/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:43:43,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:43:43,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:43:43,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:43:43,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:43:43,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:43:43,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:43:43,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:43:43,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:43:43,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:43:43,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:43:43,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:43:43,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:43:43,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:43:43,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:43:43,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:43:43,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:43:43,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:43:43,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:43:43,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:43:43,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:43:43,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:43:43,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:43:43,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:43:43,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:43:43,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:43:43,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:43:43,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:43:43,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:43:43,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:43:43,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:43:43,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:43:43,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:43:43,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:43:43,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:43:43,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:43:43,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:43:43,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:43:43,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:43:43,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:43:43,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:43:43,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:43:43,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:43:43,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:43:43,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:43:43,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:43:43,691 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:43:43,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:43:43,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:43:43,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:43:43,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:43:43,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:43:43,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:43:43,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:43:43,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:43:43,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:43:43,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:43:43,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:43:43,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:43:43,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:43:43,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:43:43,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:43:44,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:43:44,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:43:44,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:43:44,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:43:44,092 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:43:44,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:43:44,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d3a446b/e027f1dd9d034e3ba765b8ef6dea6ee6/FLAGc7d034015 [2020-10-28 18:43:45,282 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:43:45,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:43:45,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d3a446b/e027f1dd9d034e3ba765b8ef6dea6ee6/FLAGc7d034015 [2020-10-28 18:43:45,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d3a446b/e027f1dd9d034e3ba765b8ef6dea6ee6 [2020-10-28 18:43:45,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:43:45,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:43:45,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:43:45,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:43:45,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:43:45,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:43:45" (1/1) ... [2020-10-28 18:43:45,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3898f96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:45, skipping insertion in model container [2020-10-28 18:43:45,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:43:45" (1/1) ... [2020-10-28 18:43:45,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:43:45,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:43:47,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:43:47,281 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:43:47,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:43:47,907 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:43:47,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47 WrapperNode [2020-10-28 18:43:47,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:43:47,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:43:47,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:43:47,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:43:47,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:47,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... [2020-10-28 18:43:48,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:43:48,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:43:48,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:43:48,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:43:48,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:43:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:43:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:43:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:43:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:43:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:43:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:43:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:43:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:43:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:43:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:43:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:43:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:43:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:43:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:43:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:43:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:43:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:43:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:43:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:43:54,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:43:54,183 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:43:54,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:43:54 BoogieIcfgContainer [2020-10-28 18:43:54,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:43:54,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:43:54,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:43:54,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:43:54,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:43:45" (1/3) ... [2020-10-28 18:43:54,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c6932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:43:54, skipping insertion in model container [2020-10-28 18:43:54,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:43:47" (2/3) ... [2020-10-28 18:43:54,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c6932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:43:54, skipping insertion in model container [2020-10-28 18:43:54,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:43:54" (3/3) ... [2020-10-28 18:43:54,213 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:43:54,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:43:54,231 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:43:54,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:43:54,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:43:54,290 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:43:54,290 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:43:54,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:43:54,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:43:54,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:43:54,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:43:54,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:43:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states. [2020-10-28 18:43:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 18:43:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:54,371 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] [2020-10-28 