/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:37:33,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:37:33,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:37:33,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:37:33,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:37:33,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:37:33,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:37:33,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:37:33,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:37:33,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:37:33,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:37:33,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:37:33,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:37:33,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:37:33,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:37:33,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:37:33,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:37:33,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:37:33,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:37:33,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:37:33,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:37:33,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:37:33,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:37:33,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:37:33,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:37:33,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:37:33,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:37:33,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:37:33,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:37:33,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:37:33,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:37:33,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:37:33,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:37:33,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:37:33,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:37:33,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:37:33,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:37:33,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:37:33,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:37:33,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:37:33,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:37:34,000 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 [2020-10-28 18:37:34,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:37:34,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:37:34,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:37:34,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:37:34,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:37:34,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:37:34,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:37:34,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:37:34,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:37:34,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:37:34,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:37:34,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:37:34,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:37:34,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:37:34,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:37:34,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:37:34,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:37:34,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:37:34,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:37:34,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:37:34,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:37:34,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:37:34,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:37:34,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:37:34,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:37:34,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:37:34,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:37:34,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:37:34,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:37:34,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:37:34,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:37:34,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876a7da0/c2242434575348f3b2f0e1ff3211ff88/FLAG7d9142159 [2020-10-28 18:37:35,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:37:35,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:37:35,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876a7da0/c2242434575348f3b2f0e1ff3211ff88/FLAG7d9142159 [2020-10-28 18:37:35,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876a7da0/c2242434575348f3b2f0e1ff3211ff88 [2020-10-28 18:37:35,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:37:35,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:37:35,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:37:35,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:37:35,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:37:35,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:37:35" (1/1) ... [2020-10-28 18:37:35,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fede82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:35, skipping insertion in model container [2020-10-28 18:37:35,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:37:35" (1/1) ... [2020-10-28 18:37:35,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:37:35,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:37:36,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:37:36,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:37:36,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:37:36,382 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:37:36,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36 WrapperNode [2020-10-28 18:37:36,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:37:36,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:37:36,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:37:36,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:37:36,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (1/1) ... [2020-10-28 18:37:36,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:37:36,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:37:36,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:37:36,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:37:36,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (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 [2020-10-28 18:37:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:37:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:37:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:37:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:37:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:37:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:37:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:37:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:37:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:37:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:37:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:37:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:37:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:37:37,871 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:37:37,871 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:37:37,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:37:37 BoogieIcfgContainer [2020-10-28 18:37:37,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:37:37,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:37:37,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:37:37,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:37:37,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:37:35" (1/3) ... [2020-10-28 18:37:37,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44286c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:37:37, skipping insertion in model container [2020-10-28 18:37:37,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:37:36" (2/3) ... [2020-10-28 18:37:37,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44286c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:37:37, skipping insertion in model container [2020-10-28 18:37:37,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:37:37" (3/3) ... [2020-10-28 18:37:37,886 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:37:37,900 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:37:37,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:37:37,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:37:37,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:37:37,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:37:37,969 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:37:37,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:37:37,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:37:37,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:37:37,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:37:37,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:37:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-28 