/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.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:44:59,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:44:59,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:45:00,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:45:00,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:45:00,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:45:00,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:45:00,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:45:00,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:45:00,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:45:00,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:45:00,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:45:00,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:45:00,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:45:00,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:45:00,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:45:00,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:45:00,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:45:00,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:45:00,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:45:00,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:45:00,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:45:00,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:45:00,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:45:00,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:45:00,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:45:00,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:45:00,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:45:00,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:45:00,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:45:00,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:45:00,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:45:00,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:45:00,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:45:00,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:45:00,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:45:00,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:45:00,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:45:00,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:45:00,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:45:00,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:45:00,105 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 18:45:00,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:45:00,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:45:00,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:45:00,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:45:00,134 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:45:00,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:45:00,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:45:00,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:45:00,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:45:00,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:45:00,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:45:00,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:45:00,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:45:00,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:45:00,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:45:00,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:45:00,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:45:00,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:45:00,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:45:00,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:45:00,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:45:00,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:45:00,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:45:00,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:45:00,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:45:00,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:45:00,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:45:00,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:45:00,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:45:00,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:45:00,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-28 18:45:00,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc752aa/b932b43305f34636b8ef55fd1ba6c22c/FLAG00e02a5d3 [2020-10-28 18:45:01,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:45:01,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-28 18:45:01,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc752aa/b932b43305f34636b8ef55fd1ba6c22c/FLAG00e02a5d3 [2020-10-28 18:45:01,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc752aa/b932b43305f34636b8ef55fd1ba6c22c [2020-10-28 18:45:01,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:45:01,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:45:01,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:45:01,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:45:01,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:45:01,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:45:01" (1/1) ... [2020-10-28 18:45:01,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256c48e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:01, skipping insertion in model container [2020-10-28 18:45:01,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:45:01" (1/1) ... [2020-10-28 18:45:01,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:45:01,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:45:02,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:45:02,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:45:02,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:45:02,398 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:45:02,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02 WrapperNode [2020-10-28 18:45:02,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:45:02,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:45:02,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:45:02,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:45:02,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (1/1) ... [2020-10-28 18:45:02,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:45:02,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:45:02,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:45:02,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:45:02,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (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 18:45:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:45:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:45:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:45:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:45:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:45:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:45:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:45:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:45:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:45:02,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:45:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:45:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:45:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:45:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:45:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:45:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:45:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:45:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:45:02,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:45:03,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:45:03,671 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:45:03,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:45:03 BoogieIcfgContainer [2020-10-28 18:45:03,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:45:03,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:45:03,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:45:03,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:45:03,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:45:01" (1/3) ... [2020-10-28 18:45:03,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274a50ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:45:03, skipping insertion in model container [2020-10-28 18:45:03,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:02" (2/3) ... [2020-10-28 18:45:03,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274a50ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:45:03, skipping insertion in model container [2020-10-28 18:45:03,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:45:03" (3/3) ... [2020-10-28 18:45:03,683 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-28 18:45:03,696 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:45:03,703 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:45:03,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:45:03,752 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:45:03,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:45:03,753 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:45:03,753 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:45:03,753 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:45:03,753 