/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:59:37,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:59:37,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:59:37,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:59:37,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:59:37,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:59:37,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:59:37,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:59:37,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:59:37,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:59:37,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:59:37,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:59:37,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:59:37,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:59:37,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:59:37,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:59:37,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:59:37,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:59:37,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:59:37,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:59:37,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:59:37,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:59:37,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:59:37,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:59:37,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:59:37,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:59:37,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:59:37,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:59:37,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:59:37,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:59:37,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:59:37,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:59:37,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:59:37,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:59:37,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:59:37,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:59:37,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:59:37,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:59:37,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:59:37,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:59:37,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:59:37,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:59:37,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:59:37,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:59:37,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:59:37,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:59:37,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:59:37,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:59:37,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:59:37,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:59:37,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:59:37,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:59:37,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:59:37,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:59:37,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:59:37,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:59:37,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:59:37,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:59:37,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:59:37,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:59:37,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:59:37,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:59:37,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:59:37,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:59:37,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:59:37,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:59:37,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:59:37,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:59:37,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:59:37,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:59:37,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:59:37,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:59:37,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 12:59:38,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc57a9bb6/09eb74a6755440b19710d790b5491ac1/FLAG141ff801b [2020-10-29 12:59:38,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:59:38,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 12:59:38,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc57a9bb6/09eb74a6755440b19710d790b5491ac1/FLAG141ff801b [2020-10-29 12:59:39,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc57a9bb6/09eb74a6755440b19710d790b5491ac1 [2020-10-29 12:59:39,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:59:39,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:59:39,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:59:39,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:59:39,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:59:39,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d68be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39, skipping insertion in model container [2020-10-29 12:59:39,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:59:39,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:59:39,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:59:39,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:59:39,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:59:39,863 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:59:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39 WrapperNode [2020-10-29 12:59:39,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:59:39,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:59:39,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:59:39,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:59:39,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:39,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... [2020-10-29 12:59:40,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:59:40,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:59:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:59:40,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:59:40,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:59:40,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:59:40,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:59:40,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:59:40,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:59:40,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:59:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:59:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:59:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:59:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:59:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:59:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:59:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:59:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:59:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:59:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:59:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:59:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:59:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:59:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:59:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:59:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:59:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:59:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:59:41,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:59:41,741 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:59:41,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:59:41 BoogieIcfgContainer [2020-10-29 12:59:41,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:59:41,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:59:41,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:59:41,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:59:41,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:59:39" (1/3) ... [2020-10-29 12:59:41,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cf3e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:59:41, skipping insertion in model container [2020-10-29 12:59:41,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:39" (2/3) ... [2020-10-29 12:59:41,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cf3e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:59:41, skipping insertion in model container [2020-10-29 12:59:41,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:59:41" (3/3) ... [2020-10-29 12:59:41,753 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 12:59:41,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:59:41,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:59:41,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:59:41,816 