18:37:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 18:37:38,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:38,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:37:38,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:38,032 INFO L82 PathProgramCache]: Analyzing trace with hash 691850863, now seen corresponding path program 1 times [2020-10-28 18:37:38,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:38,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954981570] [2020-10-28 18:37:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:43,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:43,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 18:37:43,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:37:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:37:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:43,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:37:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 18:37:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:37:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:37:43,914 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:37:43,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:43,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:43,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:37:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:43,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:37:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:44,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954981570] [2020-10-28 18:37:44,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:44,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:37:44,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215842837] [2020-10-28 18:37:44,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:37:44,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:44,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:37:44,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:37:44,038 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-10-28 18:37:44,401 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:37:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:45,506 INFO L93 Difference]: Finished difference Result 308 states and 504 transitions. [2020-10-28 18:37:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:37:45,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-28 18:37:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:45,543 INFO L225 Difference]: With dead ends: 308 [2020-10-28 18:37:45,544 INFO L226 Difference]: Without dead ends: 231 [2020-10-28 18:37:45,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:37:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-28 18:37:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-10-28 18:37:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-28 18:37:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 326 transitions. [2020-10-28 18:37:45,686 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 326 transitions. Word has length 81 [2020-10-28 18:37:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:45,689 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 326 transitions. [2020-10-28 18:37:45,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:37:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 326 transitions. [2020-10-28 18:37:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 18:37:45,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:45,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:37:45,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:37:45,700 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -580331724, now seen corresponding path program 1 times [2020-10-28 18:37:45,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:45,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007346524] [2020-10-28 18:37:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 18:37:50,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:37:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:37:50,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:50,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:37:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:37:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 18:37:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:37:51,186 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:37:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 18:37:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:51,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:37:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:37:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:37:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:51,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007346524] [2020-10-28 18:37:51,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:51,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:37:51,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257643459] [2020-10-28 18:37:51,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:37:51,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:37:51,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:37:51,300 INFO L87 Difference]: Start difference. First operand 228 states and 326 transitions. Second operand 6 states. [2020-10-28 18:37:51,647 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:37:52,338 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:37:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:52,693 INFO L93 Difference]: Finished difference Result 543 states and 812 transitions. [2020-10-28 18:37:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:37:52,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-28 18:37:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:52,697 INFO L225 Difference]: With dead ends: 543 [2020-10-28 18:37:52,697 INFO L226 Difference]: Without dead ends: 365 [2020-10-28 18:37:52,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:37:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-28 18:37:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2020-10-28 18:37:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-28 18:37:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 534 transitions. [2020-10-28 18:37:52,744 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 534 transitions. Word has length 83 [2020-10-28 18:37:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:52,745 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 534 transitions. [2020-10-28 18:37:52,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:37:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 534 transitions. [2020-10-28 18:37:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 18:37:52,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:52,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:37:52,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:37:52,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:52,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1660736605, now seen corresponding path program 1 times [2020-10-28 18:37:52,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:52,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87633472] [2020-10-28 18:37:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:57,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:57,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 18:37:57,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:37:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:37:57,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:57,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:37:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 18:37:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:58,367 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:37:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:37:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:58,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:37:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:58,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87633472] [2020-10-28 18:37:58,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:58,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:37:58,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892222282] [2020-10-28 18:37:58,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:37:58,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:37:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:37:58,436 INFO L87 Difference]: Start difference. First operand 362 states and 534 transitions. Second operand 8 states. [2020-10-28 18:37:58,764 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:37:59,791 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:38:01,036 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:38:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:01,209 INFO L93 Difference]: Finished difference Result 3130 states and 