59,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:59,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:59,148 INFO L87 Difference]: Start difference. First operand 17167 states and 19784 transitions. Second operand 7 states. [2020-10-26 23:49:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:12,759 INFO L93 Difference]: Finished difference Result 44295 states and 51620 transitions. [2020-10-26 23:49:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:49:12,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 755 [2020-10-26 23:49:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:12,841 INFO L225 Difference]: With dead ends: 44295 [2020-10-26 23:49:12,842 INFO L226 Difference]: Without dead ends: 27441 [2020-10-26 23:49:12,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27441 states. [2020-10-26 23:49:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27441 to 26797. [2020-10-26 23:49:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26797 states. [2020-10-26 23:49:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26797 states to 26797 states and 30437 transitions. [2020-10-26 23:49:13,373 INFO L78 Accepts]: Start accepts. Automaton has 26797 states and 30437 transitions. Word has length 755 [2020-10-26 23:49:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:13,374 INFO L481 AbstractCegarLoop]: Abstraction has 26797 states and 30437 transitions. [2020-10-26 23:49:13,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 26797 states and 30437 transitions. [2020-10-26 23:49:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-26 23:49:13,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:13,399 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:13,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:49:13,400 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:13,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1842737435, now seen corresponding path program 1 times [2020-10-26 23:49:13,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:13,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201652277] [2020-10-26 23:49:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4844 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:49:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:49:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:19,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:49:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-26 23:49:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:19,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:49:19,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 23:49:19,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:49:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-26 23:49:19,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201652277] [2020-10-26 23:49:19,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:19,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:19,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471279422] [2020-10-26 23:49:19,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:19,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:19,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:19,982 INFO L87 Difference]: Start difference. First operand 26797 states and 30437 transitions. Second operand 7 states.