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:45:03,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:45:03,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:45:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-28 18:45:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 18:45:03,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:03,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:03,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:03,803 INFO L82 PathProgramCache]: Analyzing trace with hash 799248134, now seen corresponding path program 1 times [2020-10-28 18:45:03,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:03,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693007139] [2020-10-28 18:45:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:07,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:09,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 18:45:09,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:45:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:45:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:09,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 18:45:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:45:09,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:45:09,692 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:09,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:09,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 18:45:09,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:09,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:45:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:45:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:09,864 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 18:45:09,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693007139] [2020-10-28 18:45:09,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:09,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:45:09,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038485315] [2020-10-28 18:45:09,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:45:09,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:09,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:45:09,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:45:09,907 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 4 states. [2020-10-28 18:45:10,400 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:45:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:12,142 INFO L93 Difference]: Finished difference Result 405 states and 670 transitions. [2020-10-28 18:45:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:45:12,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-28 18:45:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:12,175 INFO L225 Difference]: With dead ends: 405 [2020-10-28 18:45:12,175 INFO L226 Difference]: Without dead ends: 308 [2020-10-28 18:45:12,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:45:12,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-28 18:45:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 305. [2020-10-28 18:45:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-28 18:45:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 435 transitions. [2020-10-28 18:45:12,268 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 435 transitions. Word has length 113 [2020-10-28 18:45:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:12,269 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 435 transitions. [2020-10-28 18:45:12,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:45:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 435 transitions. [2020-10-28 18:45:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:45:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:12,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:12,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:45:12,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -920224361, now seen corresponding path program 1 times [2020-10-28 18:45:12,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:12,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49004451] [2020-10-28 18:45:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:17,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 18:45:17,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:45:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:45:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:45:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 18:45:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:45:17,830 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:17,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 18:45:17,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:17,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:45:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:45:18,012 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 18:45:18,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49004451] [2020-10-28 18:45:18,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:18,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:45:18,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551914013] [2020-10-28 18:45:18,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:45:18,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:18,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:45:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:45:18,032 INFO L87 Difference]: Start difference. First operand 305 states and 435 transitions. Second operand 6 states. [2020-10-28 18:45:18,512 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 18:45:19,609 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 18:45:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:20,054 INFO L93 Difference]: Finished difference Result 728 states and 1091 transitions. [2020-10-28 18:45:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:45:20,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-28 18:45:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:20,060 INFO L225 Difference]: With dead ends: 728 [2020-10-28 18:45:20,060 INFO L226 Difference]: Without dead ends: 492 [2020-10-28 18:45:20,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:45:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-28 18:45:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 489. [2020-10-28 18:45:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-28 18:45:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 723 transitions. [2020-10-28 18:45:20,123 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 723 transitions. Word has length 115 [2020-10-28 18:45:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:20,123 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 723 transitions. [2020-10-28 18:45:20,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:45:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 723 transitions. [2020-10-28 18:45:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 18:45:20,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:20,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:20,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:45:20,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1365247666, now seen corresponding path program 1 times [2020-10-28 18:45:20,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:20,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147776917] [2020-10-28 18:45:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 18:45:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:45:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:45:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:25,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:45:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:45:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:25,658 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:25,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:25,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:25,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:25,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 18:45:25,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:25,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:45:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:25,742 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 18:45:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147776917] [2020-10-28 18:45:25,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:25,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:45:25,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255847655] [2020-10-28 18:45:25,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:45:25,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:25,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:45:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:45:25,745 INFO L87 Difference]: Start difference. First operand 489 states and 723 transitions. Second operand 6 states. [2020-10-28 18:45:26,199 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 18:45:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:27,222 INFO L93 Difference]: Finished difference Result 913 states and 1379 transitions. [2020-10-28 18:45:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:45:27,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-28 18:45:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:27,226 INFO L225 Difference]: With dead ends: 913 [2020-10-28 18:45:27,227 INFO L226 Difference]: Without dead ends: 489 [2020-10-28 