4814 transitions. [2020-10-28 18:38:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 18:38:01,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-28 18:38:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:01,230 INFO L225 Difference]: With dead ends: 3130 [2020-10-28 18:38:01,230 INFO L226 Difference]: Without dead ends: 2835 [2020-10-28 18:38:01,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-28 18:38:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2020-10-28 18:38:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1116. [2020-10-28 18:38:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-10-28 18:38:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1703 transitions. [2020-10-28 18:38:01,362 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1703 transitions. Word has length 84 [2020-10-28 18:38:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:01,363 INFO L481 AbstractCegarLoop]: Abstraction has 1116 states and 1703 transitions. [2020-10-28 18:38:01,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:38:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1703 transitions. [2020-10-28 18:38:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 18:38:01,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:01,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:01,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:38:01,367 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1757742606, now seen corresponding path program 1 times [2020-10-28 18:38:01,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:01,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692593813] [2020-10-28 18:38:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 18:38:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:38:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:38:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:06,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:38:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:38:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:38:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:38:06,785 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:06,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:38:06,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:06,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:38:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:38:06,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:06,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692593813] [2020-10-28 18:38:06,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:06,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:38:06,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174762990] [2020-10-28 18:38:06,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:38:06,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:06,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:38:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:38:06,837 INFO L87 Difference]: Start difference. First operand 1116 states and 1703 transitions. Second operand 8 states. [2020-10-28 18:38:07,160 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 18:38:07,971 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:38:08,257 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:38:08,535 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:38:08,888 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:38:09,212 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:38:09,517 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:38:09,869 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:38:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:10,576 INFO L93 Difference]: Finished difference Result 5424 states and 8409 transitions. [2020-10-28 18:38:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:38:10,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-28 18:38:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:10,603 INFO L225 Difference]: With dead ends: 5424 [2020-10-28 18:38:10,603 INFO L226 Difference]: Without dead ends: 4517 [2020-10-28 18:38:10,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:38:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2020-10-28 18:38:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 1584. [2020-10-28 18:38:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-10-28 18:38:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2439 transitions. [2020-10-28 18:38:10,801 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2439 transitions. Word has length 84 [2020-10-28 18:38:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:10,802 INFO L481 AbstractCegarLoop]: Abstraction has 1584 states and 2439 transitions. [2020-10-28 18:38:10,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:38:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2439 transitions. [2020-10-28 18:38:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 18:38:10,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:10,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:10,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:38:10,806 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash -693919223, now seen corresponding path program 1 times [2020-10-28 18:38:10,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:10,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500843924] [2020-10-28 18:38:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:15,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 18:38:15,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:38:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:38:15,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:15,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 18:38:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:16,269 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 18:38:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:38:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:38:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:38:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:16,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500843924] [2020-10-28 18:38:16,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:16,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:38:16,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793061888] [2020-10-28 18:38:16,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:38:16,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:16,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:38:16,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:38:16,362 INFO L87 Difference]: Start difference. First operand 1584 states and 2439 transitions. Second operand 6 states. [2020-10-28 18:38:16,674 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:38:17,320 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:38:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:17,730 INFO L93 Difference]: Finished difference Result 2607 states and 4042 transitions. [2020-10-28 18:38:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:38:17,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-28 18:38:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:17,738 INFO L225 Difference]: With dead ends: 2607 [2020-10-28 18:38:17,738 INFO L226 Difference]: Without dead ends: 1160 [2020-10-28 18:38:17,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:38:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-10-28 18:38:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1157. [2020-10-28 18:38:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-28 18:38:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1768 transitions. [2020-10-28 18:38:17,839 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1768 transitions. Word has length 84 [2020-10-28 18:38:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:17,841 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1768 transitions. [2020-10-28 18:38:17,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:38:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1768 transitions. [2020-10-28 18:38:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 18:38:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:17,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:17,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:38:17,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash -227186124, now seen corresponding path program 1 times [2020-10-28 18:38:17,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:17,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443035679] [2020-10-28 18:38:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:17,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:22,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 18:38:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:38:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:23,191 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:38:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:38:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:23,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443035679] [2020-10-28 