/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=DEEPEST --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-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:22:01,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:22:01,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:22:01,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:22:01,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:22:01,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:22:01,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:22:01,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:22:01,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:22:01,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:22:01,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:22:01,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:22:01,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:22:01,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:22:01,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:22:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:22:01,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:22:01,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:22:01,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:22:01,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:22:01,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:22:01,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:22:01,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:22:01,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:22:01,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:22:01,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:22:01,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:22:01,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:22:01,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:22:01,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:22:01,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:22:01,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:22:01,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:22:01,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:22:01,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:22:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:22:01,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:22:01,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:22:01,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:22:01,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:22:01,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:22:01,631 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 00:22:01,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:22:01,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:22:01,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:22:01,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:22:01,660 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:22:01,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:22:01,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:22:01,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:22:01,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:22:01,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:22:01,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:22:01,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:22:01,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:22:01,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:22:01,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:22:01,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:22:01,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:22:01,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:22:01,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:22:01,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:22:01,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:22:01,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:22:01,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:22:01,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:22:01,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:22:02,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:22:02,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:22:02,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:22:02,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:22:02,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:22:02,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:22:02,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8750a4c82/42a8b53c5eae4f408f31307fe6137b48/FLAG417b53f38 [2020-10-28 00:22:02,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:22:02,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:22:02,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8750a4c82/42a8b53c5eae4f408f31307fe6137b48/FLAG417b53f38 [2020-10-28 00:22:03,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8750a4c82/42a8b53c5eae4f408f31307fe6137b48 [2020-10-28 00:22:03,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:22:03,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:22:03,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:22:03,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:22:03,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:22:03,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9780bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03, skipping insertion in model container [2020-10-28 00:22:03,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:22:03,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:22:03,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:22:03,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:22:03,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:22:03,706 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:22:03,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03 WrapperNode [2020-10-28 00:22:03,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:22:03,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:22:03,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:22:03,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:22:03,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (1/1) ... [2020-10-28 00:22:03,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:22:03,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:22:03,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:22:03,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:22:03,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (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 00:22:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:22:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:22:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:22:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:22:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:22:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:22:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:22:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:22:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:22:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:22:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:22:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 00:22:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:22:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:22:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:22:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:22:05,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:22:05,084 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:22:05,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:05 BoogieIcfgContainer [2020-10-28 00:22:05,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:22:05,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:22:05,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:22:05,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:22:05,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:22:03" (1/3) ... [2020-10-28 00:22:05,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781c0929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:05, skipping insertion in model container [2020-10-28 00:22:05,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:03" (2/3) ... [2020-10-28 00:22:05,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781c0929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:05, skipping insertion in model container [2020-10-28 00:22:05,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:05" (3/3) ... [2020-10-28 00:22:05,097 