/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:23:03,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:23:03,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:23:03,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:23:03,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:23:03,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:23:03,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:23:03,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:23:03,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:23:03,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:23:03,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:23:03,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:23:03,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:23:03,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:23:03,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:23:03,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:23:03,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:23:03,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:23:03,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:23:03,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:23:03,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:23:03,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:23:03,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:23:03,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:23:03,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:23:03,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:23:03,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:23:03,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:23:03,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:23:03,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:23:03,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:23:03,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:23:03,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:23:03,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:23:03,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:23:03,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:23:03,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:23:03,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:23:03,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:23:03,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:23:03,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:23:03,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:23:03,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:23:03,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:23:03,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:23:03,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:23:03,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:23:03,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:23:03,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:23:03,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:23:03,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:23:03,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:23:03,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:23:03,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:23:03,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:23:03,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:23:03,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:23:03,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:23:03,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:23:03,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:23:03,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:23:03,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:23:03,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:23:03,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:23:03,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:23:03,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:23:03,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:23:03,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:23:03,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:23:03,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:23:03,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:23:03,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:23:03,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:23:03,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:23:03,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:23:03,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:23:03,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:23:03,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:23:03,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3ca806d/0c81350a5aec41ac8eb9f760d49ea2c2/FLAG879b586d7 [2020-10-28 00:23:04,705 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:23:04,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:23:04,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3ca806d/0c81350a5aec41ac8eb9f760d49ea2c2/FLAG879b586d7 [2020-10-28 00:23:05,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3ca806d/0c81350a5aec41ac8eb9f760d49ea2c2 [2020-10-28 00:23:05,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:23:05,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:23:05,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:23:05,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:23:05,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:23:05,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eea80c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05, skipping insertion in model container [2020-10-28 00:23:05,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:23:05,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:23:05,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:23:05,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:23:05,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:23:05,738 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:23:05,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05 WrapperNode [2020-10-28 00:23:05,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:23:05,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:23:05,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:23:05,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:23:05,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... [2020-10-28 00:23:05,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:23:05,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:23:05,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:23:05,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:23:05,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:23:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:23:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:23:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:23:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:23:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:23:06,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:23:06,998 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:23:07,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:23:07 BoogieIcfgContainer [2020-10-28 00:23:07,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:23:07,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:23:07,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:23:07,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:23:07,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:23:05" (1/3) ... [2020-10-28 00:23:07,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f83a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:23:07, skipping insertion in model container [2020-10-28 00:23:07,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:23:05" (2/3) ... [2020-10-28 00:23:07,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f83a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:23:07, skipping insertion in model container [2020-10-28 00:23:07,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:23:07" (3/3) ... [2020-10-28 00:23:07,011 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:23:07,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:23:07,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:23:07,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:23:07,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:23:07,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:23:07,070 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:23:07,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:23:07,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:23:07,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:23:07,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:23:07,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:23:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 00:23:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 00:23:07,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:07,109 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 00:23:07,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:07,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -819651216, now seen corresponding path program 1 times [2020-10-28 00:23:07,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:07,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110959549] [2020-10-28 00:23:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 00:23:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 00:23:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:23:12,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 00:23:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:23:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:23:13,000 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:13,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:13,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 00:23:13,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:23:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:13,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110959549] [2020-10-28 00:23:13,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:13,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:13,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418879002] [2020-10-28 00:23:13,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:13,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:13,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:13,186 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-28 00:23:13,601 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:23:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:14,882 INFO L93 Difference]: Finished difference Result 515 states and 846 transitions. [2020-10-28 00:23:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:14,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 00:23:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:14,899 INFO L225 Difference]: With dead ends: 515 [2020-10-28 00:23:14,900 INFO L226 Difference]: Without dead ends: 387 [2020-10-28 00:23:14,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-28 00:23:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2020-10-28 00:23:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-28 00:23:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 574 transitions. [2020-10-28 00:23:14,988 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 574 transitions. Word has length 100 [2020-10-28 00:23:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:14,989 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 574 transitions. [2020-10-28 00:23:14,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 574 transitions. [2020-10-28 00:23:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:23:15,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:15,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:15,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:23:15,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1129419341, now seen corresponding path program 1 times [2020-10-28 00:23:15,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:15,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174793421] [2020-10-28 00:23:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:16,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:16,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:23:16,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:23:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-28 00:23:16,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:23:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:23:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:23:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:23:17,294 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:17,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:17,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:23:17,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:23:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:17,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174793421] [2020-10-28 00:23:17,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:17,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:23:17,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687973884] [2020-10-28 00:23:17,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:23:17,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:17,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:23:17,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:17,361 INFO L87 Difference]: Start difference. First operand 384 states and 574 transitions. Second operand 5 states. [2020-10-28 00:23:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:18,545 INFO L93 Difference]: Finished difference Result 593 states and 905 transitions. [2020-10-28 00:23:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:23:18,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 00:23:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:18,554 INFO L225 Difference]: With dead ends: 593 [2020-10-28 00:23:18,554 INFO L226 Difference]: Without dead ends: 590 [2020-10-28 00:23:18,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-28 00:23:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 386. [2020-10-28 00:23:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-28 00:23:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 576 transitions. [2020-10-28 00:23:18,612 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 576 transitions. Word has length 101 [2020-10-28 00:23:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:18,613 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 576 transitions. [2020-10-28 00:23:18,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:23:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 576 transitions. [2020-10-28 00:23:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 00:23:18,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:18,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:18,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:23:18,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 866926773, now seen corresponding path program 1 times [2020-10-28 00:23:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703322015] [2020-10-28 00:23:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 00:23:19,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:23:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-28 00:23:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:23:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:23:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 00:23:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:20,360 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:20,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703322015] [2020-10-28 00:23:20,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:20,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:23:20,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475827151] [2020-10-28 00:23:20,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:23:20,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:20,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:23:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:23:20,520 INFO L87 Difference]: Start difference. First operand 386 states and 576 transitions. Second operand 9 states. [2020-10-28 00:23:22,493 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:23:22,868 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:23:23,234 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:23:23,617 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:23:24,010 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 00:23:24,449 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:23:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:25,908 INFO L93 Difference]: Finished difference Result 1919 states and 2972 transitions. [2020-10-28 00:23:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 00:23:25,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-28 00:23:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:25,925 INFO L225 Difference]: With dead ends: 1919 [2020-10-28 00:23:25,926 INFO L226 Difference]: Without dead ends: 1632 [2020-10-28 00:23:25,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 00:23:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-10-28 00:23:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1617. [2020-10-28 00:23:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-10-28 00:23:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2500 transitions. [2020-10-28 00:23:26,076 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2500 transitions. Word has length 102 [2020-10-28 00:23:26,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:26,077 INFO L481 AbstractCegarLoop]: Abstraction has 1617 states and 2500 transitions. [2020-10-28 00:23:26,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:23:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2500 transitions. [2020-10-28 00:23:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 00:23:26,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:26,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:26,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:23:26,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash -723413539, now seen corresponding path program 1 times [2020-10-28 00:23:26,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:26,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290122818] [2020-10-28 00:23:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:23:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:23:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 00:23:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:27,332 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:27,436 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 00:23:27,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290122818] [2020-10-28 00:23:27,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:27,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:23:27,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910964202] [2020-10-28 00:23:27,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:23:27,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:27,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:23:27,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:27,441 INFO L87 Difference]: Start difference. First operand 1617 states and 2500 transitions. Second operand 5 states. [2020-10-28 00:23:27,855 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:23:28,883 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:23:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:29,496 INFO L93 Difference]: Finished difference Result 3725 states and 5834 transitions. [2020-10-28 00:23:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 00:23:29,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-28 00:23:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:29,512 INFO L225 Difference]: With dead ends: 3725 [2020-10-28 00:23:29,512 INFO L226 Difference]: Without dead ends: 2632 [2020-10-28 00:23:29,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:23:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-10-28 00:23:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2617. [2020-10-28 00:23:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-10-28 00:23:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 4066 transitions. [2020-10-28 00:23:29,686 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 4066 transitions. Word has length 103 [2020-10-28 00:23:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:29,688 INFO L481 AbstractCegarLoop]: Abstraction has 2617 states and 4066 transitions. [2020-10-28 00:23:29,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:23:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 4066 transitions. [2020-10-28 00:23:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:23:29,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:29,691 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] [2020-10-28 00:23:29,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:23:29,691 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash 298248740, now seen corresponding path program 1 times [2020-10-28 00:23:29,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:29,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392751472] [2020-10-28 00:23:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:34,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:23:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:35,251 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:35,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:35,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392751472] [2020-10-28 00:23:35,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:35,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:35,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489660250] [2020-10-28 00:23:35,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:35,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:35,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:35,307 INFO L87 Difference]: Start difference. First operand 2617 states and 4066 transitions. Second operand 4 states. [2020-10-28 00:23:35,654 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:23:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:36,933 INFO L93 Difference]: Finished difference Result 5743 states and 8994 transitions. [2020-10-28 00:23:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:36,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 00:23:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:36,956 INFO L225 Difference]: With dead ends: 5743 [2020-10-28 00:23:36,957 INFO L226 Difference]: Without dead ends: 4156 [2020-10-28 00:23:36,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2020-10-28 00:23:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 4143. [2020-10-28 00:23:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4143 states. [2020-10-28 00:23:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6408 transitions. [2020-10-28 00:23:37,227 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6408 transitions. Word has length 104 [2020-10-28 00:23:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:37,228 INFO L481 AbstractCegarLoop]: Abstraction has 4143 states and 6408 transitions. [2020-10-28 00:23:37,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6408 transitions. [2020-10-28 00:23:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:23:37,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:37,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:37,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:23:37,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:37,233 INFO L82 PathProgramCache]: Analyzing trace with hash 123900834, now seen corresponding path program 1 times [2020-10-28 00:23:37,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:37,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356275102] [2020-10-28 00:23:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:42,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:42,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:23:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:23:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:42,635 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:42,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:42,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356275102] [2020-10-28 00:23:42,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:42,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543249910] [2020-10-28 00:23:42,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:42,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:42,686 INFO L87 Difference]: Start difference. First operand 4143 states and 6408 transitions. Second operand 4 states. [2020-10-28 00:23:43,034 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:23:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:44,372 INFO L93 Difference]: Finished difference Result 8278 states and 12866 transitions. [2020-10-28 00:23:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:44,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 00:23:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:44,403 INFO L225 Difference]: With dead ends: 8278 [2020-10-28 00:23:44,404 INFO L226 Difference]: Without dead ends: 6021 [2020-10-28 00:23:44,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2020-10-28 00:23:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 6008. [2020-10-28 00:23:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6008 states. [2020-10-28 00:23:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6008 states to 6008 states and 9218 transitions. [2020-10-28 00:23:44,776 INFO L78 Accepts]: Start accepts. Automaton has 6008 states and 9218 transitions. Word has length 104 [2020-10-28 00:23:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:44,776 INFO L481 AbstractCegarLoop]: Abstraction has 6008 states and 9218 transitions. [2020-10-28 00:23:44,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6008 states and 9218 transitions. [2020-10-28 00:23:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:23:44,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:44,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:44,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:23:44,781 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1482281107, now seen corresponding path program 1 times [2020-10-28 00:23:44,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:44,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086550420] [2020-10-28 00:23:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:44,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:49,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:23:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:23:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:23:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 00:23:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:23:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:50,229 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:50,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:50,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086550420] [2020-10-28 00:23:50,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:50,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:50,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323777906] [2020-10-28 00:23:50,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:50,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:50,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:50,275 INFO L87 Difference]: Start difference. First operand 6008 states and 9218 transitions. Second operand 4 states. [2020-10-28 00:23:50,640 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:23:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:51,928 INFO L93 Difference]: Finished difference Result 8798 states and 13518 transitions. [2020-10-28 00:23:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:51,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 00:23:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:51,966 INFO L225 Difference]: With dead ends: 8798 [2020-10-28 00:23:51,967 INFO L226 Difference]: Without dead ends: 7319 [2020-10-28 00:23:51,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2020-10-28 00:23:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 7316. [2020-10-28 00:23:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7316 states. [2020-10-28 00:23:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 11130 transitions. [2020-10-28 00:23:52,506 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 11130 transitions. Word has length 104 [2020-10-28 00:23:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:52,506 INFO L481 AbstractCegarLoop]: Abstraction has 7316 states and 11130 transitions. [2020-10-28 00:23:52,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 11130 transitions. [2020-10-28 00:23:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:23:52,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:52,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:52,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:23:52,512 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1457995236, now seen corresponding path program 1 times [2020-10-28 00:23:52,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:52,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818249268] [2020-10-28 00:23:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 00:23:57,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:23:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:57,897 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:23:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:57,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:57,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:57,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:57,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818249268] [2020-10-28 00:23:57,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:57,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:57,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262630026] [2020-10-28 00:23:57,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:57,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:57,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:57,944 INFO L87 Difference]: Start difference. First operand 7316 states and 11130 transitions. Second operand 4 states. [2020-10-28 00:23:58,299 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:23:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:59,803 INFO L93 Difference]: Finished difference Result 13490 states and 20584 transitions. [2020-10-28 00:23:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:59,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 00:23:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:59,833 INFO L225 Difference]: With dead ends: 13490 [2020-10-28 00:23:59,834 INFO L226 Difference]: Without dead ends: 9347 [2020-10-28 00:23:59,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2020-10-28 00:24:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 9328. [2020-10-28 00:24:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9328 states. [2020-10-28 00:24:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 14026 transitions. [2020-10-28 00:24:00,291 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 14026 transitions. Word has length 104 [2020-10-28 00:24:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:00,292 INFO L481 AbstractCegarLoop]: Abstraction has 9328 states and 14026 transitions. [2020-10-28 00:24:00,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 14026 transitions. [2020-10-28 00:24:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:24:00,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:00,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:00,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:24:00,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -639803550, now seen corresponding path program 1 times [2020-10-28 00:24:00,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:00,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497990631] [2020-10-28 00:24:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 00:24:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:03,646 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:03,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:03,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:03,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:03,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:24:03,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:03,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:03,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:03,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:03,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497990631] [2020-10-28 00:24:03,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:03,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:03,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16406971] [2020-10-28 00:24:03,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:03,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:03,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:03,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:03,690 INFO L87 Difference]: Start difference. First operand 9328 states and 14026 transitions. Second operand 6 states. [2020-10-28 00:24:05,017 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:06,698 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:24:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:07,911 INFO L93 Difference]: Finished difference Result 67485 states and 101078 transitions. [2020-10-28 00:24:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:24:07,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 00:24:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:08,066 INFO L225 Difference]: With dead ends: 67485 [2020-10-28 00:24:08,066 INFO L226 Difference]: Without dead ends: 58729 [2020-10-28 00:24:08,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:24:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58729 states. [2020-10-28 00:24:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58729 to 9737. [2020-10-28 00:24:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9737 states. [2020-10-28 00:24:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9737 states to 9737 states and 14460 transitions. [2020-10-28 00:24:09,082 INFO L78 Accepts]: Start accepts. Automaton has 9737 states and 14460 transitions. Word has length 104 [2020-10-28 00:24:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:09,083 INFO L481 AbstractCegarLoop]: Abstraction has 9737 states and 14460 transitions. [2020-10-28 00:24:09,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:24:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9737 states and 14460 transitions. [2020-10-28 00:24:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:24:09,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:09,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:09,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:24:09,090 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -795695516, now seen corresponding path program 1 times [2020-10-28 00:24:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:09,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545646501] [2020-10-28 00:24:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:14,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:14,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:24:14,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:24:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:24:14,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:24:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:24:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:14,657 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:14,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:14,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545646501] [2020-10-28 00:24:14,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:14,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:14,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289562281] [2020-10-28 00:24:14,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:14,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:14,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:14,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:14,691 INFO L87 Difference]: Start difference. First operand 9737 states and 14460 transitions. Second operand 4 states. [2020-10-28 00:24:15,057 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:24:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:17,009 INFO L93 Difference]: Finished difference Result 26072 states and 38988 transitions. [2020-10-28 00:24:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:17,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 00:24:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:17,053 INFO L225 Difference]: With dead ends: 26072 [2020-10-28 00:24:17,053 INFO L226 Difference]: Without dead ends: 17615 [2020-10-28 00:24:17,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17615 states. [2020-10-28 00:24:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17615 to 17612. [2020-10-28 00:24:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17612 states. [2020-10-28 00:24:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 26178 transitions. [2020-10-28 00:24:18,513 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 26178 transitions. Word has length 104 [2020-10-28 00:24:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:18,513 INFO L481 AbstractCegarLoop]: Abstraction has 17612 states and 26178 transitions. [2020-10-28 00:24:18,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 26178 transitions. [2020-10-28 00:24:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:24:18,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:18,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:18,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:24:18,523 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash -421681833, now seen corresponding path program 1 times [2020-10-28 00:24:18,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:18,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674609453] [2020-10-28 00:24:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:21,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:21,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:24:21,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2949 [2020-10-28 00:24:21,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:24:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:21,868 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:21,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:21,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674609453] [2020-10-28 00:24:21,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:21,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:21,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276601135] [2020-10-28 00:24:21,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:21,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:21,904 INFO L87 Difference]: Start difference. First operand 17612 states and 26178 transitions. Second operand 6 states. [2020-10-28 00:24:23,258 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:25,893 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:24:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:28,186 INFO L93 Difference]: Finished difference Result 94300 states and 139344 transitions. [2020-10-28 00:24:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:24:28,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 00:24:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:28,481 INFO L225 Difference]: With dead ends: 94300 [2020-10-28 00:24:28,481 INFO L226 Difference]: Without dead ends: 78810 [2020-10-28 00:24:28,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:24:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78810 states. [2020-10-28 00:24:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78810 to 18565. [2020-10-28 00:24:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18565 states. [2020-10-28 00:24:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18565 states to 18565 states and 27270 transitions. [2020-10-28 00:24:30,493 INFO L78 Accepts]: Start accepts. Automaton has 18565 states and 27270 transitions. Word has length 104 [2020-10-28 00:24:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:30,493 INFO L481 AbstractCegarLoop]: Abstraction has 18565 states and 27270 transitions. [2020-10-28 00:24:30,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:24:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18565 states and 27270 transitions. [2020-10-28 00:24:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:24:30,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:30,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:30,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:24:30,504 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1240893399, now seen corresponding path program 1 times [2020-10-28 00:24:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:30,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594624226] [2020-10-28 00:24:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:24:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-10-28 00:24:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 00:24:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:33,409 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594624226] [2020-10-28 00:24:33,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:33,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064609494] [2020-10-28 00:24:33,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:33,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:33,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:33,450 INFO L87 Difference]: Start difference. First operand 18565 states and 27270 transitions. Second operand 6 states. [2020-10-28 00:24:34,919 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:37,863 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:24:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:39,789 INFO L93 Difference]: Finished difference Result 76657 states and 112507 transitions. [2020-10-28 00:24:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:24:39,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 00:24:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:39,862 INFO L225 Difference]: With dead ends: 76657 [2020-10-28 00:24:39,863 INFO L226 Difference]: Without dead ends: 61293 [2020-10-28 00:24:39,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:24:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61293 states. [2020-10-28 00:24:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61293 to 33282. [2020-10-28 00:24:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33282 states. [2020-10-28 00:24:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 48423 transitions. [2020-10-28 00:24:43,138 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 48423 transitions. Word has length 104 [2020-10-28 00:24:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:43,139 INFO L481 AbstractCegarLoop]: Abstraction has 33282 states and 48423 transitions. [2020-10-28 00:24:43,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:24:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 48423 transitions. [2020-10-28 00:24:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:24:43,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:43,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:43,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:24:43,153 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:43,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1759733948, now seen corresponding path program 1 times [2020-10-28 00:24:43,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:43,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687972127] [2020-10-28 00:24:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:45,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:24:45,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-28 00:24:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:24:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:24:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 00:24:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:46,073 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:24:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:46,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:46,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687972127] [2020-10-28 00:24:46,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:46,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:24:46,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538054617] [2020-10-28 00:24:46,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:24:46,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:46,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:24:46,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:46,105 INFO L87 Difference]: Start difference. First operand 33282 states and 48423 transitions. Second operand 6 states. [2020-10-28 00:24:47,680 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:24:51,982 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:25:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:01,207 INFO L93 Difference]: Finished difference Result 196540 states and 283191 transitions. [2020-10-28 00:25:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:25:01,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 00:25:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:01,647 INFO L225 Difference]: With dead ends: 196540 [2020-10-28 00:25:01,648 INFO L226 Difference]: Without dead ends: 167365 [2020-10-28 00:25:01,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:25:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167365 states. [2020-10-28 00:25:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167365 to 35078. [2020-10-28 00:25:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35078 states. [2020-10-28 00:25:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35078 states to 35078 states and 50455 transitions. [2020-10-28 00:25:05,508 INFO L78 Accepts]: Start accepts. Automaton has 35078 states and 50455 transitions. Word has length 104 [2020-10-28 00:25:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:05,508 INFO L481 AbstractCegarLoop]: Abstraction has 35078 states and 50455 transitions. [2020-10-28 00:25:05,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:25:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 35078 states and 50455 transitions. [2020-10-28 00:25:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:25:05,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:05,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:25:05,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:25:05,600 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:05,601 INFO L82 PathProgramCache]: Analyzing trace with hash 631158261, now seen corresponding path program 1 times [2020-10-28 00:25:05,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:05,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729643830] [2020-10-28 00:25:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:25:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:08,470 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:25:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:25:08,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729643830] [2020-10-28 00:25:08,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:08,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:25:08,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801569844] [2020-10-28 00:25:08,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:25:08,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:08,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:25:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:25:08,501 INFO L87 Difference]: Start difference. First operand 35078 states and 50455 transitions. Second operand 6 states. [2020-10-28 00:25:10,472 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 00:25:16,206 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:25:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:28,148 INFO L93 Difference]: Finished difference Result 222444 states and 317809 transitions. [2020-10-28 00:25:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:25:28,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 00:25:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:28,439 INFO L225 Difference]: With dead ends: 222444 [2020-10-28 00:25:28,439 INFO L226 Difference]: Without dead ends: 191607 [2020-10-28 00:25:28,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:25:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191607 states. [2020-10-28 00:25:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191607 to 38584. [2020-10-28 00:25:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38584 states. [2020-10-28 00:25:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38584 states to 38584 states and 54503 transitions. [2020-10-28 00:25:33,000 INFO L78 Accepts]: Start accepts. Automaton has 38584 states and 54503 transitions. Word has length 104 [2020-10-28 00:25:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:33,001 INFO L481 AbstractCegarLoop]: Abstraction has 38584 states and 54503 transitions. [2020-10-28 00:25:33,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:25:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38584 states and 54503 transitions. [2020-10-28 00:25:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:25:33,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:33,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:25:33,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:25:33,017 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1322475805, now seen corresponding path program 1 times [2020-10-28 00:25:33,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:33,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128934553] [2020-10-28 00:25:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:25:38,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:25:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:38,658 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:25:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:38,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:38,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:25:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:25:38,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128934553] [2020-10-28 00:25:38,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:25:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51155223] [2020-10-28 00:25:38,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:25:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:25:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:25:38,710 INFO L87 Difference]: Start difference. First operand 38584 states and 54503 transitions. Second operand 11 states. [2020-10-28 00:25:39,165 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:25:42,271 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-28 00:25:43,521 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 00:26:01,185 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 00:26:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:25,025 INFO L93 Difference]: Finished difference Result 392534 states and 552847 transitions. [2020-10-28 00:26:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 00:26:25,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-28 00:26:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:25,795 INFO L225 Difference]: With dead ends: 392534 [2020-10-28 00:26:25,795 INFO L226 Difference]: Without dead ends: 363871 [2020-10-28 00:26:25,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 00:26:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363871 states. [2020-10-28 00:26:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363871 to 41778. [2020-10-28 00:26:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41778 states. [2020-10-28 00:26:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41778 states to 41778 states and 58897 transitions. [2020-10-28 00:26:32,683 INFO L78 Accepts]: Start accepts. Automaton has 41778 states and 58897 transitions. Word has length 105 [2020-10-28 00:26:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:32,683 INFO L481 AbstractCegarLoop]: Abstraction has 41778 states and 58897 transitions. [2020-10-28 00:26:32,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:26:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 41778 states and 58897 transitions. [2020-10-28 00:26:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:26:32,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:32,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:32,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:26:32,705 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:32,705 INFO L82 PathProgramCache]: Analyzing trace with hash -503203348, now seen corresponding path program 1 times [2020-10-28 00:26:32,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:32,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084582754] [2020-10-28 00:26:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:37,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:26:37,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:26:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:38,277 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 00:26:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:38,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:38,313 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 00:26:38,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084582754] [2020-10-28 00:26:38,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:38,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:26:38,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959746776] [2020-10-28 00:26:38,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:26:38,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:26:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:26:38,315 INFO L87 Difference]: Start difference. First operand 41778 states and 58897 transitions. Second operand 11 states. [2020-10-28 00:26:38,742 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:26:42,776 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 201