18:38:23,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:23,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:38:23,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712580191] [2020-10-28 18:38:23,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:38:23,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:38:23,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:38:23,251 INFO L87 Difference]: Start difference. First operand 1157 states and 1768 transitions. Second operand 6 states. [2020-10-28 18:38:23,523 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-28 18:38:24,655 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:38:24,934 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-28 18:38:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:26,424 INFO L93 Difference]: Finished difference Result 9649 states and 14968 transitions. [2020-10-28 18:38:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:38:26,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-28 18:38:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:26,472 INFO L225 Difference]: With dead ends: 9649 [2020-10-28 18:38:26,472 INFO L226 Difference]: Without dead ends: 8595 [2020-10-28 18:38:26,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:38:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8595 states. [2020-10-28 18:38:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8595 to 4406. [2020-10-28 18:38:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2020-10-28 18:38:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6794 transitions. [2020-10-28 18:38:26,938 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6794 transitions. Word has length 85 [2020-10-28 18:38:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:26,938 INFO L481 AbstractCegarLoop]: Abstraction has 4406 states and 6794 transitions. [2020-10-28 18:38:26,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:38:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6794 transitions. [2020-10-28 18:38:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 18:38:26,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:26,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:26,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:38:26,942 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:26,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1713125344, now seen corresponding path program 1 times [2020-10-28 18:38:26,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:26,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414584213] [2020-10-28 18:38:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:31,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:31,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:31,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:31,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 18:38:31,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:38:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 18:38:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:32,220 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-28 18:38:32,507 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:32,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:38:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:38:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:32,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414584213] [2020-10-28 18:38:32,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:32,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:38:32,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634651407] [2020-10-28 18:38:32,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:38:32,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:38:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:38:32,558 INFO L87 Difference]: Start difference. First operand 4406 states and 6794 transitions. Second operand 8 states. [2020-10-28 18:38:32,918 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 18:38:33,982 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:38:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:35,001 INFO L93 Difference]: Finished difference Result 8588 states and 13284 transitions. [2020-10-28 18:38:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:38:35,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-28 18:38:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:35,024 INFO L225 Difference]: With dead ends: 8588 [2020-10-28 18:38:35,024 INFO L226 Difference]: Without dead ends: 4409 [2020-10-28 18:38:35,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:38:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2020-10-28 18:38:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4406. [2020-10-28 18:38:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2020-10-28 18:38:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6792 transitions. [2020-10-28 18:38:35,581 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6792 transitions. Word has length 85 [2020-10-28 18:38:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:35,582 INFO L481 AbstractCegarLoop]: Abstraction has 4406 states and 6792 transitions. [2020-10-28 18:38:35,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:38:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6792 transitions. [2020-10-28 18:38:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 18:38:35,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:35,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:35,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:38:35,585 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -248964255, now seen corresponding path program 1 times [2020-10-28 18:38:35,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:35,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82199934] [2020-10-28 18:38:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:40,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:40,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:38:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 18:38:40,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:40,930 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:40,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:38:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:40,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:38:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:38:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:38:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:41,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82199934] [2020-10-28 18:38:41,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:41,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:38:41,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980405166] [2020-10-28 18:38:41,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:38:41,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:41,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:38:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:38:41,013 INFO L87 Difference]: Start difference. First operand 4406 states and 6792 transitions. Second operand 6 states. [2020-10-28 18:38:41,302 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:38:42,061 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:38:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:43,181 INFO L93 Difference]: Finished difference Result 12839 states and 19825 transitions. [2020-10-28 18:38:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:38:43,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-28 18:38:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:43,219 INFO L225 Difference]: With dead ends: 12839 [2020-10-28 18:38:43,219 INFO L226 Difference]: Without dead ends: 8499 [2020-10-28 18:38:43,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:38:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2020-10-28 18:38:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8496. [2020-10-28 18:38:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8496 states. [2020-10-28 18:38:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8496 states to 8496 states and 13028 transitions. [2020-10-28 18:38:44,089 INFO L78 Accepts]: Start accepts. Automaton has 8496 states and 13028 transitions. Word has length 86 [2020-10-28 18:38:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:44,089 INFO L481 AbstractCegarLoop]: Abstraction has 8496 states and 13028 transitions. [2020-10-28 18:38:44,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:38:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8496 states and 13028 transitions. [2020-10-28 18:38:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 18:38:44,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:44,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:44,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:38:44,093 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:44,093 INFO L82 PathProgramCache]: Analyzing trace with hash -471559609, now seen corresponding path program 1 times [2020-10-28 