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:22:05,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:22:05,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:22:05,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:22:05,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:22:05,164 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:22:05,165 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:22:05,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:22:05,165 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:22:05,165 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:22:05,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:22:05,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:22:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states. [2020-10-28 00:22:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:22:05,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:05,208 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] [2020-10-28 00:22:05,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash 903645214, now seen corresponding path program 1 times [2020-10-28 00:22:05,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:05,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184308801] [2020-10-28 00:22:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:10,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:22:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 00:22:10,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 00:22:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 00:22:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:22:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:22:11,125 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:11,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:11,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:22:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:22:11,225 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 00:22:11,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184308801] [2020-10-28 00:22:11,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:11,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:11,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156025721] [2020-10-28 00:22:11,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:11,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:11,252 INFO L87 Difference]: Start difference. First operand 267 states. Second operand 4 states. [2020-10-28 00:22:11,574 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:22:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:12,943 INFO L93 Difference]: Finished difference Result 534 states and 877 transitions. [2020-10-28 00:22:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:12,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 00:22:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:12,961 INFO L225 Difference]: With dead ends: 534 [2020-10-28 00:22:12,961 INFO L226 Difference]: Without dead ends: 401 [2020-10-28 00:22:12,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-28 00:22:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 398. [2020-10-28 00:22:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-28 00:22:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 596 transitions. [2020-10-28 00:22:13,053 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 596 transitions. Word has length 101 [2020-10-28 00:22:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:13,054 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 596 transitions. [2020-10-28 00:22:13,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 596 transitions. [2020-10-28 00:22:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 00:22:13,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:13,059 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] [2020-10-28 00:22:13,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:22:13,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 209176018, now seen corresponding path program 1 times [2020-10-28 00:22:13,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:13,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324707795] [2020-10-28 00:22:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:14,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:14,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 00:22:14,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:22:14,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-28 00:22:14,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:14,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:22:14,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 00:22:14,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:22:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:22:15,044 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:15,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:15,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:15,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:22:15,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:15,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:22:15,110 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 00:22:15,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324707795] [2020-10-28 00:22:15,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:15,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:22:15,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987456260] [2020-10-28 00:22:15,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:22:15,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:15,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:22:15,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:15,125 INFO L87 Difference]: Start difference. First operand 398 states and 596 transitions. Second operand 5 states. [2020-10-28 00:22:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:16,313 INFO L93 Difference]: Finished difference Result 612 states and 935 transitions. [2020-10-28 00:22:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:22:16,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-28 00:22:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:16,323 INFO L225 Difference]: With dead ends: 612 [2020-10-28 00:22:16,323 INFO L226 Difference]: Without dead ends: 609 [2020-10-28 00:22:16,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-10-28 00:22:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 400. [2020-10-28 00:22:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-28 00:22:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 598 transitions. [2020-10-28 00:22:16,391 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 598 transitions. Word has length 102 [2020-10-28 00:22:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:16,391 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 598 transitions. [2020-10-28 00:22:16,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:22:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 598 transitions. [2020-10-28 00:22:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 00:22:16,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:16,399 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] [2020-10-28 00:22:16,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:22:16,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -24821840, now seen corresponding path program 1 times [2020-10-28 00:22:16,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:16,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901458085] [2020-10-28 00:22:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:17,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 00:22:17,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:22:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-28 00:22:17,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:22:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:22:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 00:22:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:18,256 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:18,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:18,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:22:18,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:18,381 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 00:22:18,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901458085] [2020-10-28 00:22:18,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:18,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:22:18,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604616098] [2020-10-28 