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:59:41,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:59:41,816 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:59:41,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:59:41,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:59:41,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:59:41,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:59:41,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:59:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2020-10-29 12:59:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 12:59:41,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:41,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:59:41,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1270658696, now seen corresponding path program 1 times [2020-10-29 12:59:41,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:41,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946184107] [2020-10-29 12:59:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:47,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:47,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 12:59:47,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:59:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:59:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:47,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:59:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:59:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:59:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 12:59:47,932 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:59:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:47,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:59:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:47,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:59:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:59:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:59:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:48,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946184107] [2020-10-29 12:59:48,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:48,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:59:48,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907438817] [2020-10-29 12:59:48,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:59:48,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:59:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:59:48,096 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 4 states. [2020-10-29 12:59:48,707 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 12:59:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:50,800 INFO L93 Difference]: Finished difference Result 647 states and 1128 transitions. [2020-10-29 12:59:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:59:50,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-29 12:59:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:50,826 INFO L225 Difference]: With dead ends: 647 [2020-10-29 12:59:50,827 INFO L226 Difference]: Without dead ends: 516 [2020-10-29 12:59:50,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:59:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-29 12:59:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-10-29 12:59:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-29 12:59:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 762 transitions. [2020-10-29 12:59:50,938 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 762 transitions. Word has length 151 [2020-10-29 12:59:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:59:50,940 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 762 transitions. [2020-10-29 12:59:50,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:59:50,940 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 762 transitions. [2020-10-29 12:59:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 12:59:50,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:50,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:59:50,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:59:50,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1027994380, now seen corresponding path program 1 times [2020-10-29 12:59:50,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:50,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390023396] [2020-10-29 12:59:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:51,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:56,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 12:59:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 12:59:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:59:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:56,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:59:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:59:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 12:59:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:59:56,601 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:59:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:56,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:56,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:59:56,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:56,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:59:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:59:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:59:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:56,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390023396] [2020-10-29 12:59:56,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:56,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:59:56,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085875153] [2020-10-29 12:59:56,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:59:56,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:56,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:59:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:59:56,734 INFO L87 Difference]: Start difference. First operand 513 states and 762 transitions. Second operand 5 states. [2020-10-29 12:59:58,981 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:00:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:00,028 INFO L93 Difference]: Finished difference Result 1476 states and 2186 transitions. [2020-10-29 13:00:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:00,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 13:00:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:00,038 INFO L225 Difference]: With dead ends: 1476 [2020-10-29 13:00:00,038 INFO L226 Difference]: Without dead ends: 988 [2020-10-29 13:00:00,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-29 13:00:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 985. [2020-10-29 13:00:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-10-29 13:00:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1449 transitions. [2020-10-29 13:00:00,144 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1449 transitions. Word has length 151 [2020-10-29 13:00:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:00,145 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1449 transitions. [2020-10-29 13:00:00,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1449 transitions. [2020-10-29 13:00:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 13:00:00,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:00,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:00,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:00:00,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:00,154 INFO L82 PathProgramCache]: Analyzing trace with hash -671448548, now seen corresponding path program 1 times [2020-10-29 13:00:00,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:00,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799466540] [2020-10-29 13:00:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 13:00:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:00:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:00:05,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:05,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:00:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:05,784 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:05,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799466540] [2020-10-29 13:00:05,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:05,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:05,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664169769] [2020-10-29 13:00:05,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:05,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:05,901 INFO L87 Difference]: Start difference. First operand 985 states and 1449 transitions. Second operand 5 states. [2020-10-29 13:00:08,137 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:00:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:09,124 INFO L93 Difference]: Finished difference Result 2861 states and 4198 transitions. [2020-10-29 13:00:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:09,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 13:00:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:09,136 INFO L225 Difference]: With dead ends: 2861 [2020-10-29 13:00:09,136 INFO L226 Difference]: Without dead ends: 1904 [2020-10-29 13:00:09,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-29 13:00:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1901. [2020-10-29 13:00:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-29 13:00:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2767 transitions. [2020-10-29 13:00:09,268 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2767 transitions. Word has length 152 [2020-10-29 13:00:09,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:09,269 INFO L481 AbstractCegarLoop]: Abstraction has 1901 states and 2767 transitions. [2020-10-29 13:00:09,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2767 transitions. [2020-10-29 13:00:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 13:00:09,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:09,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:09,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:00:09,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 428596911, now seen corresponding path program 1 times [2020-10-29 13:00:09,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:09,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683979512] [2020-10-29 13:00:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:14,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:14,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 13:00:14,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:00:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:00:14,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:14,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:00:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:14,837 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:14,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:14,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:14,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:14,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683979512] [2020-10-29 13:00:14,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:14,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:14,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40999690] [2020-10-29 13:00:14,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:14,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:14,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:14,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:14,946 INFO L87 Difference]: Start difference. First operand 1901 states and 2767 transitions. Second operand 5 states. [2020-10-29 13:00:17,340 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:00:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:18,522 INFO L93 Difference]: Finished difference Result 5387 states and 7829 transitions. [2020-10-29 13:00:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:18,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 13:00:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:18,547 INFO L225 Difference]: With dead ends: 5387 [2020-10-29 13:00:18,547 INFO L226 Difference]: Without dead ends: 3654 [2020-10-29 13:00:18,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2020-10-29 13:00:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3651. [2020-10-29 13:00:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-10-29 13:00:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5248 transitions. [2020-10-29 13:00:18,838 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5248 transitions. Word has length 153 [2020-10-29 13:00:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:18,838 INFO L481 AbstractCegarLoop]: Abstraction has 3651 states and 5248 transitions. [2020-10-29 13:00:18,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5248 transitions. [2020-10-29 13:00:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 13:00:18,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:18,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:18,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:00:18,848 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash -128252866, now seen corresponding path program 1 times [2020-10-29 13:00:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296465673] [2020-10-29 13:00:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 13:00:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:00:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:00:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:00:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:24,401 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:24,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:24,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296465673] [2020-10-29 13:00:24,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:24,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:24,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016245469] [2020-10-29 13:00:24,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:24,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:24,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:24,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:24,514 INFO L87 Difference]: Start difference. First operand 3651 states and 5248 transitions. Second operand 5 states. [2020-10-29 13:00:27,009 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:00:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:28,181 INFO L93 Difference]: Finished difference Result 10193 states and 14696 transitions. [2020-10-29 13:00:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:28,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 13:00:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:28,215 INFO L225 Difference]: With dead ends: 10193 [2020-10-29 13:00:28,216 INFO L226 Difference]: Without dead ends: 7058 [2020-10-29 13:00:28,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2020-10-29 13:00:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 7055. [2020-10-29 13:00:28,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7055 states. [2020-10-29 13:00:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 10012 transitions. [2020-10-29 13:00:28,762 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 10012 transitions. Word has length 154 [2020-10-29 13:00:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:28,762 INFO L481 AbstractCegarLoop]: Abstraction has 7055 states and 10012 transitions. [2020-10-29 13:00:28,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 10012 transitions. [2020-10-29 13:00:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 13:00:28,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:28,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:28,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:00:28,775 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1749112112, now seen corresponding path program 1 times [2020-10-29 13:00:28,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:28,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612930827] [2020-10-29 13:00:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:33,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 13:00:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:34,323 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:34,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:00:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:34,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:00:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:34,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612930827] [2020-10-29 13:00:34,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:34,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:34,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877007740] [2020-10-29 13:00:34,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:34,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:34,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:34,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:34,457 INFO L87 Difference]: Start difference. First operand 7055 states and 10012 transitions. Second operand 5 states. [2020-10-29 13:00:36,818 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:00:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:37,975 INFO L93 Difference]: Finished difference Result 18973 states and 26788 transitions. [2020-10-29 13:00:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:37,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 13:00:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:38,031 INFO L225 Difference]: With dead ends: 18973 [2020-10-29 13:00:38,031 INFO L226 Difference]: Without dead ends: 12294 [2020-10-29 