18:38:44,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:44,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826410304] [2020-10-28 18:38:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:49,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 18:38:49,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 18:38:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:49,443 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:38:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:49,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826410304] [2020-10-28 18:38:49,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:49,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:38:49,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021198630] [2020-10-28 18:38:49,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:38:49,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:49,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:38:49,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:38:49,491 INFO L87 Difference]: Start difference. First operand 8496 states and 13028 transitions. Second operand 6 states. [2020-10-28 18:38:49,805 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:38:50,596 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:38:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:52,313 INFO L93 Difference]: Finished difference Result 25107 states and 38499 transitions. [2020-10-28 18:38:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:38:52,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-28 18:38:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:52,354 INFO L225 Difference]: With dead ends: 25107 [2020-10-28 18:38:52,355 INFO L226 Difference]: Without dead ends: 16661 [2020-10-28 18:38:52,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:38:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16661 states. [2020-10-28 18:38:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16661 to 16658. [2020-10-28 18:38:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16658 states. [2020-10-28 18:38:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16658 states to 16658 states and 25376 transitions. [2020-10-28 18:38:53,939 INFO L78 Accepts]: Start accepts. Automaton has 16658 states and 25376 transitions. Word has length 87 [2020-10-28 18:38:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:53,940 INFO L481 AbstractCegarLoop]: Abstraction has 16658 states and 25376 transitions. [2020-10-28 18:38:53,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:38:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 16658 states and 25376 transitions. [2020-10-28 18:38:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 18:38:53,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:53,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:53,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:38:53,945 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1171337793, now seen corresponding path program 1 times [2020-10-28 18:38:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:53,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137579120] [2020-10-28 18:38:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:59,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:59,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 18:38:59,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:38:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 18:38:59,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:59,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:38:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:38:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:38:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:59,367 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:38:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:59,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:59,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:38:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:59,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:38:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:38:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:59,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137579120] [2020-10-28 18:38:59,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:59,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:38:59,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129299499] [2020-10-28 18:38:59,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:38:59,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:59,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:38:59,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:38:59,442 INFO L87 Difference]: Start difference. First operand 16658 states and 25376 transitions. Second operand 6 states. [2020-10-28 18:38:59,789 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:39:00,734 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:39:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:39:02,147 INFO L93 Difference]: Finished difference Result 24584 states and 37500 transitions. [2020-10-28 18:39:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:39:02,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-28 18:39:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:39:02,175 INFO L225 Difference]: With dead ends: 24584 [2020-10-28 18:39:02,175 INFO L226 Difference]: Without dead ends: 12328 [2020-10-28 18:39:02,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:39:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2020-10-28 18:39:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 8329. [2020-10-28 18:39:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8329 states. [2020-10-28 18:39:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 12623 transitions. [2020-10-28 18:39:03,103 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 12623 transitions. Word has length 88 [2020-10-28 18:39:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:39:03,104 INFO L481 AbstractCegarLoop]: Abstraction has 8329 states and 12623 transitions. [2020-10-28 18:39:03,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:39:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 12623 transitions. [2020-10-28 18:39:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 18:39:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:39:03,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:39:03,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:39:03,107 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:39:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:39:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -215040289, now seen corresponding path program 1 times [2020-10-28 18:39:03,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:39:03,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701071744] [2020-10-28 18:39:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:39:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:39:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:39:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:08,430 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:39:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:39:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:39:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:39:08,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701071744] [2020-10-28 18:39:08,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:39:08,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:39:08,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499411710] [2020-10-28 18:39:08,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:39:08,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:39:08,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:39:08,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:39:08,470 INFO L87 Difference]: Start difference. First operand 8329 states and 12623 transitions. Second operand 6 states. [2020-10-28 18:39:08,796 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:39:09,541 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:39:09,873 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:39:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:39:11,915 INFO L93 Difference]: Finished difference Result 21736 states and 32852 transitions. [2020-10-28 18:39:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:39:11,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-28 18:39:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:39:11,945 INFO L225 Difference]: With dead ends: 21736 [2020-10-28 18:39:11,946 INFO L226 Difference]: Without dead ends: 16517 [2020-10-28 18:39:11,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:39:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16517 states. [2020-10-28 18:39:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16517 to 13863. [2020-10-28 18:39:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13863 states. [2020-10-28 18:39:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13863 states to 13863 states and 21062 transitions. [2020-10-28 18:39:13,540 INFO L78 Accepts]: Start