18:43:54,371 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1673233271, now seen corresponding path program 1 times [2020-10-28 18:43:54,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:54,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835302994] [2020-10-28 18:43:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:59,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 18:43:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:43:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 18:43:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:43:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:43:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:43:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:44:03,239 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:44:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 18:44:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:03,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:44:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:44:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:03,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835302994] [2020-10-28 18:44:03,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:03,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:44:03,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918514273] [2020-10-28 18:44:03,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:44:03,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:44:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:44:03,491 INFO L87 Difference]: Start difference. First operand 1133 states. Second operand 6 states. [2020-10-28 18:44:06,914 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-28 18:44:20,834 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-28 18:44:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:21,762 INFO L93 Difference]: Finished difference Result 2013 states and 3577 transitions. [2020-10-28 18:44:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:44:21,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-28 18:44:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:21,790 INFO L225 Difference]: With dead ends: 2013 [2020-10-28 18:44:21,790 INFO L226 Difference]: Without dead ends: 1180 [2020-10-28 18:44:21,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:44:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-28 18:44:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1114. [2020-10-28 18:44:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-10-28 18:44:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1514 transitions. [2020-10-28 18:44:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1514 transitions. Word has length 90 [2020-10-28 18:44:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:21,948 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 1514 transitions. [2020-10-28 18:44:21,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:44:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1514 transitions. [2020-10-28 18:44:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 18:44:21,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:21,959 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] [2020-10-28 18:44:21,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:44:21,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash -445145111, now seen corresponding path program 1 times [2020-10-28 18:44:21,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:21,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121282482] [2020-10-28 18:44:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:27,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:27,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 18:44:27,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:44:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 18:44:27,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:27,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:44:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:44:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:44:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:30,733 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:44:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:30,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 18:44:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:30,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:44:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:44:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:30,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121282482] [2020-10-28 18:44:30,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:30,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:44:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577944128] [2020-10-28 18:44:30,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:44:30,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:30,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:44:30,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:44:30,926 INFO L87 Difference]: Start difference. First operand 1114 states and 1514 transitions. Second operand 6 states. [2020-10-28 18:44:34,415 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-28 18:44:44,295 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-28 18:44:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:45,244 INFO L93 Difference]: Finished difference Result 2220 states and 3079 transitions. [2020-10-28 18:44:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:44:45,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-28 18:44:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:45,254 INFO L225 Difference]: With dead ends: 2220 [2020-10-28 18:44:45,254 INFO L226 Difference]: Without dead ends: 1338 [2020-10-28 18:44:45,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:44:45,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-28 18:44:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1274. [2020-10-28 18:44:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-28 18:44:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1747 transitions. [2020-10-28 18:44:45,326 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1747 transitions. Word has length 91 [2020-10-28 18:44:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:45,326 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 1747 transitions. [2020-10-28 18:44:45,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:44:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1747 transitions. [2020-10-28 18:44:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 18:44:45,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:45,330 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] [2020-10-28 18:44:45,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:44:45,331 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1533859313, now seen corresponding path program 1 times [2020-10-28 18:44:45,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:45,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991338834] [2020-10-28 18:44:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:50,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:50,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 18:44:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:44:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 18:44:50,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:50,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:44:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:44:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:44:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:53,934 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:44:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:53,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:53,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:53,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:44:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:53,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:54,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991338834] [2020-10-28 18:44:54,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:54,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:44:54,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32845089] [2020-10-28 18:44:54,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:44:54,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:44:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:44:54,030 INFO L87 Difference]: Start difference. First operand 1274 states and 1747 transitions. Second operand 7 states. [2020-10-28 18:44:57,670 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-28 18:45:07,147 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-28 18:45:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:08,867 INFO L93 Difference]: Finished difference Result 2157 states and 3019 transitions. [2020-10-28 18:45:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:45:08,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-28 18:45:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:08,907 INFO L225 Difference]: With dead ends: 2157 [2020-10-28 18:45:08,907 INFO L226 Difference]: Without dead ends: 1481 [2020-10-28 18:45:08,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:45:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-10-28 18:45:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1274. [2020-10-28 18:45:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-28 18:45:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1746 transitions. [2020-10-28 18:45:08,987 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1746 transitions. Word has length 92 [2020-10-28 18:45:08,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:08,988 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 1746 transitions. [2020-10-28 18:45:08,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:45:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1746 transitions. [2020-10-28 18:45:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 18:45:08,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:08,991 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] [2020-10-28 18:45:08,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:45:08,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1581012426, now seen corresponding path program 1 times [2020-10-28 18:45:08,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:08,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156372164] [2020-10-28 18:45:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 18:45:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:45:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:45:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:45:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 18:45:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:17,352 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:45:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:17,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:17,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:17,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 18:45:17,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:17,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:45:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:45:17,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156372164] [2020-10-28 18:45:17,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:17,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:45:17,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84345882] [2020-10-28 18:45:17,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:45:17,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:45:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:45:17,472 INFO L87 Difference]: Start difference. First operand 1274 states and 1746 transitions. Second operand 6 states. [2020-10-28 18:45:20,888 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-28 18:45:29,945 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-28 18:45:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:30,913 INFO L93 Difference]: Finished difference Result 2905 states and 4075 transitions. [2020-10-28 18:45:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:45:30,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-28 18:45:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:30,925 INFO L225 Difference]: With dead ends: 2905 [2020-10-28 18:45:30,925 INFO L226 Difference]: Without dead ends: 1799 [2020-10-28 18:45:30,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:45:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-10-28 18:45:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1733. [2020-10-28 18:45:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-28 18:45:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2432 transitions. [2020-10-28 18:45:31,037 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2432 transitions. Word has length 92 [2020-10-28 18:45:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2432 transitions. [2020-10-28 18:45:31,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:45:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2432 transitions. [2020-10-28 18:45:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 18:45:31,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:31,042 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] [2020-10-28 18:45:31,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:45:31,042 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1394788530, now seen corresponding path program 1 times [2020-10-28 18:45:31,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:31,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185405739] [2020-10-28 18:45:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:36,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:45:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:45:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 18:45:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:39,775 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:45:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 18:45:39,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:39,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:45:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:45:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:45:39,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185405739] [2020-10-28 18:45:39,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:39,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:45:39,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256649984] [2020-10-28 18:45:39,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:45:39,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:39,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:45:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:45:39,877 INFO L87 Difference]: Start difference. First operand 1733 states and 2432 transitions. Second operand 8 states. [2020-10-28 18:45:43,245 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-28 18:45:54,575 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-28 18:45:59,193 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-28 18:46:05,510 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-28 18:46:08,822 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification that was a NOOP. DAG size: 498 [2020-10-28 18:46:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:09,379 INFO L93 Difference]: Finished difference Result 10447 states and 15715 transitions. [2020-10-28 18:46:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 18:46:09,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-28 18:46:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:09,427 INFO L225 Difference]: With dead ends: 10447 [2020-10-28 18:46:09,428 INFO L226 Difference]: Without dead ends: 9392 [2020-10-28 18:46:09,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:46:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2020-10-28 18:46:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 1741. [2020-10-28 18:46:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2020-10-28 18:46:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2434 transitions. [2020-10-28 18:46:09,707 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2434 transitions. Word has length 93 [2020-10-28 18:46:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:09,707 INFO L481 AbstractCegarLoop]: Abstraction has 1741 states and 2434 transitions. [2020-10-28 18:46:09,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:46:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2434 transitions. [2020-10-28 18:46:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 18:46:09,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:09,711 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] [2020-10-28 18:46:09,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:46:09,712 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:09,712 INFO L82 PathProgramCache]: Analyzing trace with hash 125394197, now seen corresponding path program 1 times [2020-10-28 18:46:09,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:09,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095518706] [2020-10-28 18:46:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:14,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:14,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 18:46:14,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:46:14,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 18:46:14,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:14,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:46:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:46:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:46:14,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:18,177 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:46:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:18,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:18,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:18,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:46:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:46:18,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095518706] [2020-10-28 18:46:18,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:18,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:46:18,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547495193] [2020-10-28 18:46:18,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:46:18,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:18,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:46:18,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:46:18,298 INFO L87 Difference]: Start difference. First operand 1741 states and 