/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:25:47,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:25:47,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:25:47,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:25:47,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:25:47,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:25:47,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:25:47,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:25:47,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:25:47,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:25:47,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:25:47,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:25:47,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:25:47,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:25:47,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:25:47,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:25:47,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:25:47,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:25:47,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:25:47,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:25:47,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:25:47,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:25:47,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:25:47,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:25:47,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:25:47,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:25:47,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:25:47,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:25:47,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:25:47,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:25:47,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:25:47,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:25:47,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:25:47,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:25:47,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:25:47,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:25:47,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:25:47,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:25:47,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:25:47,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:25:47,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:25:47,565 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 [2020-10-29 13:25:47,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:25:47,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:25:47,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:25:47,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:25:47,624 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:25:47,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:25:47,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:25:47,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:25:47,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:25:47,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:25:47,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:25:47,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:25:47,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:25:47,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:25:47,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:25:47,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:25:47,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:25:47,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:25:47,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:25:47,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:25:47,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:25:47,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:25:47,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:25:47,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:25:47,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:25:47,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:25:47,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:25:47,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:25:47,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:25:47,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:25:48,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:25:48,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:25:48,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:25:48,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:25:48,080 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:25:48,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-29 13:25:48,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fffed27/afd3bc4dedc544329d1806a9a1e9ce17/FLAGfc6fe4f5c [2020-10-29 13:25:48,939 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:25:48,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-29 13:25:48,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fffed27/afd3bc4dedc544329d1806a9a1e9ce17/FLAGfc6fe4f5c [2020-10-29 13:25:49,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fffed27/afd3bc4dedc544329d1806a9a1e9ce17 [2020-10-29 13:25:49,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:25:49,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:25:49,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:49,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:25:49,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:25:49,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4965441a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49, skipping insertion in model container [2020-10-29 13:25:49,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:25:49,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:25:49,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:49,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:25:49,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:49,930 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:25:49,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49 WrapperNode [2020-10-29 13:25:49,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:49,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:25:49,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:25:49,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:25:49,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:49,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:50,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:50,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (1/1) ... [2020-10-29 13:25:50,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:25:50,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:25:50,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:25:50,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:25:50,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (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 [2020-10-29 13:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:25:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:25:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:25:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:25:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:25:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:25:51,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:25:51,240 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:25:51,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:25:51 BoogieIcfgContainer [2020-10-29 13:25:51,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:25:51,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:25:51,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:25:51,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:25:51,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:25:49" (1/3) ... [2020-10-29 13:25:51,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf6d231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:25:51, skipping insertion in model container [2020-10-29 13:25:51,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:49" (2/3) ... [2020-10-29 13:25:51,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf6d231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:25:51, skipping insertion in model container [2020-10-29 13:25:51,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:25:51" (3/3) ... [2020-10-29 13:25:51,251 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-29 13:25:51,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:25:51,268 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:25:51,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:25:51,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:25:51,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:25:51,310 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:25:51,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:25:51,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:25:51,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:25:51,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:25:51,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:25:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2020-10-29 13:25:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:25:51,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:51,355 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] [2020-10-29 13:25:51,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1215232441, now seen corresponding path program 1 times [2020-10-29 13:25:51,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:51,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77845821] [2020-10-29 13:25:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:25:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:25:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:25:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:25:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:25:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 13:25:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:25:57,256 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:25:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:25:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:57,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:57,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77845821] [2020-10-29 13:25:57,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:57,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:25:57,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545026521] [2020-10-29 13:25:57,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:25:57,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:57,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:25:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:25:57,374 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 4 states. [2020-10-29 13:25:57,699 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:25:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:59,160 INFO L93 Difference]: Finished difference Result 541 states and 872 transitions. [2020-10-29 13:25:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:25:59,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-29 13:25:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:59,208 INFO L225 Difference]: With dead ends: 541 [2020-10-29 13:25:59,209 INFO L226 Difference]: Without dead ends: 421 [2020-10-29 13:25:59,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:25:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-29 13:25:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 410. [2020-10-29 13:25:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-29 13:25:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 666 transitions. [2020-10-29 13:25:59,305 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 666 transitions. Word has length 96 [2020-10-29 13:25:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:59,306 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 666 transitions. [2020-10-29 13:25:59,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:25:59,306 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 666 transitions. [2020-10-29 13:25:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:25:59,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:59,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:59,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:25:59,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1388810535, now seen corresponding path program 1 times [2020-10-29 13:25:59,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:59,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730708403] [2020-10-29 13:25:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:26:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:26:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:26:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:04,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 13:26:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:26:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:04,645 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:04,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:04,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:26:04,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:04,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730708403] [2020-10-29 13:26:04,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:04,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:04,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767302195] [2020-10-29 13:26:04,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:04,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:04,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:04,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:04,707 INFO L87 Difference]: Start difference. First operand 410 states and 666 transitions. Second operand 4 states. [2020-10-29 13:26:04,934 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:26:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:06,636 INFO L93 Difference]: Finished difference Result 1006 states and 1610 transitions. [2020-10-29 13:26:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:06,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-29 13:26:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:06,644 INFO L225 Difference]: With dead ends: 1006 [2020-10-29 13:26:06,644 INFO L226 Difference]: Without dead ends: 759 [2020-10-29 13:26:06,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-29 13:26:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2020-10-29 13:26:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-10-29 13:26:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1214 transitions. [2020-10-29 13:26:06,717 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1214 transitions. Word has length 97 [2020-10-29 13:26:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 1214 transitions. [2020-10-29 13:26:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1214 transitions. [2020-10-29 13:26:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:26:06,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:06,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:06,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:26:06,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:06,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1105424660, now seen corresponding path program 1 times [2020-10-29 13:26:06,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:06,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352709687] [2020-10-29 13:26:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:11,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:11,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:26:11,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:26:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 13:26:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:12,060 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:12,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:12,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:26:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:12,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:12,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352709687] [2020-10-29 13:26:12,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:12,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:12,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169264474] [2020-10-29 13:26:12,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:12,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:12,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:12,114 INFO L87 Difference]: Start difference. First operand 756 states and 1214 transitions. Second operand 4 states. [2020-10-29 13:26:13,517 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:26:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:13,533 INFO L93 Difference]: Finished difference Result 1816 states and 2902 transitions. [2020-10-29 13:26:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:13,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-29 13:26:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:13,546 INFO L225 Difference]: With dead ends: 1816 [2020-10-29 13:26:13,547 INFO L226 Difference]: Without dead ends: 1321 [2020-10-29 13:26:13,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:13,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-29 13:26:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1282. [2020-10-29 13:26:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-10-29 13:26:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2050 transitions. [2020-10-29 13:26:13,639 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2050 transitions. Word has length 97 [2020-10-29 13:26:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:13,640 INFO L481 AbstractCegarLoop]: Abstraction has 1282 states and 2050 transitions. [2020-10-29 13:26:13,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2050 transitions. [2020-10-29 13:26:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:26:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:13,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:13,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:26:13,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -735287838, now seen corresponding path program 1 times [2020-10-29 13:26:13,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:13,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436041623] [2020-10-29 13:26:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:18,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:18,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:26:18,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:26:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:26:18,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:18,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:18,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:18,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 13:26:18,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:26:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:19,081 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:26:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:19,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:19,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436041623] [2020-10-29 13:26:19,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:19,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457579228] [2020-10-29 13:26:19,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:19,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:19,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:19,163 INFO L87 Difference]: Start difference. First operand 1282 states and 2050 transitions. Second operand 4 states. [2020-10-29 13:26:19,497 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:26:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:20,798 INFO L93 Difference]: Finished difference Result 2814 states and 4480 transitions. [2020-10-29 13:26:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:20,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-29 13:26:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:20,814 INFO L225 Difference]: With dead ends: 2814 [2020-10-29 13:26:20,814 INFO L226 Difference]: Without dead ends: 2229 [2020-10-29 13:26:20,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2020-10-29 13:26:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2162. [2020-10-29 13:26:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2162 states. [2020-10-29 13:26:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3430 transitions. [2020-10-29 13:26:20,964 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3430 transitions. Word has length 98 [2020-10-29 13:26:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:20,964 INFO L481 AbstractCegarLoop]: Abstraction has 2162 states and 3430 transitions. [2020-10-29 13:26:20,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3430 transitions. [2020-10-29 13:26:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:26:20,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:20,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:26:20,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1750025561, now seen corresponding path program 1 times [2020-10-29 13:26:20,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100766361] [2020-10-29 13:26:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:26,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:26:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:26:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:26,335 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:26,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:26,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:26:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:26,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100766361] [2020-10-29 13:26:26,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:26,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:26,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678439578] [2020-10-29 13:26:26,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:26,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:26,415 INFO L87 Difference]: Start difference. First operand 2162 states and 3430 transitions. Second operand 4 states. [2020-10-29 13:26:26,631 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:26:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:28,237 INFO L93 Difference]: Finished difference Result 5720 states and 9038 transitions. [2020-10-29 13:26:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:28,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-29 13:26:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:28,261 INFO L225 Difference]: With dead ends: 5720 [2020-10-29 13:26:28,261 INFO L226 Difference]: Without dead ends: 4105 [2020-10-29 13:26:28,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-29 13:26:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3974. [2020-10-29 13:26:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3974 states. [2020-10-29 13:26:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 6254 transitions. [2020-10-29 13:26:28,536 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 6254 transitions. Word has length 99 [2020-10-29 13:26:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:28,537 INFO L481 AbstractCegarLoop]: Abstraction has 3974 states and 6254 transitions. [2020-10-29 13:26:28,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 6254 transitions. [2020-10-29 13:26:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:26:28,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:28,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:28,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:26:28,548 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:28,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:28,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1815614345, now seen corresponding path program 1 times [2020-10-29 13:26:28,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:28,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406187982] [2020-10-29 13:26:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:33,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:33,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 13:26:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 13:26:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:33,885 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:33,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:33,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:33,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:26:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:33,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:33,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406187982] [2020-10-29 13:26:33,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:33,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:33,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624905800] [2020-10-29 13:26:33,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:33,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:33,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:33,940 INFO L87 Difference]: Start difference. First operand 3974 states and 6254 transitions. Second operand 4 states. [2020-10-29 13:26:34,203 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:26:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:35,901 INFO L93 Difference]: Finished difference Result 10320 states and 16186 transitions. [2020-10-29 13:26:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:35,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-29 13:26:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:35,946 INFO L225 Difference]: With dead ends: 10320 [2020-10-29 13:26:35,947 INFO L226 Difference]: Without dead ends: 7541 [2020-10-29 13:26:35,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7541 states. [2020-10-29 13:26:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7541 to 7282. [2020-10-29 13:26:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7282 states. [2020-10-29 13:26:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 11358 transitions. [2020-10-29 13:26:36,406 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 11358 transitions. Word has length 100 [2020-10-29 13:26:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:36,408 INFO L481 AbstractCegarLoop]: Abstraction has 7282 states and 11358 transitions. [2020-10-29 13:26:36,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 11358 transitions. [2020-10-29 13:26:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:26:36,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:36,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:36,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:26:36,427 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1185747678, now seen corresponding path program 1 times [2020-10-29 13:26:36,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:36,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859550971] [2020-10-29 13:26:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:41,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:26:41,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:26:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:26:41,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:41,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 13:26:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:26:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:41,758 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:41,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:41,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:41,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:41,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859550971] [2020-10-29 13:26:41,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:41,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:41,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503403161] [2020-10-29 13:26:41,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:41,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:41,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:41,826 INFO L87 Difference]: Start difference. First operand 7282 states and 11358 transitions. Second operand 4 states. [2020-10-29 13:26:42,100 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:26:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:43,884 INFO L93 Difference]: Finished difference Result 17816 states and 27698 transitions. [2020-10-29 13:26:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:43,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-29 13:26:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:43,951 INFO L225 Difference]: With dead ends: 17816 [2020-10-29 13:26:43,952 INFO L226 Difference]: Without dead ends: 13541 [2020-10-29 13:26:43,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2020-10-29 13:26:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 13026. [2020-10-29 13:26:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13026 states. [2020-10-29 13:26:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13026 states to 13026 states and 20094 transitions. [2020-10-29 13:26:44,745 INFO L78 Accepts]: Start accepts. Automaton has 13026 states and 20094 transitions. Word has length 101 [2020-10-29 13:26:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:44,745 INFO L481 AbstractCegarLoop]: Abstraction has 13026 states and 20094 transitions. [2020-10-29 13:26:44,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13026 states and 20094 transitions. [2020-10-29 13:26:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:26:44,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:44,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:44,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:26:44,781 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1355391381, now seen corresponding path program 1 times [2020-10-29 13:26:44,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:44,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346780450] [2020-10-29 13:26:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:44,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:26:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:46,661 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:46,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346780450] [2020-10-29 13:26:46,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:46,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:46,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721351576] [2020-10-29 13:26:46,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:26:46,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:46,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:26:46,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:46,728 INFO L87 Difference]: Start difference. First operand 13026 states and 20094 transitions. Second operand 5 states. [2020-10-29 13:26:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:48,377 INFO L93 Difference]: Finished difference Result 19013 states and 29152 transitions. [2020-10-29 13:26:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:48,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-29 13:26:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:48,412 INFO L225 Difference]: With dead ends: 19013 [2020-10-29 13:26:48,412 INFO L226 Difference]: Without dead ends: 13026 [2020-10-29 13:26:48,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13026 states. [2020-10-29 13:26:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13026 to 13026. [2020-10-29 13:26:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13026 states. [2020-10-29 13:26:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13026 states to 13026 states and 19710 transitions. [2020-10-29 13:26:49,336 INFO L78 Accepts]: Start accepts. Automaton has 13026 states and 19710 transitions. Word has length 102 [2020-10-29 13:26:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:49,336 INFO L481 AbstractCegarLoop]: Abstraction has 13026 states and 19710 transitions. [2020-10-29 13:26:49,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:26:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13026 states and 19710 transitions. [2020-10-29 13:26:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:26:49,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:49,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:49,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:26:49,373 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:49,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:49,373 INFO L82 PathProgramCache]: Analyzing trace with hash -952236781, now seen corresponding path program 1 times [2020-10-29 13:26:49,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:49,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697944212] [2020-10-29 13:26:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:49,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4289 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 13:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 13:26:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:53,945 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:26:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:53,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:26:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:53,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697944212] [2020-10-29 13:26:53,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:53,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:26:53,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714974002] [2020-10-29 13:26:53,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:26:53,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:53,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:26:53,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:26:53,998 INFO L87 Difference]: Start difference. First operand 13026 states and 19710 transitions. Second operand 4 states. [2020-10-29 13:26:54,234 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:56,320 INFO L93 Difference]: Finished difference Result 28936 states and 43522 transitions. [2020-10-29 13:26:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:26:56,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-29 13:26:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:56,388 INFO L225 Difference]: With dead ends: 28936 [2020-10-29 13:26:56,388 INFO L226 Difference]: Without dead ends: 23205 [2020-10-29 13:26:56,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:26:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23205 states. [2020-10-29 13:26:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23205 to 18242. [2020-10-29 13:26:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18242 states. [2020-10-29 13:26:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18242 states to 18242 states and 27358 transitions. [2020-10-29 13:26:57,757 INFO L78 Accepts]: Start accepts. Automaton has 18242 states and 27358 transitions. Word has length 104 [2020-10-29 13:26:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:57,758 INFO L481 AbstractCegarLoop]: Abstraction has 18242 states and 27358 transitions. [2020-10-29 13:26:57,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:26:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 18242 states and 27358 transitions. [2020-10-29 13:26:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:26:57,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:57,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:57,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:26:57,810 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:57,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1330860006, now seen corresponding path program 1 times [2020-10-29 13:26:57,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:57,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365977843] [2020-10-29 13:26:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 13:27:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:27:02,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:03,089 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:27:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:03,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:03,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:27:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:03,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:03,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365977843] [2020-10-29 13:27:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:03,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:27:03,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850746119] [2020-10-29 13:27:03,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:27:03,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:03,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:27:03,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:27:03,136 INFO L87 Difference]: Start difference. First operand 18242 states and 27358 transitions. Second operand 4 states. [2020-10-29 13:27:05,526 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:06,003 INFO L93 Difference]: Finished difference Result 38394 states and 57214 transitions. [2020-10-29 13:27:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:27:06,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-29 13:27:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:06,108 INFO L225 Difference]: With dead ends: 38394 [2020-10-29 13:27:06,108 INFO L226 Difference]: Without dead ends: 25547 [2020-10-29 13:27:06,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:27:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25547 states. [2020-10-29 13:27:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25547 to 25541. [2020-10-29 13:27:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25541 states. [2020-10-29 13:27:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25541 states to 25541 states and 37722 transitions. [2020-10-29 13:27:07,458 INFO L78 Accepts]: Start accepts. Automaton has 25541 states and 37722 transitions. Word has length 106 [2020-10-29 13:27:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:07,458 INFO L481 AbstractCegarLoop]: Abstraction has 25541 states and 37722 transitions. [2020-10-29 13:27:07,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:27:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 25541 states and 37722 transitions. [2020-10-29 13:27:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:27:07,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:07,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:07,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:27:07,485 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:07,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1405522100, now seen corresponding path program 1 times [2020-10-29 13:27:07,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:07,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893318302] [2020-10-29 13:27:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:12,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:12,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:27:12,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:27:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:12,779 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:27:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:12,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893318302] [2020-10-29 13:27:12,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:12,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:27:12,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55804981] [2020-10-29 13:27:12,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:12,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:12,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:12,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:12,821 INFO L87 Difference]: Start difference. First operand 25541 states and 37722 transitions. Second operand 6 states. [2020-10-29 13:27:16,659 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:27:16,907 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:27:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:17,557 INFO L93 Difference]: Finished difference Result 56828 states and 83756 transitions. [2020-10-29 13:27:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:27:17,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-29 13:27:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:17,645 INFO L225 Difference]: With dead ends: 56828 [2020-10-29 13:27:17,645 INFO L226 Difference]: Without dead ends: 35262 [2020-10-29 13:27:17,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:27:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35262 states. [2020-10-29 13:27:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35262 to 25623. [2020-10-29 13:27:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25623 states. [2020-10-29 13:27:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25623 states to 25623 states and 37654 transitions. [2020-10-29 13:27:19,389 INFO L78 Accepts]: Start accepts. Automaton has 25623 states and 37654 transitions. Word has length 108 [2020-10-29 13:27:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:19,389 INFO L481 AbstractCegarLoop]: Abstraction has 25623 states and 37654 transitions. [2020-10-29 13:27:19,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25623 states and 37654 transitions. [2020-10-29 13:27:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:27:19,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:19,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:19,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:27:19,410 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1505758778, now seen corresponding path program 1 times [2020-10-29 13:27:19,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:19,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667357394] [2020-10-29 13:27:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:27:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:24,844 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:27:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:24,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:24,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667357394] [2020-10-29 13:27:24,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:24,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:27:24,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734495182] [2020-10-29 13:27:24,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:27:24,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:24,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:27:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:24,928 INFO L87 Difference]: Start difference. First operand 25623 states and 37654 transitions. Second operand 9 states. [2020-10-29 13:27:25,203 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:30,153 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:27:30,455 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:27:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:33,041 INFO L93 Difference]: Finished difference Result 91059 states and 132936 transitions. [2020-10-29 13:27:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 13:27:33,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-29 13:27:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:33,211 INFO L225 Difference]: With dead ends: 91059 [2020-10-29 13:27:33,212 INFO L226 Difference]: Without dead ends: 68828 [2020-10-29 13:27:33,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-29 13:27:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68828 states. [2020-10-29 13:27:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68828 to 28679. [2020-10-29 13:27:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28679 states. [2020-10-29 13:27:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28679 states to 28679 states and 41578 transitions. [2020-10-29 13:27:35,683 INFO L78 Accepts]: Start accepts. Automaton has 28679 states and 41578 transitions. Word has length 108 [2020-10-29 13:27:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:35,684 INFO L481 AbstractCegarLoop]: Abstraction has 28679 states and 41578 transitions. [2020-10-29 13:27:35,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:27:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28679 states and 41578 transitions. [2020-10-29 13:27:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:27:35,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:35,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:35,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:27:35,714 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:35,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2053106636, now seen corresponding path program 1 times [2020-10-29 13:27:35,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:35,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998902356] [2020-10-29 13:27:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:36,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:40,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:40,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:27:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:27:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:27:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:40,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:27:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 13:27:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:41,090 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:27:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:41,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998902356] [2020-10-29 13:27:41,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:41,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:27:41,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455269092] [2020-10-29 13:27:41,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:27:41,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:41,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:27:41,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:41,170 INFO L87 Difference]: Start difference. First operand 28679 states and 41578 transitions. Second operand 9 states. [2020-10-29 13:27:41,450 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:46,221 