accepts. Automaton has 13863 states and 21062 transitions. Word has length 88 [2020-10-28 18:39:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:39:13,541 INFO L481 AbstractCegarLoop]: Abstraction has 13863 states and 21062 transitions. [2020-10-28 18:39:13,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:39:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13863 states and 21062 transitions. [2020-10-28 18:39:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 18:39:13,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:39:13,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:39:13,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:39:13,545 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:39:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:39:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 127556630, now seen corresponding path program 1 times [2020-10-28 18:39:13,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:39:13,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473262020] [2020-10-28 18:39:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:39:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:39:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:18,887 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:39:18,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:39:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:18,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:18,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:39:18,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:39:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:39:18,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:18,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:39:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:39:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:39:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:39:18,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473262020] [2020-10-28 18:39:18,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:39:18,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:39:18,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126068692] [2020-10-28 18:39:18,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:39:18,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:39:18,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:39:18,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:39:18,926 INFO L87 Difference]: Start difference. First operand 13863 states and 21062 transitions. Second operand 8 states. [2020-10-28 18:39:19,255 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 18:39:20,196 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:39:20,456 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:39:20,733 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:39:21,089 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:39:21,392 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:39:21,699 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:39:21,991 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:39:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:39:26,893 INFO L93 Difference]: Finished difference Result 56644 states and 85882 transitions. [2020-10-28 18:39:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:39:26,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 18:39:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:39:26,956 INFO L225 Difference]: With dead ends: 56644 [2020-10-28 18:39:26,956 INFO L226 Difference]: Without dead ends: 48721 [2020-10-28 18:39:26,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:39:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48721 states. [2020-10-28 18:39:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48721 to 21990. [2020-10-28 18:39:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21990 states. [2020-10-28 18:39:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21990 states to 21990 states and 33461 transitions. [2020-10-28 18:39:30,093 INFO L78 Accepts]: Start accepts. Automaton has 21990 states and 33461 transitions. Word has length 89 [2020-10-28 18:39:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:39:30,093 INFO L481 AbstractCegarLoop]: Abstraction has 21990 states and 33461 transitions. [2020-10-28 18:39:30,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:39:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 21990 states and 33461 transitions. [2020-10-28 18:39:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 18:39:30,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:39:30,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:39:30,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:39:30,097 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:39:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:39:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1965406281, now seen corresponding path program 1 times [2020-10-28 18:39:30,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:39:30,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673380363] [2020-10-28 18:39:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:39:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 18:39:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 18:39:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:35,437 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:39:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:39:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:39:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:39:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:39:35,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:35,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:39:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:39:35,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673380363] [2020-10-28 18:39:35,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:39:35,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:39:35,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468991240] [2020-10-28 18:39:35,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:39:35,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:39:35,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:39:35,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:39:35,470 INFO L87 Difference]: Start difference. First operand 21990 states and 33461 transitions. Second operand 4 states. [2020-10-28 18:39:35,750 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:39:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:39:39,715 INFO L93 Difference]: Finished difference Result 51548 states and 78537 transitions. [2020-10-28 18:39:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:39:39,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 18:39:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:39:39,749 INFO L225 Difference]: With dead ends: 51548 [2020-10-28 18:39:39,749 INFO L226 Difference]: Without dead ends: 30105 [2020-10-28 18:39:39,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:39:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30105 states. [2020-10-28 18:39:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30105 to 30102. [2020-10-28 18:39:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30102 states. [2020-10-28 18:39:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30102 states to 30102 states and 45461 transitions. [2020-10-28 18:39:43,616 INFO L78 Accepts]: Start accepts. Automaton has 30102 states and 45461 transitions. Word has length 89 [2020-10-28 18:39:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:39:43,616 INFO L481 AbstractCegarLoop]: Abstraction has 30102 states and 45461 transitions. [2020-10-28 18:39:43,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:39:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30102 states and 45461 transitions. [2020-10-28 18:39:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 18:39:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:39:43,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:39:43,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:39:43,620 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:39:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:39:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash -94374424, now seen corresponding path program 1 times [2020-10-28 18:39:43,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:39:43,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41666978] [2020-10-28 18:39:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:39:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:48,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 18:39:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:48,972 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:39:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:39:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:39:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:39:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:39:49,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41666978] [2020-10-28 