/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:41:31,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:41:31,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:41:31,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:41:31,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:41:31,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:41:31,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:41:31,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:41:31,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:41:31,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:41:31,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:41:31,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:41:31,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:41:31,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:41:31,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:41:31,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:41:31,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:41:31,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:41:31,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:41:31,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:41:31,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:41:31,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:41:31,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:41:31,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:41:31,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:41:31,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:41:31,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:41:31,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:41:31,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:41:31,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:41:31,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:41:31,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:41:31,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:41:31,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:41:31,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:41:31,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:41:31,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:41:31,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:41:31,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:41:31,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:41:31,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:41:31,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:41:31,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:41:31,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:41:31,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:41:31,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:41:31,461 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:41:31,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:41:31,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:41:31,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:41:31,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:41:31,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:41:31,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:41:31,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:41:31,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:41:31,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:41:31,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:41:31,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:41:31,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:41:31,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:41:31,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:41:31,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:41:31,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:41:31,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:41:31,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:41:31,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:41:31,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:41:31,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:41:31,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:41:31,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:41:31,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:41:31,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:41:31,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:41:31,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:41:31,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:41:31,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:41:31,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:41:31,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:41:32,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4593b20/64a3ffe0b4d04fda8e8ced239cef31c8/FLAG7a0ff042d [2020-10-28 18:41:32,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:41:32,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:41:32,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4593b20/64a3ffe0b4d04fda8e8ced239cef31c8/FLAG7a0ff042d [2020-10-28 18:41:33,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4593b20/64a3ffe0b4d04fda8e8ced239cef31c8 [2020-10-28 18:41:33,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:41:33,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:41:33,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:41:33,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:41:33,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:41:33,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7500a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33, skipping insertion in model container [2020-10-28 18:41:33,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:41:33,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:41:33,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:41:33,658 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:41:33,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:41:33,897 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:41:33,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33 WrapperNode [2020-10-28 18:41:33,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:41:33,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:41:33,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:41:33,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:41:33,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... [2020-10-28 18:41:33,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:41:33,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:41:33,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:41:33,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:41:33,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:41:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:41:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:41:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:41:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:41:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:41:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:41:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:41:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:41:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:41:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:41:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:41:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:41:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:41:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:41:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:41:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:41:35,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:41:35,566 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:41:35,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:41:35 BoogieIcfgContainer [2020-10-28 18:41:35,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:41:35,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:41:35,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:41:35,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:41:35,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:41:33" (1/3) ... [2020-10-28 18:41:35,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41add18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:41:35, skipping insertion in model container [2020-10-28 18:41:35,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:33" (2/3) ... [2020-10-28 18:41:35,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41add18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:41:35, skipping insertion in model container [2020-10-28 18:41:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:41:35" (3/3) ... [2020-10-28 18:41:35,578 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:41:35,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:41:35,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:41:35,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:41:35,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:41:35,642 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:41:35,642 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:41:35,642 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:41:35,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:41:35,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:41:35,643 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:41:35,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:41:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states. [2020-10-28 18:41:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 18:41:35,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:35,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:35,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:35,695 INFO L82 PathProgramCache]: Analyzing trace with hash 539341397, now seen corresponding path program 1 times [2020-10-28 18:41:35,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:35,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562151454] [2020-10-28 18:41:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:40,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 18:41:40,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:41:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:41:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 18:41:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 18:41:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:41:41,498 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:41:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:41,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 18:41:41,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:41,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:41,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562151454] [2020-10-28 18:41:41,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:41,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:41,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109433129] [2020-10-28 18:41:41,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:41,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:41,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:41,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:41,670 INFO L87 Difference]: Start difference. First operand 263 states. Second operand 4 states. [2020-10-28 18:41:42,025 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:41:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:43,654 INFO L93 Difference]: Finished difference Result 595 states and 962 transitions. [2020-10-28 18:41:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:43,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-28 18:41:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:43,672 INFO L225 Difference]: With dead ends: 595 [2020-10-28 18:41:43,672 INFO L226 Difference]: Without dead ends: 446 [2020-10-28 18:41:43,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-28 18:41:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 435. [2020-10-28 18:41:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-28 18:41:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 704 transitions. [2020-10-28 18:41:43,774 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 704 transitions. Word has length 96 [2020-10-28 18:41:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:43,774 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 704 transitions. [2020-10-28 18:41:43,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 704 transitions. [2020-10-28 18:41:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:41:43,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:43,781 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] [2020-10-28 18:41:43,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:41:43,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash 582574811, now seen corresponding path program 1 times [2020-10-28 18:41:43,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:43,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264166295] [2020-10-28 18:41:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:43,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:48,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:48,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:41:48,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:41:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 18:41:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:48,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:41:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 18:41:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:41:49,206 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:41:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:41:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:49,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:41:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:49,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264166295] [2020-10-28 18:41:49,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:49,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:49,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243223347] [2020-10-28 18:41:49,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:49,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:49,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:49,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:49,315 INFO L87 Difference]: Start difference. First operand 435 states and 704 transitions. Second operand 4 states. [2020-10-28 18:41:49,642 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:41:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:50,872 INFO L93 Difference]: Finished difference Result 893 states and 1430 transitions. [2020-10-28 18:41:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:50,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-28 18:41:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:50,878 INFO L225 Difference]: With dead ends: 893 [2020-10-28 18:41:50,878 INFO L226 Difference]: Without dead ends: 716 [2020-10-28 18:41:50,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-28 18:41:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 697. [2020-10-28 18:41:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 18:41:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1118 transitions. [2020-10-28 18:41:50,987 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1118 transitions. Word has length 97 [2020-10-28 18:41:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:50,990 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1118 transitions. [2020-10-28 18:41:50,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1118 transitions. [2020-10-28 18:41:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 18:41:50,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:50,998 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] [2020-10-28 18:41:50,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:41:50,999 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:51,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1637896527, now seen corresponding path program 1 times [2020-10-28 18:41:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:51,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436442656] [2020-10-28 18:41:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:56,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 18:41:56,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:41:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:41:56,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:56,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 18:41:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:41:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:56,371 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:41:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:56,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436442656] [2020-10-28 18:41:56,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:56,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:56,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052739813] [2020-10-28 18:41:56,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:56,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:56,439 INFO L87 Difference]: Start difference. First operand 697 states and 1118 transitions. Second operand 4 states. [2020-10-28 18:41:56,716 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:41:58,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:58,180 INFO L93 Difference]: Finished difference Result 1663 states and 2646 transitions. [2020-10-28 18:41:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:58,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-28 18:41:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:58,189 INFO L225 Difference]: With dead ends: 1663 [2020-10-28 18:41:58,189 INFO L226 Difference]: Without dead ends: 1264 [2020-10-28 18:41:58,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2020-10-28 18:41:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1229. [2020-10-28 18:41:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-28 18:41:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1954 transitions. [2020-10-28 18:41:58,271 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1954 transitions. Word has length 98 [2020-10-28 18:41:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:58,271 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1954 transitions. [2020-10-28 18:41:58,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1954 transitions. [2020-10-28 18:41:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 18:41:58,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:58,276 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] [2020-10-28 18:41:58,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:41:58,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:58,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1271166145, now seen corresponding path program 1 times [2020-10-28 18:41:58,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:58,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968651629] [2020-10-28 18:41:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 18:42:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:42:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:42:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:03,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 18:42:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:42:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:42:03,621 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:03,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:42:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:03,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:42:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:03,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968651629] [2020-10-28 18:42:03,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:03,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:03,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244259642] [2020-10-28 18:42:03,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:03,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:03,683 INFO L87 Difference]: Start difference. First operand 1229 states and 1954 transitions. Second operand 4 states. [2020-10-28 18:42:04,017 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:05,488 INFO L93 Difference]: Finished difference Result 2691 states and 4254 transitions. [2020-10-28 18:42:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:05,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 18:42:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:05,503 INFO L225 Difference]: With dead ends: 2691 [2020-10-28 18:42:05,503 INFO L226 Difference]: Without dead ends: 2136 [2020-10-28 18:42:05,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:05,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-10-28 18:42:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2069. [2020-10-28 18:42:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-10-28 18:42:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3258 transitions. [2020-10-28 18:42:05,670 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3258 transitions. Word has length 99 [2020-10-28 18:42:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:05,670 INFO L481 AbstractCegarLoop]: Abstraction has 2069 states and 3258 transitions. [2020-10-28 18:42:05,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3258 transitions. [2020-10-28 18:42:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 18:42:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:05,678 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] [2020-10-28 18:42:05,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:42:05,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:05,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1418360848, now seen corresponding path program 1 times [2020-10-28 18:42:05,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:05,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370963939] [2020-10-28 18:42:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 18:42:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:42:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:11,025 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:11,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:11,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:42:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:11,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:11,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370963939] [2020-10-28 18:42:11,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:11,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:11,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646154153] [2020-10-28 18:42:11,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:11,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:11,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:11,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:11,089 INFO L87 Difference]: Start difference. First operand 2069 states and 3258 transitions. Second operand 4 states. [2020-10-28 18:42:11,352 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:42:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:12,964 INFO L93 Difference]: Finished difference Result 5423 states and 8494 transitions. [2020-10-28 18:42:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:12,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 18:42:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:12,988 INFO L225 Difference]: With dead ends: 5423 [2020-10-28 18:42:12,988 INFO L226 Difference]: Without dead ends: 3932 [2020-10-28 18:42:12,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2020-10-28 18:42:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3801. [2020-10-28 18:42:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3801 states. [2020-10-28 18:42:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5930 transitions. [2020-10-28 18:42:13,235 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5930 transitions. Word has length 100 [2020-10-28 18:42:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:13,235 INFO L481 AbstractCegarLoop]: Abstraction has 3801 states and 5930 transitions. [2020-10-28 18:42:13,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5930 transitions. [2020-10-28 18:42:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 18:42:13,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:13,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:13,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:42:13,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:13,247 INFO L82 PathProgramCache]: Analyzing trace with hash -122864932, now seen corresponding path program 1 times [2020-10-28 18:42:13,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:13,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969325410] [2020-10-28 18:42:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:18,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:42:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:42:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:18,612 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:18,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:18,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:18,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969325410] [2020-10-28 18:42:18,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:18,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:18,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800944534] [2020-10-28 18:42:18,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:18,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:18,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:18,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:18,666 INFO L87 Difference]: Start difference. First operand 3801 states and 5930 transitions. Second operand 4 states. [2020-10-28 18:42:18,955 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:42:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:20,490 INFO L93 Difference]: Finished difference Result 9487 states and 14734 transitions. [2020-10-28 18:42:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:20,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 18:42:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:20,530 INFO L225 Difference]: With dead ends: 9487 [2020-10-28 18:42:20,530 INFO L226 Difference]: Without dead ends: 7148 [2020-10-28 18:42:20,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7148 states. [2020-10-28 18:42:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7148 to 6889. [2020-10-28 18:42:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6889 states. [2020-10-28 18:42:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10634 transitions. [2020-10-28 18:42:21,087 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10634 transitions. Word has length 101 [2020-10-28 18:42:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:21,089 INFO L481 AbstractCegarLoop]: Abstraction has 6889 states and 10634 transitions. [2020-10-28 18:42:21,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10634 transitions. [2020-10-28 18:42:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 18:42:21,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:21,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:21,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:42:21,114 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash -894728703, now seen corresponding path program 1 times [2020-10-28 18:42:21,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:21,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081362288] [2020-10-28 18:42:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:42:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:42:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:42:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,471 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:26,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:26,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081362288] [2020-10-28 18:42:26,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:26,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:26,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492934697] [2020-10-28 18:42:26,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:42:26,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:26,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:42:26,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:26,514 INFO L87 Difference]: Start difference. First operand 6889 states and 10634 transitions. Second operand 5 states. [2020-10-28 18:42:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:27,867 INFO L93 Difference]: Finished difference Result 12716 states and 19468 transitions. [2020-10-28 18:42:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:27,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-28 18:42:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:27,901 INFO L225 Difference]: With dead ends: 12716 [2020-10-28 18:42:27,901 INFO L226 Difference]: Without dead ends: 6889 [2020-10-28 18:42:27,915 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 [2020-10-28 18:42:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6889 states. [2020-10-28 18:42:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6889 to 6889. [2020-10-28 18:42:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6889 states. [2020-10-28 18:42:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10442 transitions. [2020-10-28 18:42:28,294 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10442 transitions. Word has length 102 [2020-10-28 18:42:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:28,295 INFO L481 AbstractCegarLoop]: Abstraction has 6889 states and 10442 transitions. [2020-10-28 18:42:28,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:42:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10442 transitions. [2020-10-28 18:42:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:42:28,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:28,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:28,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:42:28,313 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1975877650, now seen corresponding path program 1 times [2020-10-28 18:42:28,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:28,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967605927] [2020-10-28 18:42:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:42:33,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:42:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:42:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:33,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:42:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 18:42:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:33,657 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:33,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:33,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:33,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967605927] [2020-10-28 18:42:33,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:33,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:33,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958280841] [2020-10-28 18:42:33,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:33,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:33,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:33,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:33,709 INFO L87 Difference]: Start difference. First operand 6889 states and 10442 transitions. Second operand 4 states. [2020-10-28 18:42:33,960 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:42:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:35,548 INFO L93 Difference]: Finished difference Result 14390 states and 21594 transitions. [2020-10-28 18:42:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:35,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 18:42:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:35,599 INFO L225 Difference]: With dead ends: 14390 [2020-10-28 18:42:35,600 INFO L226 Difference]: Without dead ends: 11379 [2020-10-28 18:42:35,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2020-10-28 18:42:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 11376. [2020-10-28 18:42:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11376 states. [2020-10-28 18:42:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 16918 transitions. [2020-10-28 18:42:36,361 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 16918 transitions. Word has length 104 [2020-10-28 18:42:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:36,362 INFO L481 AbstractCegarLoop]: Abstraction has 11376 states and 16918 transitions. [2020-10-28 18:42:36,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 16918 transitions. [2020-10-28 18:42:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 18:42:36,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:36,392 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] [2020-10-28 18:42:36,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:42:36,392 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:36,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:36,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1905481306, now seen corresponding path program 1 times [2020-10-28 18:42:36,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:36,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479008929] [2020-10-28 18:42:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:41,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:42:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:41,709 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:41,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:41,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:41,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:41,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479008929] [2020-10-28 18:42:41,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:41,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:41,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109814139] [2020-10-28 18:42:41,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:42:41,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:42:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:41,749 INFO L87 Difference]: Start difference. First operand 11376 states and 16918 transitions. Second operand 5 states. [2020-10-28 18:42:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:43,224 INFO L93 Difference]: Finished difference Result 17011 states and 25304 transitions. [2020-10-28 18:42:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:43,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-28 18:42:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:43,251 INFO L225 Difference]: With dead ends: 17011 [2020-10-28 18:42:43,251 INFO L226 Difference]: Without dead ends: 11250 [2020-10-28 18:42:43,264 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 [2020-10-28 18:42:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2020-10-28 18:42:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 9513. [2020-10-28 18:42:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2020-10-28 18:42:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14090 transitions. [2020-10-28 18:42:43,805 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14090 transitions. Word has length 107 [2020-10-28 18:42:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:43,805 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14090 transitions. [2020-10-28 18:42:43,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:42:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14090 transitions. [2020-10-28 18:42:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 18:42:43,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:43,827 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] [2020-10-28 18:42:43,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:42:43,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1948164288, now seen corresponding path program 1 times [2020-10-28 18:42:43,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:43,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180075886] [2020-10-28 18:42:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 18:42:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 18:42:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:49,118 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:49,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:49,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180075886] [2020-10-28 18:42:49,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:49,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:49,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302456994] [2020-10-28 18:42:49,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:49,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:49,165 INFO L87 Difference]: Start difference. First operand 9513 states and 14090 transitions. Second operand 4 states. [2020-10-28 18:42:51,181 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:42:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:51,214 INFO L93 Difference]: Finished difference Result 22543 states and 33262 transitions. [2020-10-28 18:42:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:51,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-28 18:42:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:51,248 INFO L225 Difference]: With dead ends: 22543 [2020-10-28 18:42:51,248 INFO L226 Difference]: Without dead ends: 14092 [2020-10-28 18:42:51,267 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 [2020-10-28 18:42:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14092 states. [2020-10-28 18:42:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14092 to 14089. [2020-10-28 18:42:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14089 states. [2020-10-28 18:42:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14089 states to 14089 states and 20522 transitions. [2020-10-28 18:42:51,977 INFO L78 Accepts]: Start accepts. Automaton has 14089 states and 20522 transitions. Word has length 108 [2020-10-28 18:42:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:51,977 INFO L481 AbstractCegarLoop]: Abstraction has 14089 states and 20522 transitions. [2020-10-28 18:42:51,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14089 states and 20522 transitions. [2020-10-28 18:42:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 18:42:52,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:52,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:52,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:42:52,006 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:52,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1964600903, now seen corresponding path program 1 times [2020-10-28 18:42:52,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:52,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308847234] [2020-10-28 18:42:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:57,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:57,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 18:42:57,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:42:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:42:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:57,329 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:57,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:57,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:57,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308847234] [2020-10-28 18:42:57,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:57,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:57,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920570311] [2020-10-28 18:42:57,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:42:57,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:57,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:42:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:57,383 INFO L87 Difference]: Start difference. First operand 14089 states and 20522 transitions. Second operand 5 states. [2020-10-28 18:42:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:58,960 INFO L93 Difference]: Finished difference Result 28132 states and 40958 transitions. [2020-10-28 18:42:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:42:58,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-28 18:42:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:58,989 INFO L225 Difference]: With dead ends: 28132 [2020-10-28 18:42:58,990 INFO L226 Difference]: Without dead ends: 14089 [2020-10-28 18:42:59,010 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 [2020-10-28 18:42:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14089 states. [2020-10-28 18:42:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14089 to 14089. [2020-10-28 18:42:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14089 states. [2020-10-28 18:42:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14089 states to 14089 states and 20482 transitions. [2020-10-28 18:42:59,899 INFO L78 Accepts]: Start accepts. Automaton has 14089 states and 20482 transitions. Word has length 110 [2020-10-28 18:42:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:59,899 INFO L481 AbstractCegarLoop]: Abstraction has 14089 states and 20482 transitions. [2020-10-28 18:42:59,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:42:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14089 states and 20482 transitions. [2020-10-28 18:42:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:42:59,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:59,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:59,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:42:59,925 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:59,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1814233060, now seen corresponding path program 1 times [2020-10-28 18:42:59,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:59,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942759775] [2020-10-28 18:42:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 18:43:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:43:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:04,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:43:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 18:43:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:05,215 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:05,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:05,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:05,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942759775] [2020-10-28 18:43:05,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:05,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:05,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15106463] [2020-10-28 18:43:05,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:05,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:05,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:05,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:05,258 INFO L87 Difference]: Start difference. First operand 14089 states and 20482 transitions. Second operand 4 states. [2020-10-28 18:43:05,529 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:07,047 INFO L93 Difference]: Finished difference Result 25103 states and 36678 transitions. [2020-10-28 18:43:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:07,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 18:43:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:07,079 INFO L225 Difference]: With dead ends: 25103 [2020-10-28 18:43:07,080 INFO L226 Difference]: Without dead ends: 13298 [2020-10-28 18:43:07,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13298 states. [2020-10-28 18:43:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 13295. [2020-10-28 18:43:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13295 states. [2020-10-28 18:43:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13295 states to 13295 states and 19434 transitions. [2020-10-28 18:43:08,104 INFO L78 Accepts]: Start accepts. Automaton has 13295 states and 19434 transitions. Word has length 149 [2020-10-28 18:43:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:08,104 INFO L481 AbstractCegarLoop]: Abstraction has 13295 states and 19434 transitions. [2020-10-28 18:43:08,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13295 states and 19434 transitions. [2020-10-28 18:43:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 18:43:08,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:08,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:08,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:43:08,123 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash -660504154, now seen corresponding path program 1 times [2020-10-28 18:43:08,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:08,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105955701] [2020-10-28 18:43:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 18:43:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:13,421 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:13,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105955701] [2020-10-28 18:43:13,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:13,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:13,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495171424] [2020-10-28 18:43:13,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:13,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:13,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:13,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:13,481 INFO L87 Difference]: Start difference. First operand 13295 states and 19434 transitions. Second operand 4 states. [2020-10-28 18:43:13,727 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:43:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:15,609 INFO L93 Difference]: Finished difference Result 25845 states and 37998 transitions. [2020-10-28 18:43:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:15,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-28 18:43:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:15,635 INFO L225 Difference]: With dead ends: 25845 [2020-10-28 18:43:15,635 INFO L226 Difference]: Without dead ends: 14514 [2020-10-28 18:43:15,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14514 states. [2020-10-28 18:43:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14514 to 14511. [2020-10-28 18:43:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14511 states. [2020-10-28 18:43:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14511 states to 14511 states and 21226 transitions. [2020-10-28 18:43:16,306 INFO L78 Accepts]: Start accepts. Automaton has 14511 states and 21226 transitions. Word has length 150 [2020-10-28 18:43:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:16,306 INFO L481 AbstractCegarLoop]: Abstraction has 14511 states and 21226 transitions. [2020-10-28 18:43:16,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 14511 states and 21226 transitions. [2020-10-28 18:43:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 18:43:16,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:16,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:16,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:43:16,320 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash 435138790, now seen corresponding path program 1 times [2020-10-28 18:43:16,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:16,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728739815] [2020-10-28 18:43:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 18:43:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:43:21,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:21,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:43:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:43:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:21,725 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:21,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:21,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728739815] [2020-10-28 18:43:21,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:21,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:21,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894955694] [2020-10-28 18:43:21,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:21,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:21,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:21,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:21,787 INFO L87 Difference]: Start difference. First operand 14511 states and 21226 transitions. Second operand 4 states. [2020-10-28 18:43:22,040 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:23,542 INFO L93 Difference]: Finished difference Result 26037 states and 38158 transitions. [2020-10-28 18:43:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:23,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-28 18:43:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:23,567 INFO L225 Difference]: With dead ends: 26037 [2020-10-28 18:43:23,567 INFO L226 Difference]: Without dead ends: 13346 [2020-10-28 18:43:23,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13346 states. [2020-10-28 18:43:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 13343. [2020-10-28 18:43:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13343 states. [2020-10-28 18:43:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 19514 transitions. [2020-10-28 18:43:24,254 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 19514 transitions. Word has length 150 [2020-10-28 18:43:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:24,255 INFO L481 AbstractCegarLoop]: Abstraction has 13343 states and 19514 transitions. [2020-10-28 18:43:24,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 19514 transitions. [2020-10-28 18:43:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:43:24,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:24,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:24,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:43:24,268 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1659408512, now seen corresponding path program 1 times [2020-10-28 18:43:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:24,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661540135] [2020-10-28 18:43:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:43:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:43:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:43:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:29,556 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:29,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:29,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:29,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:29,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661540135] [2020-10-28 18:43:29,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:29,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:29,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395802738] [2020-10-28 18:43:29,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:29,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:29,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:29,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:29,619 INFO L87 Difference]: Start difference. First operand 13343 states and 19514 transitions. Second operand 4 states. [2020-10-28 18:43:29,895 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:31,270 INFO L93 Difference]: Finished difference Result 25061 states and 36750 transitions. [2020-10-28 18:43:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:31,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-28 18:43:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:31,285 INFO L225 Difference]: With dead ends: 25061 [2020-10-28 18:43:31,285 INFO L226 Difference]: Without dead ends: 12882 [2020-10-28 18:43:31,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12882 states. [2020-10-28 18:43:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12882 to 12879. [2020-10-28 18:43:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12879 states. [2020-10-28 18:43:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12879 states to 12879 states and 18850 transitions. [2020-10-28 18:43:31,868 INFO L78 Accepts]: Start accepts. Automaton has 12879 states and 18850 transitions. Word has length 151 [2020-10-28 18:43:31,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:31,868 INFO L481 AbstractCegarLoop]: Abstraction has 12879 states and 18850 transitions. [2020-10-28 18:43:31,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 12879 states and 18850 transitions. [2020-10-28 18:43:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:43:31,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:31,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:31,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:43:31,883 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2102284980, now seen corresponding path program 1 times [2020-10-28 18:43:31,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:31,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718463279] [2020-10-28 18:43:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:31,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:43:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:43:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:37,196 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:37,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:37,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718463279] [2020-10-28 18:43:37,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:37,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:37,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979843942] [2020-10-28 18:43:37,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:37,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:37,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:37,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:37,244 INFO L87 Difference]: Start difference. First operand 12879 states and 18850 transitions. Second operand 4 states. [2020-10-28 18:43:37,543 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:39,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:39,163 INFO L93 Difference]: Finished difference Result 24501 states and 35942 transitions. [2020-10-28 18:43:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:39,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:43:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:39,179 INFO L225 Difference]: With dead ends: 24501 [2020-10-28 18:43:39,180 INFO L226 Difference]: Without dead ends: 12566 [2020-10-28 18:43:39,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12566 states. [2020-10-28 18:43:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12566 to 12563. [2020-10-28 18:43:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12563 states. [2020-10-28 18:43:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12563 states to 12563 states and 18390 transitions. [2020-10-28 18:43:39,850 INFO L78 Accepts]: Start accepts. Automaton has 12563 states and 18390 transitions. Word has length 152 [2020-10-28 18:43:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:39,850 INFO L481 AbstractCegarLoop]: Abstraction has 12563 states and 18390 transitions. [2020-10-28 18:43:39,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12563 states and 18390 transitions. [2020-10-28 18:43:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 18:43:39,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:39,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:39,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:43:39,865 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash 272720887, now seen corresponding path program 1 times [2020-10-28 18:43:39,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:39,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078826085] [2020-10-28 18:43:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 18:43:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:43:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:45,209 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:43:45,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:45,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078826085] [2020-10-28 18:43:45,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:45,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:45,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092016638] [2020-10-28 18:43:45,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:45,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:45,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:45,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:45,258 INFO L87 Difference]: Start difference. First operand 12563 states and 18390 transitions. Second operand 4 states. [2020-10-28 18:43:45,559 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:47,259 INFO L93 Difference]: Finished difference Result 24257 states and 35602 transitions. [2020-10-28 18:43:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:47,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-28 18:43:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:47,279 INFO L225 Difference]: With dead ends: 24257 [2020-10-28 18:43:47,280 INFO L226 Difference]: Without dead ends: 12456 [2020-10-28 18:43:47,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12456 states. [2020-10-28 18:43:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12456 to 12453. [2020-10-28 18:43:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12453 states. [2020-10-28 18:43:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12453 states to 12453 states and 18236 transitions. [2020-10-28 18:43:47,938 INFO L78 Accepts]: Start accepts. Automaton has 12453 states and 18236 transitions. Word has length 153 [2020-10-28 18:43:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:47,938 INFO L481 AbstractCegarLoop]: Abstraction has 12453 states and 18236 transitions. [2020-10-28 18:43:47,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 12453 states and 18236 transitions. [2020-10-28 18:43:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 18:43:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:47,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:47,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:43:47,949 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1850821652, now seen corresponding path program 1 times [2020-10-28 18:43:47,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:47,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981725102] [2020-10-28 18:43:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 18:43:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:43:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:43:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:52,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:43:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:43:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:53,274 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:53,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981725102] [2020-10-28 18:43:53,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:53,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:53,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396949241] [2020-10-28 18:43:53,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:53,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:53,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:53,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:53,318 INFO L87 Difference]: Start difference. First operand 12453 states and 18236 transitions. Second operand 4 states. [2020-10-28 18:43:53,604 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:55,284 INFO L93 Difference]: Finished difference Result 24159 states and 35468 transitions. [2020-10-28 18:43:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:55,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 18:43:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:55,299 INFO L225 Difference]: With dead ends: 24159 [2020-10-28 18:43:55,299 INFO L226 Difference]: Without dead ends: 12407 [2020-10-28 18:43:55,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12407 states. [2020-10-28 18:43:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12407 to 12404. [2020-10-28 18:43:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12404 states. [2020-10-28 18:43:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12404 states to 12404 states and 18169 transitions. [2020-10-28 18:43:55,948 INFO L78 Accepts]: Start accepts. Automaton has 12404 states and 18169 transitions. Word has length 154 [2020-10-28 18:43:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:55,949 INFO L481 AbstractCegarLoop]: Abstraction has 12404 states and 18169 transitions. [2020-10-28 18:43:55,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 12404 states and 18169 transitions. [2020-10-28 18:43:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:43:55,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:55,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:55,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:43:55,960 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash 113543908, now seen corresponding path program 1 times [2020-10-28 18:43:55,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:55,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607306404] [2020-10-28 18:43:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 18:44:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:01,273 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:01,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:01,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607306404] [2020-10-28 18:44:01,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:01,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:01,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167726035] [2020-10-28 18:44:01,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:01,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:01,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:01,314 INFO L87 Difference]: Start difference. First operand 12404 states and 18169 transitions. Second operand 4 states. [2020-10-28 18:44:01,597 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:44:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:03,868 INFO L93 Difference]: Finished difference Result 36206 states and 53038 transitions. [2020-10-28 18:44:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:44:03,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:44:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:03,900 INFO L225 Difference]: With dead ends: 36206 [2020-10-28 18:44:03,900 INFO L226 Difference]: Without dead ends: 24563 [2020-10-28 18:44:03,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24563 states. [2020-10-28 18:44:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24563 to 24560. [2020-10-28 18:44:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24560 states. [2020-10-28 18:44:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24560 states to 24560 states and 35703 transitions. [2020-10-28 18:44:05,184 INFO L78 Accepts]: Start accepts. Automaton has 24560 states and 35703 transitions. Word has length 155 [2020-10-28 18:44:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:05,184 INFO L481 AbstractCegarLoop]: Abstraction has 24560 states and 35703 transitions. [2020-10-28 18:44:05,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:44:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 24560 states and 35703 transitions. [2020-10-28 18:44:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:44:05,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:05,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:44:05,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 18:44:05,212 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash 662817865, now seen corresponding path program 1 times [2020-10-28 18:44:05,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:05,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816836257] [2020-10-28 18:44:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:10,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:10,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 18:44:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:10,545 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:10,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:10,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:10,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:10,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:10,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:10,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816836257] [2020-10-28 18:44:10,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:10,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:10,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563454735] [2020-10-28 18:44:10,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:10,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:10,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:10,592 INFO L87 Difference]: Start difference. First operand 24560 states and 35703 transitions. Second operand 4 states. [2020-10-28 18:44:13,856 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 18:44:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:14,088 INFO L93 Difference]: Finished difference Result 71959 states and 104618 transitions. [2020-10-28 18:44:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:44:14,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:44:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:14,146 INFO L225 Difference]: With dead ends: 71959 [2020-10-28 18:44:14,146 INFO L226 Difference]: Without dead ends: 48780 [2020-10-28 18:44:14,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48780 states. [2020-10-28 18:44:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48780 to 48777. [2020-10-28 18:44:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48777 states. [2020-10-28 18:44:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48777 states to 48777 states and 70526 transitions. [2020-10-28 18:44:17,145 INFO L78 Accepts]: Start accepts. Automaton has 48777 states and 70526 transitions. Word has length 155 [2020-10-28 18:44:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:17,145 INFO L481 AbstractCegarLoop]: Abstraction has 48777 states and 70526 transitions. [2020-10-28 18:44:17,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:44:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 48777 states and 70526 transitions. [2020-10-28 18:44:17,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:44:17,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:17,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:44:17,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 18:44:17,189 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:17,189 INFO L82 PathProgramCache]: Analyzing trace with hash 987140644, now seen corresponding path program 1 times [2020-10-28 18:44:17,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:17,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562948867] [2020-10-28 18:44:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:22,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 18:44:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 18:44:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:22,626 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:22,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562948867] [2020-10-28 18:44:22,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:22,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:22,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332973521] [2020-10-28 18:44:22,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:22,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:22,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:22,684 INFO L87 Difference]: Start difference. First operand 48777 states and 70526 transitions. Second operand 4 states. [2020-10-28 18:44:24,860 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:44:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:25,626 INFO L93 Difference]: Finished difference Result 80047 states and 116174 transitions. [2020-10-28 18:44:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:44:25,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:44:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:25,666 INFO L225 Difference]: With dead ends: 80047 [2020-10-28 18:44:25,666 INFO L226 Difference]: Without dead ends: 34122 [2020-10-28 18:44:25,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34122 states. [2020-10-28 18:44:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34122 to 32859. [2020-10-28 18:44:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32859 states. [2020-10-28 18:44:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32859 states to 32859 states and 47516 transitions. [2020-10-28 18:44:27,670 INFO L78 Accepts]: Start accepts. Automaton has 32859 states and 47516 transitions. Word has length 155 [2020-10-28 18:44:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:27,671 INFO L481 AbstractCegarLoop]: Abstraction has 32859 states and 47516 transitions. [2020-10-28 18:44:27,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:44:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand 32859 states and 47516 transitions. [2020-10-28 18:44:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:44:27,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:27,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:44:27,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 18:44:27,692 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash -129232863, now seen corresponding path program 1 times [2020-10-28 18:44:27,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:27,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011442648] [2020-10-28 