13:00:38,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2020-10-29 13:00:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12291. [2020-10-29 13:00:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12291 states. [2020-10-29 13:00:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12291 states to 12291 states and 17100 transitions. [2020-10-29 13:00:38,944 INFO L78 Accepts]: Start accepts. Automaton has 12291 states and 17100 transitions. Word has length 155 [2020-10-29 13:00:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:38,945 INFO L481 AbstractCegarLoop]: Abstraction has 12291 states and 17100 transitions. [2020-10-29 13:00:38,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12291 states and 17100 transitions. [2020-10-29 13:00:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 13:00:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:38,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:38,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:00:38,967 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1009196287, now seen corresponding path program 1 times [2020-10-29 13:00:38,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:38,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713089131] [2020-10-29 13:00:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:43,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:43,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 13:00:43,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:00:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:00:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:43,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:00:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:00:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:44,387 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:44,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:44,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:44,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:44,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713089131] [2020-10-29 13:00:44,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:44,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:44,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891776502] [2020-10-29 13:00:44,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:44,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:44,451 INFO L87 Difference]: Start difference. First operand 12291 states and 17100 transitions. Second operand 5 states. [2020-10-29 13:00:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:46,509 INFO L93 Difference]: Finished difference Result 20960 states and 29159 transitions. [2020-10-29 13:00:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:00:46,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 13:00:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:46,530 INFO L225 Difference]: With dead ends: 20960 [2020-10-29 13:00:46,530 INFO L226 Difference]: Without dead ends: 8761 [2020-10-29 13:00:46,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:00:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8761 states. [2020-10-29 13:00:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8761 to 8759. [2020-10-29 13:00:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8759 states. [2020-10-29 13:00:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8759 states to 8759 states and 12189 transitions. [2020-10-29 13:00:47,073 INFO L78 Accepts]: Start accepts. Automaton has 8759 states and 12189 transitions. Word has length 156 [2020-10-29 13:00:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:47,073 INFO L481 AbstractCegarLoop]: Abstraction has 8759 states and 12189 transitions. [2020-10-29 13:00:47,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8759 states and 12189 transitions. [2020-10-29 13:00:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 13:00:47,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:47,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:47,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:00:47,088 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:47,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1001025839, now seen corresponding path program 1 times [2020-10-29 13:00:47,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:47,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440591538] [2020-10-29 13:00:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:47,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:52,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:00:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:00:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 13:00:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:52,581 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:00:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:52,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:00:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:52,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:00:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:00:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:52,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440591538] [2020-10-29 13:00:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:52,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:52,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886746930] [2020-10-29 13:00:52,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:00:52,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:52,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:00:52,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:00:52,690 INFO L87 Difference]: Start difference. First operand 8759 states and 12189 transitions. Second operand 6 states. [2020-10-29 13:00:53,091 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:00:55,055 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 13:00:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:56,025 INFO L93 Difference]: Finished difference Result 21571 states and 30427 transitions. [2020-10-29 13:00:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:00:56,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-29 13:00:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:56,059 INFO L225 Difference]: With dead ends: 21571 [2020-10-29 13:00:56,059 INFO L226 Difference]: Without dead ends: 13896 [2020-10-29 13:00:56,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:00:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13896 states. [2020-10-29 13:00:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13896 to 13893. [2020-10-29 13:00:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13893 states. [2020-10-29 13:00:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13893 states to 13893 states and 19389 transitions. [2020-10-29 13:00:57,059 INFO L78 Accepts]: Start accepts. Automaton has 13893 states and 19389 transitions. Word has length 163 [2020-10-29 13:00:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:57,060 INFO L481 AbstractCegarLoop]: Abstraction has 13893 states and 19389 transitions. [2020-10-29 13:00:57,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:00:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 13893 states and 19389 transitions. [2020-10-29 13:00:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 13:00:57,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:57,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:57,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:00:57,078 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 918914572, now seen corresponding path program 1 times [2020-10-29 13:00:57,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:57,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084702827] [2020-10-29 13:00:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 13:01:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:01:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:01:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:02,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 13:01:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:02,647 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:01:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:02,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084702827] [2020-10-29 13:01:02,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:02,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:02,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151639373] [2020-10-29 13:01:02,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:02,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:02,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:02,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:02,735 INFO L87 Difference]: Start difference. First operand 13893 states and 19389 transitions. Second operand 5 states. [2020-10-29 13:01:03,106 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 13:01:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:06,800 INFO