00:22:18,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:22:18,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:18,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:22:18,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:22:18,384 INFO L87 Difference]: Start difference. First operand 400 states and 598 transitions. Second operand 9 states. [2020-10-28 00:22:20,184 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:22:20,486 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 00:22:20,781 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:22:21,082 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:22:21,341 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:22:21,643 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:22:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:23,073 INFO L93 Difference]: Finished difference Result 1983 states and 3074 transitions. [2020-10-28 00:22:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 00:22:23,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 00:22:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:23,085 INFO L225 Difference]: With dead ends: 1983 [2020-10-28 00:22:23,085 INFO L226 Difference]: Without dead ends: 1686 [2020-10-28 00:22:23,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 00:22:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-28 00:22:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1671. [2020-10-28 00:22:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-28 00:22:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2586 transitions. [2020-10-28 00:22:23,210 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2586 transitions. Word has length 103 [2020-10-28 00:22:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:23,211 INFO L481 AbstractCegarLoop]: Abstraction has 1671 states and 2586 transitions. [2020-10-28 00:22:23,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:22:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2586 transitions. [2020-10-28 00:22:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:22:23,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:23,214 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] [2020-10-28 00:22:23,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:22:23,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1724122877, now seen corresponding path program 1 times [2020-10-28 00:22:23,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:23,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095227391] [2020-10-28 00:22:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:24,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:24,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:22:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 00:22:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:24,410 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:24,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:24,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:24,484 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 00:22:24,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095227391] [2020-10-28 00:22:24,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:24,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:22:24,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148693282] [2020-10-28 00:22:24,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:22:24,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:24,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:22:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:24,487 INFO L87 Difference]: Start difference. First operand 1671 states and 2586 transitions. Second operand 5 states. [2020-10-28 00:22:24,782 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:22:25,799 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:22:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:26,370 INFO L93 Difference]: Finished difference Result 3879 states and 6080 transitions. [2020-10-28 00:22:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 00:22:26,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-28 00:22:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:26,387 INFO L225 Difference]: With dead ends: 3879 [2020-10-28 00:22:26,387 INFO L226 Difference]: Without dead ends: 2736 [2020-10-28 00:22:26,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:22:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2020-10-28 00:22:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2721. [2020-10-28 00:22:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2721 states. [2020-10-28 00:22:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4232 transitions. [2020-10-28 00:22:26,571 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4232 transitions. Word has length 104 [2020-10-28 00:22:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:26,572 INFO L481 AbstractCegarLoop]: Abstraction has 2721 states and 4232 transitions. [2020-10-28 00:22:26,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:22:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4232 transitions. [2020-10-28 00:22:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:22:26,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:26,576 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] [2020-10-28 00:22:26,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:22:26,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1056096728, now seen corresponding path program 1 times [2020-10-28 00:22:26,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:26,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523311952] [2020-10-28 00:22:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:31,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 00:22:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:22:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:31,945 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:31,994 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 00:22:31,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523311952] [2020-10-28 00:22:31,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:31,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:31,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701065408] [2020-10-28 00:22:31,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:31,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:31,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:31,997 INFO L87 Difference]: Start difference. First operand 2721 states and 4232 transitions. Second operand 4 states. [2020-10-28 00:22:32,254 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:22:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:33,517 INFO L93 Difference]: Finished difference Result 6007 states and 9416 transitions. [2020-10-28 00:22:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:33,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:22:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:33,541 INFO L225 Difference]: With dead ends: 6007 [2020-10-28 00:22:33,541 INFO L226 Difference]: Without dead ends: 4340 [2020-10-28 00:22:33,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-10-28 00:22:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 4327. [2020-10-28 00:22:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4327 states. [2020-10-28 00:22:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 6702 transitions. [2020-10-28 00:22:33,821 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 6702 transitions. Word has length 105 [2020-10-28 00:22:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:33,822 INFO L481 AbstractCegarLoop]: Abstraction has 4327 states and 6702 transitions. [2020-10-28 00:22:33,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 6702 transitions. [2020-10-28 00:22:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:22:33,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:33,825 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] [2020-10-28 00:22:33,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:22:33,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:33,826 INFO L82 PathProgramCache]: Analyzing trace with hash 121835990, now seen corresponding path program 1 times [2020-10-28 00:22:33,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:33,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702999620] [2020-10-28 00:22:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:22:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:22:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:22:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:22:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:22:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:39,210 