18:39:49,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:39:49,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:39:49,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26919717] [2020-10-28 18:39:49,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:39:49,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:39:49,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:39:49,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:39:49,010 INFO L87 Difference]: Start difference. First operand 30102 states and 45461 transitions. Second operand 5 states. [2020-10-28 18:39:49,329 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:39:50,159 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:39:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:39:56,321 INFO L93 Difference]: Finished difference Result 80304 states and 120813 transitions. [2020-10-28 18:39:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:39:56,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-28 18:39:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:39:56,381 INFO L225 Difference]: With dead ends: 80304 [2020-10-28 18:39:56,382 INFO L226 Difference]: Without dead ends: 50749 [2020-10-28 18:39:56,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:39:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2020-10-28 18:40:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 50746. [2020-10-28 18:40:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50746 states. [2020-10-28 18:40:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 75569 transitions. [2020-10-28 18:40:02,483 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 75569 transitions. Word has length 89 [2020-10-28 18:40:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:02,484 INFO L481 AbstractCegarLoop]: Abstraction has 50746 states and 75569 transitions. [2020-10-28 18:40:02,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:40:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 75569 transitions. [2020-10-28 18:40:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 18:40:02,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:02,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:02,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:40:02,487 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1747426112, now seen corresponding path program 1 times [2020-10-28 18:40:02,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:02,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053916015] [2020-10-28 18:40:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:07,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:40:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:07,827 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:40:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:07,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:07,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053916015] [2020-10-28 18:40:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:40:07,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877827471] [2020-10-28 18:40:07,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:40:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:40:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:40:07,861 INFO L87 Difference]: Start difference. First operand 50746 states and 75569 transitions. Second operand 8 states. [2020-10-28 18:40:08,208 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 18:40:09,139 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:40:09,430 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:40:09,835 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:40:10,133 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:40:10,444 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:40:10,744 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:40:11,036 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:40:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:25,838 INFO L93 Difference]: Finished difference Result 137532 states and 204806 transitions. [2020-10-28 18:40:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:40:25,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 18:40:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:26,038 INFO L225 Difference]: With dead ends: 137532 [2020-10-28 18:40:26,039 INFO L226 Difference]: Without dead ends: 119705 [2020-10-28 18:40:26,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:40:26,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119705 states. [2020-10-28 18:40:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119705 to 63803. [2020-10-28 18:40:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63803 states. [2020-10-28 18:40:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63803 states to 63803 states and 95056 transitions. [2020-10-28 18:40:34,724 INFO L78 Accepts]: Start accepts. Automaton has 63803 states and 95056 transitions. Word has length 89 [2020-10-28 18:40:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:34,724 INFO L481 AbstractCegarLoop]: Abstraction has 63803 states and 95056 transitions. [2020-10-28 18:40:34,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:40:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 63803 states and 95056 transitions. [2020-10-28 18:40:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 18:40:34,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:34,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:34,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:40:34,727 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:34,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1363642667, now seen corresponding path program 1 times [2020-10-28 18:40:34,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:34,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584485030] [2020-10-28 18:40:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:39,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:40:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:40:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:40,091 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:40:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584485030] [2020-10-28 18:40:40,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:40,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:40:40,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400890768] [2020-10-28 18:40:40,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:40:40,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:40:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:40:40,126 INFO L87 Difference]: Start difference. First operand 63803 states and 95056 transitions. Second operand 8 states. [2020-10-28 18:40:40,480 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 18:40:41,494 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:40:41,996 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:40:42,293 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 18:40:42,605 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:40:42,891 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:40:43,191 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:40:43,504 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:41:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:01,440 INFO L93 Difference]: Finished difference Result 153682 states and 228788 transitions. [2020-10-28 18:41:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:41:01,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 18:41:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:01,654 INFO L225 Difference]: With dead ends: 153682 [2020-10-28 18:41:01,654 INFO L226 Difference]: Without dead ends: 135855 [2020-10-28 18:41:01,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:41:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135855 states. [2020-10-28 18:41:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135855 to 76865. [2020-10-28 18:41:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76865 states. [2020-10-28 18:41:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76865 states to 76865 states and 114551 transitions. [2020-10-28 18:41:12,966 INFO L78 Accepts]: Start accepts. Automaton has 76865 states and 114551 transitions. Word has length 89 [2020-10-28 18:41:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:12,967 INFO L481 AbstractCegarLoop]: Abstraction has 76865 states and 114551 transitions. [2020-10-28 18:41:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:41:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 76865 states and 114551 transitions. [2020-10-28 18:41:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 18:41:12,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:12,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:41:12,969 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash 652120377, now seen corresponding path program 1 times [2020-10-28 18:41:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:12,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772820960] [2020-10-28 18:41:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking...