/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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:44:45,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:44:45,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:44:45,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:44:45,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:44:45,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:44:45,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:44:45,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:44:45,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:44:45,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:44:45,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:44:45,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:44:45,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:44:45,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:44:45,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:44:45,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:44:45,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:44:45,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:44:45,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:44:45,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:44:45,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:44:45,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:44:45,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:44:45,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:44:45,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:44:45,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:44:45,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:44:45,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:44:45,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:44:45,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:44:45,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:44:45,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:44:45,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:44:45,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:44:45,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:44:45,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:44:45,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:44:45,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:44:45,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:44:45,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:44:45,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:44:45,485 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 [2020-10-27 23:44:45,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:44:45,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:44:45,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:44:45,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:44:45,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:44:45,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:44:45,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:44:45,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:44:45,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:44:45,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:44:45,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:44:45,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:44:45,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:44:45,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:44:45,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:44:45,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:44:45,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:44:45,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:44:45,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:44:45,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:44:45,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:44:45,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:44:45,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:44:45,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:44:45,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:44:45,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:44:45,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:44:45,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:44:45,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:44:45,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:44:45,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:44:45,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:44:46,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:44:46,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:44:46,002 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:44:46,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:44:46,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e15dc575/0fbf6a6c8ffc458eb474ff1cfd27a601/FLAG83475f9f1 [2020-10-27 23:44:46,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:44:46,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:44:46,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e15dc575/0fbf6a6c8ffc458eb474ff1cfd27a601/FLAG83475f9f1 [2020-10-27 23:44:47,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e15dc575/0fbf6a6c8ffc458eb474ff1cfd27a601 [2020-10-27 23:44:47,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:44:47,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:44:47,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:44:47,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:44:47,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:44:47,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66932ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47, skipping insertion in model container [2020-10-27 23:44:47,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:44:47,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:44:47,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:44:47,750 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:44:47,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:44:47,866 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:44:47,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47 WrapperNode [2020-10-27 23:44:47,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:44:47,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:44:47,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:44:47,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:44:47,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... [2020-10-27 23:44:47,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:44:47,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:44:47,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:44:47,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:44:47,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:44:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:44:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:44:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:44:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:44:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:44:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:44:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:44:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:44:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:44:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:44:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:44:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:44:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:44:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:44:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:44:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:44:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:44:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:44:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:44:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:44:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:44:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:44:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:44:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:44:48,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:44:48,984 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:44:48,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:48 BoogieIcfgContainer [2020-10-27 23:44:48,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:44:48,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:44:48,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:44:48,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:44:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:44:47" (1/3) ... [2020-10-27 23:44:48,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e9317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:48, skipping insertion in model container [2020-10-27 23:44:48,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:47" (2/3) ... [2020-10-27 23:44:48,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e9317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:48, skipping insertion in model container [2020-10-27 23:44:48,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:48" (3/3) ... [2020-10-27 23:44:48,998 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:44:49,012 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:44:49,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:44:49,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:44:49,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:44:49,073 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:44:49,073 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:44:49,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:44:49,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:44:49,073 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:44:49,073 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:44:49,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:44:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-27 23:44:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:44:49,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:44:49,149 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] [2020-10-27 23:44:49,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:44:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:44:49,157 INFO L82 PathProgramCache]: Analyzing trace with hash 350764180, now seen corresponding path program 1 times [2020-10-27 23:44:49,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:44:49,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128435685] [2020-10-27 23:44:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:44:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:44:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:54,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:44:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 23:44:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:44:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:44:54,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:44:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:44:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:44:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:44:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 23:44:54,939 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:44:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:44:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:44:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:54,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:44:54,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:44:54,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:44:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:44:54,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:44:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:44:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:44:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:44:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:44:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:44:55,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128435685] [2020-10-27 23:44:55,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:44:55,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:44:55,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503114562] [2020-10-27 23:44:55,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:44:55,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:44:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:44:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:44:55,064 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-10-27 23:44:55,309 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:44:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:44:56,080 INFO L93 Difference]: Finished difference Result 258 states and 416 transitions. [2020-10-27 23:44:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:44:56,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-27 23:44:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:44:56,096 INFO L225 Difference]: With dead ends: 258 [2020-10-27 23:44:56,096 INFO L226 Difference]: Without dead ends: 190 [2020-10-27 23:44:56,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:44:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-27 23:44:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-27 23:44:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 23:44:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 268 transitions. [2020-10-27 23:44:56,168 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 268 transitions. Word has length 66 [2020-10-27 23:44:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:44:56,169 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 268 transitions. [2020-10-27 23:44:56,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:44:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 268 transitions. [2020-10-27 23:44:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 23:44:56,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:44:56,172 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] [2020-10-27 23:44:56,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:44:56,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:44:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:44:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2147329497, now seen corresponding path program 1 times [2020-10-27 23:44:56,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:44:56,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629998955] [2020-10-27 23:44:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:44:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:44:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:44:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:45:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:45:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:01,572 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:45:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:01,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629998955] [2020-10-27 23:45:01,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:01,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:45:01,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057090224] [2020-10-27 23:45:01,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:45:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:45:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:45:01,642 INFO L87 Difference]: Start difference. First operand 187 states and 268 transitions. Second operand 7 states. [2020-10-27 23:45:01,963 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:02,906 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:03,147 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:45:03,413 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:45:03,643 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:45:04,583 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:45:04,791 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:05,226 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:45:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:05,290 INFO L93 Difference]: Finished difference Result 1088 states and 1666 transitions. [2020-10-27 23:45:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:45:05,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-27 23:45:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:05,301 INFO L225 Difference]: With dead ends: 1088 [2020-10-27 23:45:05,301 INFO L226 Difference]: Without dead ends: 946 [2020-10-27 23:45:05,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:45:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-27 23:45:05,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 433. [2020-10-27 23:45:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-27 23:45:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 649 transitions. [2020-10-27 23:45:05,405 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 649 transitions. Word has length 68 [2020-10-27 23:45:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:05,405 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 649 transitions. [2020-10-27 23:45:05,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:45:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 649 transitions. [2020-10-27 23:45:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:45:05,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:05,413 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] [2020-10-27 23:45:05,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:45:05,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1371296962, now seen corresponding path program 1 times [2020-10-27 23:45:05,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:05,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810514678] [2020-10-27 23:45:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:10,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:10,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:45:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:45:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:10,711 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:45:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:10,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810514678] [2020-10-27 23:45:10,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:10,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:45:10,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525421621] [2020-10-27 23:45:10,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:45:10,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:10,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:45:10,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:45:10,755 INFO L87 Difference]: Start difference. First operand 433 states and 649 transitions. Second operand 7 states. [2020-10-27 23:45:10,996 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:11,652 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:45:11,898 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:12,110 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:45:12,312 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:45:12,983 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:45:13,182 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:13,582 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:45:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:13,627 INFO L93 Difference]: Finished difference Result 2250 states and 3503 transitions. [2020-10-27 23:45:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:45:13,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-27 23:45:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:13,643 INFO L225 Difference]: With dead ends: 2250 [2020-10-27 23:45:13,644 INFO L226 Difference]: Without dead ends: 1908 [2020-10-27 23:45:13,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:45:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-27 23:45:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 659. [2020-10-27 23:45:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-27 23:45:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1004 transitions. [2020-10-27 23:45:13,718 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1004 transitions. Word has length 69 [2020-10-27 23:45:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:13,718 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 1004 transitions. [2020-10-27 23:45:13,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:45:13,719 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1004 transitions. [2020-10-27 23:45:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:45:13,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:13,722 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] [2020-10-27 23:45:13,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:45:13,723 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:13,724 INFO L82 PathProgramCache]: Analyzing trace with hash 145493869, now seen corresponding path program 1 times [2020-10-27 23:45:13,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:13,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255748136] [2020-10-27 23:45:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:18,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:18,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:45:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:45:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:19,009 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:19,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:19,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:19,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:45:19,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:19,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255748136] [2020-10-27 23:45:19,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:19,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:45:19,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472643941] [2020-10-27 23:45:19,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:45:19,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:19,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:45:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:45:19,054 INFO L87 Difference]: Start difference. First operand 659 states and 1004 transitions. Second operand 7 states. [2020-10-27 23:45:19,283 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:19,921 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:45:20,159 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:20,376 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:45:20,616 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:45:21,356 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:45:21,562 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:45:21,932 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:45:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:21,970 INFO L93 Difference]: Finished difference Result 2631 states and 4071 transitions. [2020-10-27 23:45:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:45:21,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-27 23:45:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:21,988 INFO L225 Difference]: With dead ends: 2631 [2020-10-27 23:45:21,988 INFO L226 Difference]: Without dead ends: 2295 [2020-10-27 23:45:21,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:45:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-27 23:45:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1006. [2020-10-27 23:45:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-27 23:45:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1532 transitions. [2020-10-27 23:45:22,079 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1532 transitions. Word has length 69 [2020-10-27 23:45:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:22,079 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1532 transitions. [2020-10-27 23:45:22,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:45:22,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1532 transitions. [2020-10-27 23:45:22,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:45:22,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:22,086 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] [2020-10-27 23:45:22,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:45:22,087 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash 153041112, now seen corresponding path program 1 times [2020-10-27 23:45:22,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:22,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133192455] [2020-10-27 23:45:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:45:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:45:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:45:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:45:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:45:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:45:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:27,461 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-10-27 23:45:27,694 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:27,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:27,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133192455] [2020-10-27 23:45:27,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:27,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:45:27,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887358063] [2020-10-27 23:45:27,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:45:27,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:27,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:45:27,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:45:27,739 INFO L87 Difference]: Start difference. First operand 1006 states and 1532 transitions. Second operand 10 states. [2020-10-27 23:45:28,055 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:45:28,399 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-27 23:45:29,187 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:45:31,141 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:45:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:31,477 INFO L93 Difference]: Finished difference Result 5609 states and 8530 transitions. [2020-10-27 23:45:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:45:31,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 23:45:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:31,509 INFO L225 Difference]: With dead ends: 5609 [2020-10-27 23:45:31,509 INFO L226 Difference]: Without dead ends: 4820 [2020-10-27 23:45:31,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:45:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2020-10-27 23:45:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 1003. [2020-10-27 23:45:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-27 23:45:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1522 transitions. [2020-10-27 23:45:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1522 transitions. Word has length 70 [2020-10-27 23:45:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:31,745 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1522 transitions. [2020-10-27 23:45:31,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:45:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1522 transitions. [2020-10-27 23:45:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:45:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:31,747 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] [2020-10-27 23:45:31,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:45:31,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:31,748 INFO L82 PathProgramCache]: Analyzing trace with hash -393216958, now seen corresponding path program 1 times [2020-10-27 23:45:31,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:31,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720074975] [2020-10-27 23:45:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:36,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:45:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:45:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:37,081 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 34 [2020-10-27 23:45:37,453 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:45:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720074975] [2020-10-27 23:45:37,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:37,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:45:37,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556521658] [2020-10-27 23:45:37,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:45:37,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:45:37,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:45:37,499 INFO L87 Difference]: Start difference. First operand 1003 states and 1522 transitions. Second operand 14 states. [2020-10-27 23:45:37,789 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:45:39,315 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:45:39,558 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:45:42,066 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:45:42,351 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:45:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:43,484 INFO L93 Difference]: Finished difference Result 5809 states and 8745 transitions. [2020-10-27 23:45:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 23:45:43,485 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-27 23:45:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:43,513 INFO L225 Difference]: With dead ends: 5809 [2020-10-27 23:45:43,513 INFO L226 Difference]: Without dead ends: 5246 [2020-10-27 23:45:43,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=511, Invalid=2911, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 23:45:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2020-10-27 23:45:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 1009. [2020-10-27 23:45:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-27 23:45:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1528 transitions. [2020-10-27 23:45:43,728 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1528 transitions. Word has length 70 [2020-10-27 23:45:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:43,729 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1528 transitions. [2020-10-27 23:45:43,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:45:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1528 transitions. [2020-10-27 23:45:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:45:43,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:43,732 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] [2020-10-27 23:45:43,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:45:43,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -198363444, now seen corresponding path program 1 times [2020-10-27 23:45:43,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:43,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855718070] [2020-10-27 23:45:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:43,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:44,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:44,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:45:48,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:45:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:45:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:45:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:45:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:45:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:49,016 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:45:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:45:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:49,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855718070] [2020-10-27 23:45:49,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:49,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:45:49,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610164108] [2020-10-27 23:45:49,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:45:49,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:49,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:45:49,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:45:49,073 INFO L87 Difference]: Start difference. First operand 1009 states and 1528 transitions. Second operand 4 states. [2020-10-27 23:45:49,387 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:45:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:50,031 INFO L93 Difference]: Finished difference Result 2144 states and 3300 transitions. [2020-10-27 23:45:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:45:50,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 23:45:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:50,039 INFO L225 Difference]: With dead ends: 2144 [2020-10-27 23:45:50,039 INFO L226 Difference]: Without dead ends: 1399 [2020-10-27 23:45:50,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:45:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-10-27 23:45:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1396. [2020-10-27 23:45:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-10-27 23:45:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2120 transitions. [2020-10-27 23:45:50,207 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2120 transitions. Word has length 70 [2020-10-27 23:45:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:50,208 INFO L481 AbstractCegarLoop]: Abstraction has 1396 states and 2120 transitions. [2020-10-27 23:45:50,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:45:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2120 transitions. [2020-10-27 23:45:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:45:50,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:50,209 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] [2020-10-27 23:45:50,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:45:50,210 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1223800629, now seen corresponding path program 1 times [2020-10-27 23:45:50,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:50,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145565419] [2020-10-27 23:45:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:51,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:55,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:45:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:55,457 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:45:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:45:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:55,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:45:55,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:45:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:45:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:45:55,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145565419] [2020-10-27 23:45:55,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:45:55,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:45:55,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418632149] [2020-10-27 23:45:55,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:45:55,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:45:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:45:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:45:55,492 INFO L87 Difference]: Start difference. First operand 1396 states and 2120 transitions. Second operand 4 states. [2020-10-27 23:45:56,001 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:45:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:45:56,582 INFO L93 Difference]: Finished difference Result 3524 states and 5396 transitions. [2020-10-27 23:45:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:45:56,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 23:45:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:45:56,593 INFO L225 Difference]: With dead ends: 3524 [2020-10-27 23:45:56,593 INFO L226 Difference]: Without dead ends: 2392 [2020-10-27 23:45:56,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:45:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2020-10-27 23:45:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2341. [2020-10-27 23:45:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2020-10-27 23:45:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3536 transitions. [2020-10-27 23:45:56,975 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3536 transitions. Word has length 70 [2020-10-27 23:45:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:45:56,976 INFO L481 AbstractCegarLoop]: Abstraction has 2341 states and 3536 transitions. [2020-10-27 23:45:56,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:45:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3536 transitions. [2020-10-27 23:45:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:45:56,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:45:56,978 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] [2020-10-27 23:45:56,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:45:56,978 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:45:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:45:56,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1354653709, now seen corresponding path program 1 times [2020-10-27 23:45:56,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:45:56,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243993639] [2020-10-27 23:45:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:45:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:45:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:45:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:46:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:46:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:46:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:02,242 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:46:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:46:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:46:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:46:02,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243993639] [2020-10-27 23:46:02,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:46:02,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:46:02,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651703306] [2020-10-27 23:46:02,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:46:02,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:46:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:46:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:46:02,271 INFO L87 Difference]: Start difference. First operand 2341 states and 3536 transitions. Second operand 6 states. [2020-10-27 23:46:02,503 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:46:03,232 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:46:03,462 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:46:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:46:05,358 INFO L93 Difference]: Finished difference Result 11635 states and 17716 transitions. [2020-10-27 23:46:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:46:05,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 23:46:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:46:05,399 INFO L225 Difference]: With dead ends: 11635 [2020-10-27 23:46:05,399 INFO L226 Difference]: Without dead ends: 10044 [2020-10-27 23:46:05,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:46:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2020-10-27 23:46:06,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 4369. [2020-10-27 23:46:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-10-27 23:46:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6608 transitions. [2020-10-27 23:46:06,055 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6608 transitions. Word has length 70 [2020-10-27 23:46:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:46:06,055 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6608 transitions. [2020-10-27 23:46:06,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:46:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6608 transitions. [2020-10-27 23:46:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:46:06,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:46:06,057 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] [2020-10-27 23:46:06,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:46:06,057 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:46:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:46:06,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1914668765, now seen corresponding path program 1 times [2020-10-27 23:46:06,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:46:06,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164830325] [2020-10-27 23:46:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:46:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:11,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:11,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:46:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:46:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:11,345 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-27 23:46:11,661 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:46:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:46:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:11,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:11,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:46:11,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:46:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:46:11,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:46:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:46:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:46:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:46:11,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164830325] [2020-10-27 23:46:11,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:46:11,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:46:11,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237421916] [2020-10-27 23:46:11,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:46:11,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:46:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:46:11,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:46:11,697 INFO L87 Difference]: Start difference. First operand 4369 states and 6608 transitions. Second operand 11 states. [2020-10-27 23:46:11,967 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:46:13,591 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:46:18,991 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:46:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:46:22,110 INFO L93 Difference]: Finished difference Result 43912 states and 65345 transitions. [2020-10-27 23:46:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 23:46:22,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:46:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:46:22,206 INFO L225 Difference]: With dead ends: 43912 [2020-10-27 23:46:22,206 INFO L226 Difference]: Without dead ends: 39747 [2020-10-27 23:46:22,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 23:46:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39747 states. [2020-10-27 23:46:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39747 to 4488. [2020-10-27 23:46:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2020-10-27 23:46:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6660 transitions. [2020-10-27 23:46:23,444 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6660 transitions. Word has length 70 [2020-10-27 23:46:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:46:23,444 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6660 transitions. [2020-10-27 23:46:23,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:46:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6660 transitions. [2020-10-27 23:46:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:46:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:46:23,446 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] [2020-10-27 23:46:23,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:46:23,447 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:46:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:46:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1669831943, now seen corresponding path program 1 times [2020-10-27 23:46:23,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:46:23,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187222204] [2020-10-27 23:46:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:46:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:23,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 23:46:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:28,732 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:46:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:46:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:46:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:46:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:46:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:46:28,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187222204] [2020-10-27 23:46:28,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:46:28,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:46:28,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986917629] [2020-10-27 23:46:28,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:46:28,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:46:28,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:46:28,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:46:28,760 INFO L87 Difference]: Start difference. First operand 4488 states and 6660 transitions. Second operand 7 states. [2020-10-27 23:46:29,029 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:46:29,716 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:46:29,962 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:46:30,306 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:46:30,555 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:46:30,779 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:46:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:46:33,957 INFO L93 Difference]: Finished difference Result 20181 states and 30160 transitions. [2020-10-27 23:46:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:46:33,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-27 23:46:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:46:33,996 INFO L225 Difference]: With dead ends: 20181 [2020-10-27 23:46:33,996 INFO L226 Difference]: Without dead ends: 16084 [2020-10-27 23:46:34,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:46:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2020-10-27 23:46:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 7338. [2020-10-27 23:46:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7338 states. [2020-10-27 23:46:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 10905 transitions. [2020-10-27 23:46:35,589 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 10905 transitions. Word has length 70 [2020-10-27 23:46:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:46:35,589 INFO L481 AbstractCegarLoop]: Abstraction has 7338 states and 10905 transitions. [2020-10-27 23:46:35,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:46:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 10905 transitions. [2020-10-27 23:46:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:46:35,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:46:35,592 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] [2020-10-27 23:46:35,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:46:35,592 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:46:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:46:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1123573873, now seen corresponding path program 1 times [2020-10-27 23:46:35,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:46:35,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57730740] [2020-10-27 23:46:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:46:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:46:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:46:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:46:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:40,856 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:46:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:46:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:40,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:46:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:46:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:46:40,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:46:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:46:40,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57730740] [2020-10-27 23:46:40,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:46:40,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:46:40,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555180698] [2020-10-27 23:46:40,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:46:40,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:46:40,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:46:40,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:46:40,880 INFO L87 Difference]: Start difference. First operand 7338 states and 10905 transitions. Second operand 6 states. [2020-10-27 23:46:41,112 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:46:42,211 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:46:42,509 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:46:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:46:48,810 INFO L93 Difference]: Finished difference Result 29518 states and 44106 transitions. [2020-10-27 23:46:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:46:48,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 23:46:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:46:48,859 INFO L225 Difference]: With dead ends: 29518 [2020-10-27 23:46:48,859 INFO L226 Difference]: Without dead ends: 27199 [2020-10-27 23:46:48,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:46:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27199 states. [2020-10-27 23:46:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27199 to 10750. [2020-10-27 23:46:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10750 states. [2020-10-27 23:46:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 15983 transitions. [2020-10-27 23:46:51,321 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 15983 transitions. Word has length 70 [2020-10-27 23:46:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:46:51,321 INFO L481 AbstractCegarLoop]: Abstraction has 10750 states and 15983 transitions. [2020-10-27 23:46:51,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:46:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 15983 transitions. [2020-10-27 23:46:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:46:51,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:46:51,324 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] [2020-10-27 23:46:51,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:46:51,324 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:46:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:46:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 162137122, now seen corresponding path program 1 times [2020-10-27 23:46:51,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:46:51,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034002305] [2020-10-27 23:46:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:46:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:46:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:56,736 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:46:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:46:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:46:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:46:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:46:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:46:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:46:56,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034002305] [2020-10-27 23:46:56,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:46:56,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:46:56,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810712487] [2020-10-27 23:46:56,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:46:56,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:46:56,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:46:56,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:46:56,766 INFO L87 Difference]: Start difference. First operand 10750 states and 15983 transitions. Second operand 9 states. [2020-10-27 23:46:57,050 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:46:58,355 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:46:58,621 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 23:47:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:05,581 INFO L93 Difference]: Finished difference Result 37834 states and 56056 transitions. [2020-10-27 23:47:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 23:47:05,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-27 23:47:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:05,626 INFO L225 Difference]: With dead ends: 37834 [2020-10-27 23:47:05,627 INFO L226 Difference]: Without dead ends: 27483 [2020-10-27 23:47:05,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-27 23:47:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27483 states. [2020-10-27 23:47:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27483 to 16068. [2020-10-27 23:47:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16068 states. [2020-10-27 23:47:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 23806 transitions. [2020-10-27 23:47:09,702 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 23806 transitions. Word has length 70 [2020-10-27 23:47:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:09,703 INFO L481 AbstractCegarLoop]: Abstraction has 16068 states and 23806 transitions. [2020-10-27 23:47:09,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:47:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 23806 transitions. [2020-10-27 23:47:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:47:09,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:09,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:47:09,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:47:09,707 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:09,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2113559392, now seen corresponding path program 1 times [2020-10-27 23:47:09,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:09,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219122644] [2020-10-27 23:47:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:11,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:14,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:47:14,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:15,091 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 34 [2020-10-27 23:47:15,387 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:47:15,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219122644] [2020-10-27 23:47:15,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:15,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:47:15,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357718543] [2020-10-27 23:47:15,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:47:15,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:15,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:47:15,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:47:15,418 INFO L87 Difference]: Start difference. First operand 16068 states and 23806 transitions. Second operand 11 states. [2020-10-27 23:47:15,590 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-27 23:47:15,902 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:47:16,239 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-27 23:47:16,408 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-27 23:47:17,378 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:47:24,722 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:47:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:35,292 INFO L93 Difference]: Finished difference Result 83460 states and 123434 transitions. [2020-10-27 23:47:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 23:47:35,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:47:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:35,583 INFO L225 Difference]: With dead ends: 83460 [2020-10-27 23:47:35,583 INFO L226 Difference]: Without dead ends: 67905 [2020-10-27 23:47:35,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:47:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67905 states. [2020-10-27 23:47:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67905 to 15914. [2020-10-27 23:47:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15914 states. [2020-10-27 23:47:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15914 states to 15914 states and 23332 transitions. [2020-10-27 23:47:40,294 INFO L78 Accepts]: Start accepts. Automaton has 15914 states and 23332 transitions. Word has length 70 [2020-10-27 23:47:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:40,294 INFO L481 AbstractCegarLoop]: Abstraction has 15914 states and 23332 transitions. [2020-10-27 23:47:40,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:47:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand 15914 states and 23332 transitions. [2020-10-27 23:47:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:47:40,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:40,297 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] [2020-10-27 23:47:40,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:47:40,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1219971153, now seen corresponding path program 1 times [2020-10-27 23:47:40,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:40,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860883576] [2020-10-27 23:47:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:47:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:47:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:47:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:45,541 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-10-27 23:47:45,836 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:45,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:47:45,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860883576] [2020-10-27 23:47:45,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:45,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:47:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857022763] [2020-10-27 23:47:45,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:47:45,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:45,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:47:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:47:45,862 INFO L87 Difference]: Start difference. First operand 15914 states and 23332 transitions. Second operand 11 states. [2020-10-27 23:47:46,177 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 23:47:46,657 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-27 23:47:47,957 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:04,557 INFO L93 Difference]: Finished difference Result 64527 states and 94092 transitions. [2020-10-27 23:48:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 23:48:04,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:48:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:04,652 INFO L225 Difference]: With dead ends: 64527 [2020-10-27 23:48:04,652 INFO L226 Difference]: Without dead ends: 58418 [2020-10-27 23:48:04,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 23:48:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58418 states. [2020-10-27 23:48:08,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58418 to 16071. [2020-10-27 23:48:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16071 states. [2020-10-27 23:48:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16071 states to 16071 states and 23551 transitions. [2020-10-27 23:48:08,969 INFO L78 Accepts]: Start accepts. Automaton has 16071 states and 23551 transitions. Word has length 70 [2020-10-27 23:48:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:08,969 INFO L481 AbstractCegarLoop]: Abstraction has 16071 states and 23551 transitions. [2020-10-27 23:48:08,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:48:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16071 states and 23551 transitions. [2020-10-27 23:48:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 23:48:08,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:08,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:08,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:48:08,973 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:08,973 INFO L82 PathProgramCache]: Analyzing trace with hash 264040626, now seen corresponding path program 1 times [2020-10-27 23:48:08,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909549193] [2020-10-27 23:48:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:48:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:48:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:48:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:14,233 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:14,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909549193] [2020-10-27 23:48:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:14,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:48:14,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614166280] [2020-10-27 23:48:14,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:48:14,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:14,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:48:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:48:14,259 INFO L87 Difference]: Start difference. First operand 16071 states and 23551 transitions. Second operand 6 states. [2020-10-27 23:48:14,500 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:15,762 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:48:15,987 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:26,364 INFO L93 Difference]: Finished difference Result 42989 states and 63214 transitions. [2020-10-27 23:48:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:48:26,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-27 23:48:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:26,409 INFO L225 Difference]: With dead ends: 42989 [2020-10-27 23:48:26,409 INFO L226 Difference]: Without dead ends: 38474 [2020-10-27 23:48:26,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:48:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states.