2434 transitions. Second operand 8 states. [2020-10-28 18:46:21,721 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-28 18:46:28,672 WARN L193 SmtUtils]: Spent 3.34 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-28 18:46:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:29,815 INFO L93 Difference]: Finished difference Result 2641 states and 3800 transitions. [2020-10-28 18:46:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:46:29,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-28 18:46:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:29,823 INFO L225 Difference]: With dead ends: 2641 [2020-10-28 18:46:29,824 INFO L226 Difference]: Without dead ends: 1582 [2020-10-28 18:46:29,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:46:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2020-10-28 18:46:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1243. [2020-10-28 18:46:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-10-28 18:46:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1742 transitions. [2020-10-28 18:46:29,967 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1742 transitions. Word has length 93 [2020-10-28 18:46:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:29,967 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states and 1742 transitions. [2020-10-28 18:46:29,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:46:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1742 transitions. [2020-10-28 18:46:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 18:46:29,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:29,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:29,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:46:29,970 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1815112323, now seen corresponding path program 1 times [2020-10-28 18:46:29,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:29,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331589647] [2020-10-28 18:46:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:46:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:38,629 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:46:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:38,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:46:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:46:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:46:38,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331589647] [2020-10-28 18:46:38,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:38,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:46:38,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562553322] [2020-10-28 18:46:38,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:46:38,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:38,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:46:38,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:46:38,748 INFO L87 Difference]: Start difference. First operand 1243 states and 1742 transitions. Second operand 8 states. [2020-10-28 18:46:42,369 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-28 18:46:50,288 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-28 18:46:56,106 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 501 [2020-10-28 18:46:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:56,573 INFO L93 Difference]: Finished difference Result 5773 states and 8569 transitions. [2020-10-28 18:46:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:46:56,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-28 18:46:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:56,595 INFO L225 Difference]: With dead ends: 5773 [2020-10-28 18:46:56,595 INFO L226 Difference]: Without dead ends: 4708 [2020-10-28 18:46:56,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:46:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2020-10-28 18:46:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 1253. [2020-10-28 18:46:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-10-28 18:46:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1753 transitions. [2020-10-28 18:46:56,800 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1753 transitions. Word has length 95 [2020-10-28 18:46:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:56,800 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 1753 transitions. [2020-10-28 18:46:56,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:46:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1753 transitions. [2020-10-28 18:46:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 18:46:56,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:56,803 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] [2020-10-28 18:46:56,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:46:56,804 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1999591788, now seen corresponding path program 1 times [2020-10-28 18:46:56,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:56,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425479102] [2020-10-28 18:46:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:01,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:01,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 18:47:01,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:47:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:47:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:01,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:47:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:47:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:47:05,468 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:47:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:47:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:05,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425479102] [2020-10-28 18:47:05,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:05,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:47:05,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642004322] [2020-10-28 18:47:05,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:05,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:05,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:05,564 INFO L87 Difference]: Start difference. First operand 1253 states and 1753 transitions. Second operand 6 states. [2020-10-28 18:47:09,249 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-28 18:47:16,453 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-28 18:47:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:17,546 INFO L93 Difference]: Finished difference Result 3136 states and 4501 transitions. [2020-10-28 18:47:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:47:17,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-28 18:47:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:17,561 INFO L225 Difference]: With dead ends: 3136 [2020-10-28 18:47:17,561 INFO L226 Difference]: Without dead ends: 2007 [2020-10-28 18:47:17,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:47:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-28 18:47:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1956. [2020-10-28 18:47:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-28 18:47:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2814 transitions. [2020-10-28 18:47:17,898 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2814 transitions. Word has length 95 [2020-10-28 18:47:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:17,898 INFO L481 AbstractCegarLoop]: Abstraction has 1956 states and 2814 transitions. [2020-10-28 18:47:17,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2814 transitions. [2020-10-28 18:47:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 18:47:17,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:17,902 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] [2020-10-28 18:47:17,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:47:17,903 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:17,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2101898236, now seen corresponding path program 1 times [2020-10-28 18:47:17,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:17,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268270143] [2020-10-28 18:47:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:22,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 18:47:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:26,639 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-28 18:47:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:26,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:26,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:26,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:47:26,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:26,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:26,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268270143] [2020-10-28 18:47:26,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:26,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:47:26,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271377262] [2020-10-28 18:47:26,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:47:26,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:26,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:47:26,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:47:26,724 INFO L87 Difference]: Start difference. First operand 1956 states and 2814 transitions. Second operand 8 states.