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:39,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:39,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:22:39,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:39,268 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 00:22:39,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702999620] [2020-10-28 00:22:39,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:39,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:39,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928603318] [2020-10-28 00:22:39,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:39,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:39,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:39,271 INFO L87 Difference]: Start difference. First operand 4327 states and 6702 transitions. Second operand 4 states. [2020-10-28 00:22:39,624 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:22:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:40,934 INFO L93 Difference]: Finished difference Result 8682 states and 13512 transitions. [2020-10-28 00:22:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:40,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:22:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:40,967 INFO L225 Difference]: With dead ends: 8682 [2020-10-28 00:22:40,967 INFO L226 Difference]: Without dead ends: 6305 [2020-10-28 00:22:40,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6305 states. [2020-10-28 00:22:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6305 to 6292. [2020-10-28 00:22:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6292 states. [2020-10-28 00:22:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6292 states to 6292 states and 9672 transitions. [2020-10-28 00:22:41,366 INFO L78 Accepts]: Start accepts. Automaton has 6292 states and 9672 transitions. Word has length 105 [2020-10-28 00:22:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:41,366 INFO L481 AbstractCegarLoop]: Abstraction has 6292 states and 9672 transitions. [2020-10-28 00:22:41,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:41,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6292 states and 9672 transitions. [2020-10-28 00:22:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:22:41,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:41,371 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] [2020-10-28 00:22:41,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:22:41,372 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash 943236504, now seen corresponding path program 1 times [2020-10-28 00:22:41,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:41,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280653032] [2020-10-28 00:22:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:46,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:46,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:22:46,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:22:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:22:46,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 00:22:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:22:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:46,720 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:46,766 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 00:22:46,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280653032] [2020-10-28 00:22:46,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:46,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693210749] [2020-10-28 00:22:46,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:46,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:46,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:46,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:46,769 INFO L87 Difference]: Start difference. First operand 6292 states and 9672 transitions. Second operand 4 states. [2020-10-28 00:22:47,032 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:22:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:48,320 INFO L93 Difference]: Finished difference Result 11542 states and 17790 transitions. [2020-10-28 00:22:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:48,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:22:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:48,366 INFO L225 Difference]: With dead ends: 11542 [2020-10-28 00:22:48,367 INFO L226 Difference]: Without dead ends: 8539 [2020-10-28 00:22:48,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2020-10-28 00:22:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 8516. [2020-10-28 00:22:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8516 states. [2020-10-28 00:22:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 12964 transitions. [2020-10-28 00:22:48,996 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 12964 transitions. Word has length 105 [2020-10-28 00:22:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:48,997 INFO L481 AbstractCegarLoop]: Abstraction has 8516 states and 12964 transitions. [2020-10-28 00:22:48,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 12964 transitions. [2020-10-28 00:22:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:22:49,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:49,003 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] [2020-10-28 00:22:49,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:22:49,003 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:49,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1608542579, now seen corresponding path program 1 times [2020-10-28 00:22:49,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:49,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998963990] [2020-10-28 00:22:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:54,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:22:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:22:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:54,335 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:54,387 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 00:22:54,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998963990] [2020-10-28 00:22:54,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:54,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:54,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795205406] [2020-10-28 00:22:54,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:54,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:54,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:54,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:54,389 INFO L87 Difference]: Start difference. First operand 8516 states and 12964 transitions. Second operand 4 states. [2020-10-28 00:22:54,684 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:22:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:56,238 INFO L93 Difference]: Finished difference Result 12722 states and 19372 transitions. [2020-10-28 00:22:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:56,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:22:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:56,266 INFO L225 Difference]: With dead ends: 12722 [2020-10-28 00:22:56,267 INFO L226 Difference]: Without dead ends: 9815 [2020-10-28 00:22:56,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2020-10-28 00:22:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 9812. [2020-10-28 00:22:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9812 states. [2020-10-28 00:22:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9812 states to 9812 states and 14800 transitions. [2020-10-28 00:22:56,857 INFO L78 Accepts]: Start accepts. Automaton has 9812 states and 14800 transitions. Word has length 105 [2020-10-28 00:22:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:56,857 INFO L481 AbstractCegarLoop]: Abstraction has 9812 states and 14800 transitions. [2020-10-28 00:22:56,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9812 states and 14800 transitions. [2020-10-28 00:22:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:22:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:56,863 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] [2020-10-28 00:22:56,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:22:56,863 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash -91394666, now seen corresponding path program 1 times [2020-10-28 00:22:56,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:56,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324185330] [2020-10-28 00:22:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2808 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:22:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:59,987 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:22:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:00,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:00,030 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 00:23:00,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324185330] [2020-10-28 00:23:00,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:00,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:23:00,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101925284] [2020-10-28 00:23:00,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:23:00,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:23:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:00,032 INFO L87 Difference]: Start difference. First operand 9812 states and 14800 transitions. Second operand 6 states. [2020-10-28 00:23:01,212 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:23:02,910 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:23:04,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:04,256 INFO L93 Difference]: Finished difference Result 69920 states and 104967 transitions. [2020-10-28 00:23:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:23:04,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:23:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:04,413 INFO L225 Difference]: With dead ends: 69920 [2020-10-28 00:23:04,413 INFO L226 Difference]: Without dead ends: 60684 [2020-10-28 00:23:04,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:23:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60684 states. [2020-10-28 00:23:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60684 to 10252. [2020-10-28 00:23:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10252 states. [2020-10-28 00:23:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10252 states to 10252 states and 15181 transitions. [2020-10-28 00:23:05,939 INFO L78 Accepts]: Start accepts. Automaton has 10252 states and 15181 transitions. Word has length 105 [2020-10-28 00:23:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:05,940 INFO L481 AbstractCegarLoop]: Abstraction has 10252 states and 15181 transitions. [2020-10-28 00:23:05,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:23:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 10252 states and 15181 transitions. [2020-10-28 00:23:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:23:05,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:05,947 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] [2020-10-28 00:23:05,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:23:05,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:05,948 INFO L82 PathProgramCache]: Analyzing trace with hash 939847192, now seen corresponding path program 1 times [2020-10-28 00:23:05,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:05,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137970288] [2020-10-28 00:23:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:10,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:23:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:11,256 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:11,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:11,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:11,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:11,303 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 00:23:11,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137970288] [2020-10-28 00:23:11,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:11,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:11,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019819118] [2020-10-28 00:23:11,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:11,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:11,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:11,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:11,305 INFO L87 Difference]: Start difference. First operand 10252 states and 15181 transitions. Second operand 4 states. [2020-10-28 00:23:11,622 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:23:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:13,534 INFO L93 Difference]: Finished difference Result 27598 states and 41171 transitions. [2020-10-28 00:23:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:13,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:23:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:13,585 INFO L225 Difference]: With dead ends: 27598 [2020-10-28 00:23:13,585 INFO L226 Difference]: Without dead ends: 18411 [2020-10-28 00:23:13,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18411 states. [2020-10-28 00:23:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18411 to 18408. [2020-10-28 00:23:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18408 states. [2020-10-28 00:23:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 27257 transitions. [2020-10-28 00:23:14,798 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 27257 transitions. Word has length 105 [2020-10-28 00:23:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:14,798 INFO L481 AbstractCegarLoop]: Abstraction has 18408 states and 27257 transitions. [2020-10-28 00:23:14,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 27257 transitions. [2020-10-28 00:23:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:23:14,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:14,807 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] [2020-10-28 00:23:14,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:23:14,807 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -167870487, now seen corresponding path program 1 times [2020-10-28 00:23:14,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:14,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349311345] [2020-10-28 00:23:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2768 [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:23:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:23:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 00:23:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:17,882 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:17,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:17,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:17,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:23:17,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:17,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349311345] [2020-10-28 00:23:17,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:17,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:23:17,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101737311] [2020-10-28 00:23:17,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:23:17,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:23:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:17,927 INFO L87 Difference]: Start difference. First operand 18408 states and 27257 transitions. Second operand 6 states. [2020-10-28 00:23:19,341 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:23:22,852 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:23:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:25,625 INFO L93 Difference]: Finished difference Result 118975 states and 175761 transitions. [2020-10-28 00:23:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:23:25,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:23:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:25,798 INFO L225 Difference]: With dead ends: 118975 [2020-10-28 00:23:25,799 INFO L226 Difference]: Without dead ends: 102186 [2020-10-28 00:23:25,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:23:25,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102186 states. [2020-10-28 00:23:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102186 to 19784. [2020-10-28 00:23:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19784 states. [2020-10-28 00:23:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19784 states to 19784 states and 28713 transitions. [2020-10-28 00:23:27,891 INFO L78 Accepts]: Start accepts. Automaton has 19784 states and 28713 transitions. Word has length 105 [2020-10-28 00:23:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:27,891 INFO L481 AbstractCegarLoop]: Abstraction has 19784 states and 28713 transitions. [2020-10-28 00:23:27,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:23:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 19784 states and 28713 transitions. [2020-10-28 00:23:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:23:27,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:27,905 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] [2020-10-28 00:23:27,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:23:27,906 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:27,906 INFO L82 PathProgramCache]: Analyzing trace with hash 515823313, now seen corresponding path program 1 times [2020-10-28 00:23:27,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:27,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747255876] [2020-10-28 00:23:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:23:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:23:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-10-28 00:23:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:23:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:23:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:23:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:30,790 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:30,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:30,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:30,833 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 00:23:30,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747255876] [2020-10-28 00:23:30,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:30,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:23:30,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743771130] [2020-10-28 00:23:30,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:23:30,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:23:30,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:30,835 INFO L87 Difference]: Start difference. First operand 19784 states and 28713 transitions. Second operand 6 states. [2020-10-28 00:23:32,318 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:23:35,119 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:23:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:37,287 INFO L93 Difference]: Finished difference Result 79726 states and 115875 transitions. [2020-10-28 00:23:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:23:37,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:23:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:37,362 INFO L225 Difference]: With dead ends: 79726 [2020-10-28 00:23:37,362 INFO L226 Difference]: Without dead ends: 63882 [2020-10-28 00:23:37,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:23:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63882 states. [2020-10-28 00:23:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63882 to 35031. [2020-10-28 00:23:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35031 states. [2020-10-28 00:23:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35031 states to 35031 states and 50455 transitions. [2020-10-28 00:23:40,719 INFO L78 Accepts]: Start accepts. Automaton has 35031 states and 50455 transitions. Word has length 105 [2020-10-28 00:23:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:40,719 INFO L481 AbstractCegarLoop]: Abstraction has 35031 states and 50455 transitions. [2020-10-28 00:23:40,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:23:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 35031 states and 50455 transitions. [2020-10-28 00:23:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:23:40,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:40,736 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] [2020-10-28 00:23:40,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:23:40,737 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1733575627, now seen corresponding path program 1 times [2020-10-28 00:23:40,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:40,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827805567] [2020-10-28 00:23:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:42,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:23:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:43,360 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:43,402 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 00:23:43,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827805567] [2020-10-28 00:23:43,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:43,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:23:43,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2238494] [2020-10-28 00:23:43,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:23:43,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:23:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:43,404 INFO L87 Difference]: Start difference. First operand 35031 states and 50455 transitions. Second operand 6 states. [2020-10-28 00:23:44,878 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:23:48,961 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:23:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:57,458 INFO L93 Difference]: Finished difference Result 181366 states and 259881 transitions. [2020-10-28 00:23:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:23:57,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:23:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:57,692 INFO L225 Difference]: With dead ends: 181366 [2020-10-28 00:23:57,692 INFO L226 Difference]: Without dead ends: 151813 [2020-10-28 00:23:57,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:23:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151813 states. [2020-10-28 00:24:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151813 to 37596. [2020-10-28 00:24:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37596 states. [2020-10-28 00:24:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37596 states to 37596 states and 53511 transitions. [2020-10-28 00:24:01,609 INFO L78 Accepts]: Start accepts. Automaton has 37596 states and 53511 transitions. Word has length 105 [2020-10-28 00:24:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:01,609 INFO L481 AbstractCegarLoop]: Abstraction has 37596 states and 53511 transitions. [2020-10-28 00:24:01,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:24:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 37596 states and 53511 transitions. [2020-10-28 00:24:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:24:01,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:01,623 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] [2020-10-28 00:24:01,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:24:01,624 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:01,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:01,624 INFO L82 PathProgramCache]: Analyzing trace with hash -138929672, now seen corresponding path program 1 times [2020-10-28 00:24:01,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:01,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565969812] [2020-10-28 00:24:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:04,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:04,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2744 [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:24:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:04,684 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:04,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:04,730 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 00:24:04,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565969812] [2020-10-28 00:24:04,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:04,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:04,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029648210] [2020-10-28 00:24:04,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:04,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:04,732 INFO L87 Difference]: Start difference. First operand 37596 states and 53511 transitions. Second operand 6 states. [2020-10-28 00:24:06,530 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:11,788 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:24:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:22,805 INFO L93 Difference]: Finished difference Result 205821 states and 292461 transitions. [2020-10-28 00:24:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:24:22,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:24:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:23,074 INFO L225 Difference]: With dead ends: 205821 [2020-10-28 00:24:23,075 INFO L226 Difference]: Without dead ends: 175806 [2020-10-28 00:24:23,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:24:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175806 states. [2020-10-28 00:24:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175806 to 41079. [2020-10-28 00:24:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41079 states. [2020-10-28 00:24:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41079 states to 41079 states and 57757 transitions. [2020-10-28 00:24:27,856 INFO L78 Accepts]: Start accepts. Automaton has 41079 states and 57757 transitions. Word has length 105 [2020-10-28 00:24:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:27,861 INFO L481 AbstractCegarLoop]: Abstraction has 41079 states and 57757 transitions. [2020-10-28 00:24:27,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:24:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 41079 states and 57757 transitions. [2020-10-28 00:24:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:24:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:27,882 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] [2020-10-28 00:24:27,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:24:27,883 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash -71337083, now seen corresponding path program 1 times [2020-10-28 00:24:27,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:27,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552708452] [2020-10-28 00:24:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:32,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:32,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:24:32,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:24:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:24:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 00:24:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 00:24:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:33,181 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:33,231 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 00:24:33,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552708452] [2020-10-28 00:24:33,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:33,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:33,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267169011] [2020-10-28 00:24:33,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:33,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:33,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:33,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:33,233 INFO L87 Difference]: Start difference. First operand 41079 states and 57757 transitions. Second operand 4 states. [2020-10-28 00:24:33,488 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:24:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:41,228 INFO L93 Difference]: Finished difference Result 101724 states and 143795 transitions. [2020-10-28 00:24:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:41,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:24:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:41,299 INFO L225 Difference]: With dead ends: 101724 [2020-10-28 00:24:41,299 INFO L226 Difference]: Without dead ends: 68869 [2020-10-28 00:24:41,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68869 states. [2020-10-28 00:24:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68869 to 68850. [2020-10-28 00:24:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68850 states. [2020-10-28 00:24:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68850 states to 68850 states and 95927 transitions. [2020-10-28 00:24:47,900 INFO L78 Accepts]: Start accepts. Automaton has 68850 states and 95927 transitions. Word has length 105 [2020-10-28 00:24:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:47,900 INFO L481 AbstractCegarLoop]: Abstraction has 68850 states and 95927 transitions. [2020-10-28 00:24:47,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 68850 states and 95927 transitions. [2020-10-28 00:24:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:24:47,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:47,926 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] [2020-10-28 00:24:47,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:24:47,927 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash 959904775, now seen corresponding path program 1 times [2020-10-28 00:24:47,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:47,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255148169] [2020-10-28 00:24:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4122 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:24:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:52,360 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:52,399 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 00:24:52,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255148169] [2020-10-28 00:24:52,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:52,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:52,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936237900] [2020-10-28 00:24:52,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:52,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:52,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:52,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:52,401 INFO L87 Difference]: Start difference. First operand 68850 states and 95927 transitions. Second operand 6 states. [2020-10-28 00:24:55,376 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:56,132 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:25:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:19,083 INFO L93 Difference]: Finished difference Result 286574 states and 400967 transitions. [2020-10-28 00:25:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:25:19,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 00:25:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:19,652 INFO L225 Difference]: With dead ends: 286574 [2020-10-28 00:25:19,652 INFO L226 Difference]: Without dead ends: 228850 [2020-10-28 00:25:19,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:25:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228850 states. [2020-10-28 00:25:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228850 to 70327. [2020-10-28 00:25:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70327 states. [2020-10-28 00:25:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70327 states to 70327 states and 96812 transitions. [2020-10-28 00:25:28,076 INFO L78 Accepts]: Start accepts. Automaton has 70327 states and 96812 transitions. Word has length 105 [2020-10-28 00:25:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:28,076 INFO L481 AbstractCegarLoop]: Abstraction has 70327 states and 96812 transitions. [2020-10-28 00:25:28,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:25:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 70327 states and 96812 transitions. [2020-10-28 00:25:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 00:25:28,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:28,098 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] [2020-10-28 00:25:28,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:25:28,098 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1235789814, now seen corresponding path program 1 times [2020-10-28 00:25:28,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:28,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354618233] [2020-10-28 00:25:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:30,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:25:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:25:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 00:25:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:33,699 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:25:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:25:33,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:33,770 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 00:25:33,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354618233] [2020-10-28 00:25:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:25:33,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7103717] [2020-10-28 00:25:33,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:25:33,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:25:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:25:33,773 INFO L87 Difference]: Start difference. First operand 70327 states and 96812 transitions. Second operand 11 states. [2020-10-28 00:25:34,148 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:25:35,930 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-10-28 00:25:39,533 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 204