18:45:27,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:45:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-28 18:45:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2020-10-28 18:45:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-28 18:45:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 718 transitions. [2020-10-28 18:45:27,271 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 718 transitions. Word has length 116 [2020-10-28 18:45:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:27,271 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 718 transitions. [2020-10-28 18:45:27,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:45:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 718 transitions. [2020-10-28 18:45:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 18:45:27,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:27,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:27,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:45:27,274 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:27,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1329339526, now seen corresponding path program 1 times [2020-10-28 18:45:27,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:27,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387263502] [2020-10-28 18:45:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:32,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 18:45:32,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:45:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:45:32,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:32,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:45:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 18:45:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:32,834 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:32,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:32,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:32,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:32,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 18:45:32,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:32,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:32,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:32,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:32,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:45:32,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:32,940 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 18:45:32,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387263502] [2020-10-28 18:45:32,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:32,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:45:32,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736722665] [2020-10-28 18:45:32,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:45:32,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:45:32,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:45:32,945 INFO L87 Difference]: Start difference. First operand 489 states and 718 transitions. Second operand 6 states. [2020-10-28 18:45:33,384 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:45:34,402 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:45:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:34,905 INFO L93 Difference]: Finished difference Result 1198 states and 1820 transitions. [2020-10-28 18:45:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:45:34,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-28 18:45:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:34,913 INFO L225 Difference]: With dead ends: 1198 [2020-10-28 18:45:34,913 INFO L226 Difference]: Without dead ends: 794 [2020-10-28 18:45:34,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:45:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-10-28 18:45:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 791. [2020-10-28 18:45:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-28 18:45:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1185 transitions. [2020-10-28 18:45:34,983 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1185 transitions. Word has length 117 [2020-10-28 18:45:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:34,984 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 1185 transitions. [2020-10-28 18:45:34,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:45:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1185 transitions. [2020-10-28 18:45:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 18:45:34,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:34,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:34,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:45:34,989 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1444846051, now seen corresponding path program 1 times [2020-10-28 18:45:34,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:34,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744129859] [2020-10-28 18:45:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:40,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:40,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 18:45:40,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:45:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:45:40,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:40,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:45:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:40,607 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:40,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:40,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:45:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:40,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:45:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:40,674 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 18:45:40,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744129859] [2020-10-28 18:45:40,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:40,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:45:40,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251794370] [2020-10-28 18:45:40,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:45:40,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:40,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:45:40,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:45:40,677 INFO L87 Difference]: Start difference. First operand 791 states and 1185 transitions. Second operand 7 states. [2020-10-28 18:45:41,101 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 18:45:42,312 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 18:45:42,712 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 18:45:43,111 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:45:43,514 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:45:44,728 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:45:45,133 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 18:45:45,776 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:45:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:45,799 INFO L93 Difference]: Finished difference Result 6034 states and 9311 transitions. [2020-10-28 18:45:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:45:45,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 18:45:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:45,827 INFO L225 Difference]: With dead ends: 6034 [2020-10-28 18:45:45,827 INFO L226 Difference]: Without dead ends: 5324 [2020-10-28 18:45:45,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 18:45:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5324 states. [2020-10-28 18:45:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5324 to 2188. [2020-10-28 18:45:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2020-10-28 18:45:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3336 transitions. [2020-10-28 18:45:46,016 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3336 transitions. Word has length 118 [2020-10-28 18:45:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:46,017 INFO L481 AbstractCegarLoop]: Abstraction has 2188 states and 3336 transitions. [2020-10-28 18:45:46,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:45:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3336 transitions. [2020-10-28 18:45:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:45:46,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:46,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:46,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:45:46,020 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash -432675787, now seen corresponding path program 1 times [2020-10-28 18:45:46,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:46,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285673810] [2020-10-28 18:45:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:45:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:45:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 18:45:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:51,644 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:45:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:51,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:51,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:45:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:51,724 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 18:45:51,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285673810] [2020-10-28 18:45:51,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:51,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:45:51,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448058139] [2020-10-28 18:45:51,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:45:51,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:45:51,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:45:51,729 INFO L87 Difference]: Start difference. First operand 2188 states and 3336 transitions. Second operand 8 states. [2020-10-28 18:45:52,194 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:45:53,552 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 18:45:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:54,392 INFO L93 Difference]: Finished difference Result 5032 states and 7738 transitions. [2020-10-28 18:45:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:45:54,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-10-28 18:45:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:54,408 INFO L225 Difference]: With dead ends: 5032 [2020-10-28 18:45:54,409 INFO L226 Difference]: Without dead ends: 3059 [2020-10-28 18:45:54,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:45:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2020-10-28 18:45:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2146. [2020-10-28 18:45:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-28 18:45:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3268 transitions. [2020-10-28 18:45:54,664 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3268 transitions. Word has length 119 [2020-10-28 18:45:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:54,665 INFO L481 AbstractCegarLoop]: Abstraction has 2146 states and 3268 transitions. [2020-10-28 18:45:54,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:45:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3268 transitions. [2020-10-28 18:45:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:45:54,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:54,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:54,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:45:54,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1559597858, now seen corresponding path program 1 times [2020-10-28 18:45:54,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:54,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740833515] [2020-10-28 18:45:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:59,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:59,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:45:59,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:45:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 18:45:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:00,136 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:46:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:46:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:00,184 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 18:46:00,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740833515] [2020-10-28 18:46:00,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:00,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:46:00,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036739245] [2020-10-28 18:46:00,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:00,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:00,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:00,187 INFO L87 Difference]: Start difference. First operand 2146 states and 3268 transitions. Second operand 6 states. [2020-10-28 18:46:00,625 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:46:02,158 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:46:04,636 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:46:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:04,867 INFO L93 Difference]: Finished difference Result 10767 states and 16593 transitions. [2020-10-28 18:46:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:46:04,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-28 18:46:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:04,918 INFO L225 Difference]: With dead ends: 10767 [2020-10-28 18:46:04,918 INFO L226 Difference]: Without dead ends: 9512 [2020-10-28 18:46:04,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:46:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2020-10-28 18:46:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 5892. [2020-10-28 18:46:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2020-10-28 18:46:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 9041 transitions. [2020-10-28 18:46:05,652 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 9041 transitions. Word has length 119 [2020-10-28 18:46:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:05,652 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 9041 transitions. [2020-10-28 18:46:05,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 9041 transitions. [2020-10-28 18:46:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:46:05,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:05,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:05,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:46:05,656 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash -909350479, now seen corresponding path program 1 times [2020-10-28 18:46:05,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:05,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35662679] [2020-10-28 18:46:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:46:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:46:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:46:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:11,126 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:11,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:11,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:46:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:46:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:11,194 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 18:46:11,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35662679] [2020-10-28 18:46:11,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:11,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:46:11,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881561725] [2020-10-28 18:46:11,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:11,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:11,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:11,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:11,197 INFO L87 Difference]: Start difference. First operand 5892 states and 9041 transitions. Second operand 6 states. [2020-10-28 18:46:11,655 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:46:12,627 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:46:13,051 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:46:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:14,373 INFO L93 Difference]: Finished difference Result 16421 states and 25285 transitions. [2020-10-28 18:46:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:46:14,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-28 18:46:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:14,417 INFO L225 Difference]: With dead ends: 16421 [2020-10-28 18:46:14,417 INFO L226 Difference]: Without dead ends: 11002 [2020-10-28 18:46:14,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:46:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2020-10-28 18:46:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 8748. [2020-10-28 18:46:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8748 states. [2020-10-28 18:46:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 13471 transitions. [2020-10-28 18:46:15,377 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 13471 transitions. Word has length 119 [2020-10-28 18:46:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:15,377 INFO L481 AbstractCegarLoop]: Abstraction has 8748 states and 13471 transitions. [2020-10-28 18:46:15,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 13471 transitions. [2020-10-28 18:46:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 18:46:15,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:15,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:15,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:46:15,382 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:15,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1637772636, now seen corresponding path program 1 times [2020-10-28 18:46:15,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:15,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445553134] [2020-10-28 18:46:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:20,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:46:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:46:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 18:46:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:20,906 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:20,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:20,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:46:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:20,973 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 18:46:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445553134] [2020-10-28 18:46:20,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:20,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:46:20,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819543394] [2020-10-28 18:46:20,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:20,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:20,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:20,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:20,975 INFO L87 Difference]: Start difference. First operand 8748 states and 13471 transitions. Second operand 6 states. [2020-10-28 18:46:21,425 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:46:22,554 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:46:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:24,127 INFO L93 Difference]: Finished difference Result 25622 states and 39502 transitions. [2020-10-28 18:46:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:46:24,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-28 18:46:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:24,167 INFO L225 Difference]: With dead ends: 25622 [2020-10-28 18:46:24,167 INFO L226 Difference]: Without dead ends: 16967 [2020-10-28 18:46:24,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:46:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16967 states. [2020-10-28 18:46:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16967 to 16964. [2020-10-28 18:46:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16964 states. [2020-10-28 18:46:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16964 states to 16964 states and 26017 transitions. [2020-10-28 18:46:25,661 INFO L78 Accepts]: Start accepts. Automaton has 16964 states and 26017 transitions. Word has length 120 [2020-10-28 18:46:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:25,662 INFO L481 AbstractCegarLoop]: Abstraction has 16964 states and 26017 transitions. [2020-10-28 18:46:25,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16964 states and 26017 transitions. [2020-10-28 18:46:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:46:25,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:25,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:25,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:46:25,667 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:25,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1830342401, now seen corresponding path program 1 times [2020-10-28 18:46:25,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:25,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650826401] [2020-10-28 18:46:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:46:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:46:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:46:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:31,126 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:31,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:31,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:46:31,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:31,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:46:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:46:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:31,203 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 18:46:31,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650826401] [2020-10-28 18:46:31,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:31,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:46:31,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070494234] [2020-10-28 18:46:31,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:31,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:31,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:31,207 INFO L87 Difference]: Start difference. First operand 16964 states and 26017 transitions. Second operand 6 states. [2020-10-28 18:46:31,659 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:46:32,943 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:46:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:35,883 INFO L93 Difference]: Finished difference Result 50270 states and 77096 transitions. [2020-10-28 18:46:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:46:35,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-28 18:46:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:35,965 INFO L225 Difference]: With dead ends: 50270 [2020-10-28 18:46:35,966 INFO L226 Difference]: Without dead ends: 33391 [2020-10-28 18:46:36,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:46:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33391 states. [2020-10-28 18:46:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33391 to 33388. [2020-10-28 18:46:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33388 states. [2020-10-28 18:46:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33388 states to 33388 states and 50947 transitions. [2020-10-28 18:46:39,148 INFO L78 Accepts]: Start accepts. Automaton has 33388 states and 50947 transitions. Word has length 121 [2020-10-28 18:46:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:39,148 INFO L481 AbstractCegarLoop]: Abstraction has 33388 states and 50947 transitions. [2020-10-28 18:46:39,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 33388 states and 50947 transitions. [2020-10-28 18:46:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:46:39,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:39,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:39,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:46:39,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:39,158 INFO L82 PathProgramCache]: Analyzing trace with hash -296302707, now seen corresponding path program 1 times [2020-10-28 18:46:39,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:39,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681587655] [2020-10-28 18:46:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:44,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:46:44,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:46:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:44,636 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:46:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:44,711 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 18:46:44,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681587655] [2020-10-28 18:46:44,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:44,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:46:44,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664889967] [2020-10-28 18:46:44,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:44,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:44,714 INFO L87 Difference]: Start difference. First operand 33388 states and 50947 transitions. Second operand 6 states. [2020-10-28 18:46:45,161 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:46:46,546 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:46:49,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:49,183 INFO L93 Difference]: Finished difference Result 47730 states and 72871 transitions. [2020-10-28 18:46:49,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:46:49,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:46:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:49,228 INFO L225 Difference]: With dead ends: 47730 [2020-10-28 18:46:49,228 INFO L226 Difference]: Without dead ends: 25953 [2020-10-28 18:46:49,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:46:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25953 states. [2020-10-28 18:46:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25953 to 15134. [2020-10-28 18:46:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15134 states. [2020-10-28 18:46:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15134 states to 15134 states and 22998 transitions. [2020-10-28 18:46:51,005 INFO L78 Accepts]: Start accepts. Automaton has 15134 states and 22998 transitions. Word has length 122 [2020-10-28 18:46:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:51,006 INFO L481 AbstractCegarLoop]: Abstraction has 15134 states and 22998 transitions. [2020-10-28 18:46:51,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15134 states and 22998 transitions. [2020-10-28 18:46:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:46:51,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:51,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:51,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:46:51,013 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:51,013 INFO L82 PathProgramCache]: Analyzing trace with hash -967461928, now seen corresponding path program 1 times [2020-10-28 18:46:51,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:51,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276455488] [2020-10-28 18:46:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:46:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:46:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 18:46:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:56,577 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:46:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:46:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:56,620 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 18:46:56,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276455488] [2020-10-28 18:46:56,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:56,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:46:56,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854833874] [2020-10-28 18:46:56,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:46:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:46:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:46:56,622 INFO L87 Difference]: Start difference. First operand 15134 states and 22998 transitions. Second operand 6 states. [2020-10-28 18:46:57,076 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:46:58,228 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:46:58,689 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:47:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:02,128 INFO L93 Difference]: Finished difference Result 46565 states and 70684 transitions. [2020-10-28 18:47:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:47:02,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:47:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:02,172 INFO L225 Difference]: With dead ends: 46565 [2020-10-28 18:47:02,172 INFO L226 Difference]: Without dead ends: 32226 [2020-10-28 18:47:02,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:47:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32226 states. [2020-10-28 18:47:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32226 to 24988. [2020-10-28 18:47:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24988 states. [2020-10-28 18:47:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24988 states to 24988 states and 38038 transitions. [2020-10-28 18:47:05,123 INFO L78 Accepts]: Start accepts. Automaton has 24988 states and 38038 transitions. Word has length 122 [2020-10-28 18:47:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:05,123 INFO L481 AbstractCegarLoop]: Abstraction has 24988 states and 38038 transitions. [2020-10-28 18:47:05,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 24988 states and 38038 transitions. [2020-10-28 18:47:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:47:05,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:05,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:05,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:47:05,131 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:05,131 INFO L82 PathProgramCache]: Analyzing trace with hash -465605675, now seen corresponding path program 1 times [2020-10-28 18:47:05,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:05,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791945537] [2020-10-28 18:47:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:10,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:47:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 18:47:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:10,305 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-10-28 18:47:10,688 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:47:10,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:10,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:10,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:47:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:10,768 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 18:47:10,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791945537] [2020-10-28 18:47:10,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:10,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:47:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040510856] [2020-10-28 18:47:10,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:10,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:10,771 INFO L87 Difference]: Start difference. First operand 24988 states and 38038 transitions. Second operand 6 states. [2020-10-28 18:47:11,203 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:47:12,433 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:47:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:15,184 INFO L93 Difference]: Finished difference Result 49097 states and 74753 transitions. [2020-10-28 18:47:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:47:15,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:47:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:15,211 INFO L225 Difference]: With dead ends: 49097 [2020-10-28 18:47:15,211 INFO L226 Difference]: Without dead ends: 24610 [2020-10-28 18:47:15,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:47:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24610 states. [2020-10-28 18:47:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24610 to 24607. [2020-10-28 18:47:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24607 states. [2020-10-28 18:47:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24607 states to 24607 states and 37435 transitions. [2020-10-28 18:47:17,960 INFO L78 Accepts]: Start accepts. Automaton has 24607 states and 37435 transitions. Word has length 122 [2020-10-28 18:47:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:17,960 INFO L481 AbstractCegarLoop]: Abstraction has 24607 states and 37435 transitions. [2020-10-28 18:47:17,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 24607 states and 37435 transitions. [2020-10-28 18:47:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 18:47:17,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:17,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:17,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:47:17,970 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:17,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1725453265, now seen corresponding path program 1 times [2020-10-28 18:47:17,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:17,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414220307] [2020-10-28 18:47:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:47:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 18:47:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:23,446 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:47:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:23,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:23,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:47:23,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:23,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:23,490 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 18:47:23,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414220307] [2020-10-28 18:47:23,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:23,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:47:23,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354166934] [2020-10-28 18:47:23,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:23,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:23,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:23,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:23,492 INFO L87 Difference]: Start difference. First operand 24607 states and 37435 transitions. Second operand 6 states. [2020-10-28 18:47:23,952 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:47:25,118 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:47:25,601 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:47:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:29,991 INFO L93 Difference]: Finished difference Result 62276 states and 94505 transitions. [2020-10-28 18:47:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:47:29,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-28 18:47:29,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:30,030 INFO L225 Difference]: With dead ends: 62276 [2020-10-28 18:47:30,030 INFO L226 Difference]: Without dead ends: 38209 [2020-10-28 18:47:30,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:47:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38209 states. [2020-10-28 18:47:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38209 to 29499. [2020-10-28 18:47:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29499 states. [2020-10-28 18:47:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29499 states to 29499 states and 44899 transitions. [2020-10-28 18:47:33,316 INFO L78 Accepts]: Start accepts. Automaton has 29499 states and 44899 transitions. Word has length 123 [2020-10-28 18:47:33,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:33,317 INFO L481 AbstractCegarLoop]: Abstraction has 29499 states and 44899 transitions. [2020-10-28 18:47:33,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:33,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29499 states and 44899 transitions. [2020-10-28 18:47:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 18:47:33,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:33,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:33,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:47:33,322 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:33,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1109581278, now seen corresponding path program 1 times [2020-10-28 18:47:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:33,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747691412] [2020-10-28 18:47:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 18:47:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:38,834 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:47:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:38,890 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 18:47:38,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747691412] [2020-10-28 18:47:38,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:38,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:47:38,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169761760] [2020-10-28 18:47:38,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:38,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:38,893 INFO L87 Difference]: Start difference. First operand 29499 states and 44899 transitions. Second operand 6 states. [2020-10-28 18:47:39,333 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:47:40,553 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:47:41,015 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:47:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:46,317 INFO L93 Difference]: Finished difference Result 72876 states and 110545 transitions. [2020-10-28 18:47:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:47:46,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-28 18:47:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:46,362 INFO L225 Difference]: With dead ends: 72876 [2020-10-28 18:47:46,363 INFO L226 Difference]: Without dead ends: 43945 [2020-10-28 18:47:46,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:47:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43945 states. [2020-10-28 18:47:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43945 to 34371. [2020-10-28 18:47:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34371 states. [2020-10-28 18:47:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34371 states to 34371 states and 52331 transitions. [2020-10-28 18:47:50,377 INFO L78 Accepts]: Start accepts. Automaton has 34371 states and 52331 transitions. Word has length 123 [2020-10-28 18:47:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:50,377 INFO L481 AbstractCegarLoop]: Abstraction has 34371 states and 52331 transitions. [2020-10-28 18:47:50,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34371 states and 52331 transitions. [2020-10-28 18:47:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 18:47:50,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:50,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:50,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:47:50,383 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1565159896, now seen corresponding path program 1 times [2020-10-28 18:47:50,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:50,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840274224] [2020-10-28 18:47:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 18:47:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 18:47:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:55,862 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:47:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:55,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:55,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:47:55,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:55,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:55,931 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 18:47:55,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840274224] [2020-10-28 18:47:55,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:55,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:47:55,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593587043] [2020-10-28 18:47:55,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:55,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:55,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:55,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:55,933 INFO L87 Difference]: Start difference. First operand 34371 states and 52331 transitions. Second operand 6 states. [2020-10-28 18:47:56,395 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 18:47:57,676 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:47:58,151 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 18:48:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:03,671 INFO L93 Difference]: Finished difference Result 82796 states and 125585 transitions. [2020-10-28 18:48:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:48:03,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-28 18:48:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:03,725 INFO L225 Difference]: With dead ends: 82796 [2020-10-28 18:48:03,725 INFO L226 Difference]: Without dead ends: 49001 [2020-10-28 18:48:03,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:48:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49001 states. [2020-10-28 18:48:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49001 to 39235. [2020-10-28 18:48:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39235 states. [2020-10-28 18:48:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39235 states to 39235 states and 59755 transitions. [2020-10-28 18:48:08,465 INFO L78 Accepts]: Start accepts. Automaton has 39235 states and 59755 transitions. Word has length 123 [2020-10-28 18:48:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:08,465 INFO L481 AbstractCegarLoop]: Abstraction has 39235 states and 59755 transitions. [2020-10-28 18:48:08,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 39235 states and 59755 transitions. [2020-10-28 18:48:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 18:48:08,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:08,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:08,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:48:08,470 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:08,470 INFO L82 PathProgramCache]: Analyzing trace with hash -520119041, now seen corresponding path program 1 times [2020-10-28 18:48:08,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:08,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321569164] [2020-10-28 18:48:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:11,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 18:48:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:48:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:13,938 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:48:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:13,975 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 18:48:13,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321569164] [2020-10-28 18:48:13,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:13,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:13,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230961660] [2020-10-28 18:48:13,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:13,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:13,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:13,977 INFO L87 Difference]: Start difference. First operand 39235 states and 59755 transitions. Second operand 4 states. [2020-10-28 18:48:14,395 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:48:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:20,280 INFO L93 Difference]: Finished difference Result 82761 states and 126127 transitions. [2020-10-28 18:48:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:20,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-28 18:48:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:20,326 INFO L225 Difference]: With dead ends: 82761 [2020-10-28 18:48:20,327 INFO L226 Difference]: Without dead ends: 44102 [2020-10-28 18:48:20,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44102 states. [2020-10-28 18:48:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44102 to 44099. [2020-10-28 18:48:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44099 states. [2020-10-28 18:48:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44099 states to 44099 states and 67051 transitions. [2020-10-28 18:48:25,562 INFO L78 Accepts]: Start accepts. Automaton has 44099 states and 67051 transitions. Word has length 123 [2020-10-28 18:48:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:25,563 INFO L481 AbstractCegarLoop]: Abstraction has 44099 states and 67051 transitions. [2020-10-28 18:48:25,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 44099 states and 67051 transitions. [2020-10-28 18:48:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 18:48:25,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:25,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:25,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:48:25,567 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash 592066014, now seen corresponding path program 1 times [2020-10-28 18:48:25,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198327301] [2020-10-28 18:48:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:25,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:48:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:48:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 18:48:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:31,049 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:48:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:31,108 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 18:48:31,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198327301] [2020-10-28 18:48:31,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:31,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:31,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40021704] [2020-10-28 18:48:31,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:48:31,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:31,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:48:31,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:31,110 INFO L87 Difference]: Start difference. First operand 44099 states and 67051 transitions. Second operand 5 states. [2020-10-28 18:48:31,523 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 18:48:32,730 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210