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:27:46,539 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:50,423 INFO L93 Difference]: Finished difference Result 99471 states and 143376 transitions. [2020-10-29 13:27:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 13:27:50,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-29 13:27:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:50,555 INFO L225 Difference]: With dead ends: 99471 [2020-10-29 13:27:50,555 INFO L226 Difference]: Without dead ends: 75048 [2020-10-29 13:27:50,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-29 13:27:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75048 states. [2020-10-29 13:27:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75048 to 32891. [2020-10-29 13:27:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32891 states. [2020-10-29 13:27:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32891 states to 32891 states and 47106 transitions. [2020-10-29 13:27:53,669 INFO L78 Accepts]: Start accepts. Automaton has 32891 states and 47106 transitions. Word has length 108 [2020-10-29 13:27:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:53,669 INFO L481 AbstractCegarLoop]: Abstraction has 32891 states and 47106 transitions. [2020-10-29 13:27:53,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:27:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 32891 states and 47106 transitions. [2020-10-29 13:27:53,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:27:53,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:53,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:53,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:27:53,706 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:53,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:53,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2011948042, now seen corresponding path program 1 times [2020-10-29 13:27:53,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:53,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807493982] [2020-10-29 13:27:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:27:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:27:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4282 [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:27:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:58,304 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:27:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:58,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807493982] [2020-10-29 13:27:58,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:58,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:58,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690075415] [2020-10-29 13:27:58,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:27:58,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:27:58,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:27:58,344 INFO L87 Difference]: Start difference. First operand 32891 states and 47106 transitions. Second operand 5 states. [2020-10-29 13:28:04,361 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:28:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:05,484 INFO L93 Difference]: Finished difference Result 91565 states and 130819 transitions. [2020-10-29 13:28:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:28:05,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 13:28:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:05,569 INFO L225 Difference]: With dead ends: 91565 [2020-10-29 13:28:05,570 INFO L226 Difference]: Without dead ends: 64178 [2020-10-29 13:28:05,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64178 states. [2020-10-29 13:28:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64178 to 61400. [2020-10-29 13:28:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61400 states. [2020-10-29 13:28:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61400 states to 61400 states and 87332 transitions. [2020-10-29 13:28:11,331 INFO L78 Accepts]: Start accepts. Automaton has 61400 states and 87332 transitions. Word has length 108 [2020-10-29 13:28:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:11,331 INFO L481 AbstractCegarLoop]: Abstraction has 61400 states and 87332 transitions. [2020-10-29 13:28:11,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:28:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 61400 states and 87332 transitions. [2020-10-29 13:28:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:28:11,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:11,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:11,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:28:11,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1751610831, now seen corresponding path program 1 times [2020-10-29 13:28:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:11,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110054833] [2020-10-29 13:28:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:16,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:16,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:28:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 13:28:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:16,848 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:28:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:16,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:16,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110054833] [2020-10-29 13:28:16,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:16,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:28:16,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359995877] [2020-10-29 13:28:16,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:28:16,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:16,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:28:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:16,901 INFO L87 Difference]: Start difference. First operand 61400 states and 87332 transitions. Second operand 9 states. [2020-10-29 13:28:17,181 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:28:27,694 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:28:28,086 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:28:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:35,060 INFO L93 Difference]: Finished difference Result 220078 states and 311510 transitions. [2020-10-29 13:28:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 13:28:35,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-29 13:28:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:35,645 INFO L225 Difference]: With dead ends: 220078 [2020-10-29 13:28:35,645 INFO L226 Difference]: Without dead ends: 163139 [2020-10-29 13:28:35,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-29 13:28:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163139 states. [2020-10-29 13:28:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163139 to 71468. [2020-10-29 13:28:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71468 states. [2020-10-29 13:28:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71468 states to 71468 states and 100252 transitions. [2020-10-29 13:28:43,781 INFO L78 Accepts]: Start accepts. Automaton has 71468 states and 100252 transitions. Word has length 109 [2020-10-29 13:28:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:43,781 INFO L481 AbstractCegarLoop]: Abstraction has 71468 states and 100252 transitions. [2020-10-29 13:28:43,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:28:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 71468 states and 100252 transitions. [2020-10-29 13:28:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:28:43,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:43,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:43,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:28:43,853 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash -905161417, now seen corresponding path program 1 times [2020-10-29 13:28:43,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:43,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557241700] [2020-10-29 13:28:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:28:48,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:28:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:28:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:48,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:28:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:49,222 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:28:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:49,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557241700] [2020-10-29 13:28:49,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:49,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:28:49,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399314529] [2020-10-29 13:28:49,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:28:49,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:28:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:49,271 INFO L87 Difference]: Start difference. First operand 71468 states and 100252 transitions. Second operand 9 states. [2020-10-29 13:28:49,547 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:04,265 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:29:04,760 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189