18:44:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:27,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:32,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:32,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:44:32,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:44:32,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:32,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 18:44:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:44:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:32,999 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:33,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:33,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011442648] [2020-10-28 18:44:33,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:33,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:33,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019856639] [2020-10-28 18:44:33,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:33,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:33,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:33,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:33,042 INFO L87 Difference]: Start difference. First operand 32859 states and 47516 transitions. Second operand 4 states. [2020-10-28 18:44:33,317 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:44:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:37,629 INFO L93 Difference]: Finished difference Result 95965 states and 138548 transitions. [2020-10-28 18:44:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:44:37,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:44:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:37,712 INFO L225 Difference]: With dead ends: 95965 [2020-10-28 18:44:37,713 INFO L226 Difference]: Without dead ends: 65126 [2020-10-28 18:44:37,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65126 states. [2020-10-28 18:44:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65126 to 65123. [2020-10-28 18:44:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65123 states. [2020-10-28 18:44:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65123 states to 65123 states and 93516 transitions. [2020-10-28 18:44:41,930 INFO L78 Accepts]: Start accepts. Automaton has 65123 states and 93516 transitions. Word has length 155 [2020-10-28 18:44:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:41,930 INFO L481 AbstractCegarLoop]: Abstraction has 65123 states and 93516 transitions. [2020-10-28 18:44:41,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:44:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 65123 states and 93516 transitions. [2020-10-28 18:44:41,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:44:41,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:41,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:44:41,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 18:44:41,974 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:41,975 INFO L82 PathProgramCache]: Analyzing trace with hash 705969628, now seen corresponding path program 1 times [2020-10-28 18:44:41,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:41,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163063495] [2020-10-28 18:44:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 18:44:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:47,308 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:47,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:47,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163063495] [2020-10-28 18:44:47,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:47,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:47,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741596869] [2020-10-28 18:44:47,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:47,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:47,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:47,351 INFO L87 Difference]: Start difference. First operand 65123 states and 93516 transitions. Second operand 4 states. [2020-10-28 18:44:49,566 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:44:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:50,463 INFO L93 Difference]: Finished difference Result 94789 states and 136124 transitions. [2020-10-28 18:44:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:44:50,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:44:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:50,505 INFO L225 Difference]: With dead ends: 94789 [2020-10-28 18:44:50,505 INFO L226 Difference]: Without dead ends: 32694 [2020-10-28 18:44:50,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32694 states. [2020-10-28 18:44:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32694 to 32691. [2020-10-28 18:44:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32691 states. [2020-10-28 18:44:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32691 states to 32691 states and 46428 transitions. [2020-10-28 18:44:52,781 INFO L78 Accepts]: Start accepts. Automaton has 32691 states and 46428 transitions. Word has length 155 [2020-10-28 18:44:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:52,781 INFO L481 AbstractCegarLoop]: Abstraction has 32691 states and 46428 transitions. [2020-10-28 18:44:52,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:44:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32691 states and 46428 transitions. [2020-10-28 18:44:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:44:52,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:52,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:44:52,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 18:44:52,800 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1050678139, now seen corresponding path program 1 times [2020-10-28 18:44:52,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:52,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206519682] [2020-10-28 18:44:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:57,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:44:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:58,107 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:58,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:44:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206519682] [2020-10-28 18:44:58,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:58,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:44:58,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081327410] [2020-10-28 18:44:58,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:44:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:58,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:44:58,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:44:58,151 INFO L87 Difference]: Start difference. First operand 32691 states and 46428 transitions. Second operand 4 states. [2020-10-28 18:44:59,880 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:45:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:45:00,451 INFO L93 Difference]: Finished difference Result 47469 states and 67412 transitions. [2020-10-28 18:45:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:45:00,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 18:45:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:45:00,472 INFO L225 Difference]: With dead ends: 47469 [2020-10-28 18:45:00,473 INFO L226 Difference]: Without dead ends: 16670 [2020-10-28 18:45:00,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:45:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16670 states. [2020-10-28 18:45:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16670 to 16667. [2020-10-28 18:45:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16667 states. [2020-10-28 18:45:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16667 states to 16667 states and 23412 transitions. [2020-10-28 18:45:01,551 INFO L78 Accepts]: Start accepts. Automaton has 16667 states and 23412 transitions. Word has length 155 [2020-10-28 18:45:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:45:01,551 INFO L481 AbstractCegarLoop]: Abstraction has 16667 states and 23412 transitions. [2020-10-28 18:45:01,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:45:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16667 states and 23412 transitions. [2020-10-28 18:45:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:45:01,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:01,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:01,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 18:45:01,561 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash -279540067, now seen corresponding path program 1 times [2020-10-28 18:45:01,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:01,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187095241] [2020-10-28 18:45:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:01,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:06,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 18:45:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:06,877 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:45:06,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:06,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:45:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:45:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:45:06,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187095241] [2020-10-28 18:45:06,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:06,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:45:06,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049197474] [2020-10-28 18:45:06,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:45:06,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:06,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:45:06,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:45:06,929 INFO L87 Difference]: Start difference. First operand 16667 states and 23412 transitions. Second operand 4 states. [2020-10-28 18:45:07,197 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193