L93 Difference]: Finished difference Result 24962 states and 34809 transitions. [2020-10-29 13:01:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:06,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-29 13:01:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:06,835 INFO L225 Difference]: With dead ends: 24962 [2020-10-29 13:01:06,835 INFO L226 Difference]: Without dead ends: 13884 [2020-10-29 13:01:06,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:01:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2020-10-29 13:01:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 13881. [2020-10-29 13:01:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13881 states. [2020-10-29 13:01:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 19299 transitions. [2020-10-29 13:01:07,794 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 19299 transitions. Word has length 163 [2020-10-29 13:01:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:07,795 INFO L481 AbstractCegarLoop]: Abstraction has 13881 states and 19299 transitions. [2020-10-29 13:01:07,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 19299 transitions. [2020-10-29 13:01:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 13:01:07,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:07,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:07,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:01:07,813 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1934456712, now seen corresponding path program 1 times [2020-10-29 13:01:07,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:07,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137774615] [2020-10-29 13:01:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 13:01:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:01:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:13,216 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:01:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:13,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:13,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:01:13,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:13,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:13,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137774615] [2020-10-29 13:01:13,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:13,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:01:13,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472070742] [2020-10-29 13:01:13,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:01:13,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:13,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:01:13,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:01:13,282 INFO L87 Difference]: Start difference. First operand 13881 states and 19299 transitions. Second operand 4 states. [2020-10-29 13:01:16,333 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 13:01:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:18,036 INFO L93 Difference]: Finished difference Result 39151 states and 54590 transitions. [2020-10-29 13:01:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:01:18,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-29 13:01:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:18,075 INFO L225 Difference]: With dead ends: 39151 [2020-10-29 13:01:18,076 INFO L226 Difference]: Without dead ends: 26526 [2020-10-29 13:01:18,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26526 states. [2020-10-29 13:01:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26526 to 26523. [2020-10-29 13:01:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26523 states. [2020-10-29 13:01:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26523 states to 26523 states and 36408 transitions. [2020-10-29 13:01:20,198 INFO L78 Accepts]: Start accepts. Automaton has 26523 states and 36408 transitions. Word has length 164 [2020-10-29 13:01:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:20,198 INFO L481 AbstractCegarLoop]: Abstraction has 26523 states and 36408 transitions. [2020-10-29 13:01:20,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:01:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 26523 states and 36408 transitions. [2020-10-29 13:01:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 13:01:20,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:20,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:20,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:01:20,230 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1355663109, now seen corresponding path program 1 times [2020-10-29 13:01:20,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:20,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112194949] [2020-10-29 13:01:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:01:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:25,649 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:01:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:25,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112194949] [2020-10-29 13:01:25,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:25,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:25,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200622502] [2020-10-29 13:01:25,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:25,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:25,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:25,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:25,733 INFO L87 Difference]: Start difference. First operand 26523 states and 36408 transitions. Second operand 5 states. [2020-10-29 13:01:28,780 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:01:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:30,542 INFO L93 Difference]: Finished difference Result 53467 states and 73269 transitions. [2020-10-29 13:01:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:30,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-29 13:01:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:30,572 INFO L225 Difference]: With dead ends: 53467 [2020-10-29 13:01:30,572 INFO L226 Difference]: Without dead ends: 26960 [2020-10-29 13:01:30,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26960 states. [2020-10-29 13:01:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26960 to 26796. [2020-10-29 13:01:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26796 states. [2020-10-29 13:01:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26796 states to 26796 states and 36690 transitions. [2020-10-29 13:01:33,153 INFO L78 Accepts]: Start accepts. Automaton has 26796 states and 36690 transitions. Word has length 164 [2020-10-29 13:01:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:33,153 INFO L481 AbstractCegarLoop]: Abstraction has 26796 states and 36690 transitions. [2020-10-29 13:01:33,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 26796 states and 36690 transitions. [2020-10-29 13:01:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 13:01:33,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:33,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:33,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:01:33,174 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash 715222189, now seen corresponding path program 1 times [2020-10-29 13:01:33,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:33,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467160127] [2020-10-29 13:01:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:33,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:38,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:01:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 13:01:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 13:01:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:38,586 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:01:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:38,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:38,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467160127] [2020-10-29 13:01:38,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:38,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:01:38,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009159098] [2020-10-29 13:01:38,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:01:38,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:01:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:01:38,650 INFO L87 Difference]: Start difference. First operand 26796 states and 36690 transitions. Second operand 4 states. [2020-10-29 13:01:39,022 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:01:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:43,342 INFO L93 Difference]: Finished difference Result 56472 states and 80206 transitions. [2020-10-29 13:01:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:01:43,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-29 13:01:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:43,385 INFO L225 Difference]: With dead ends: 56472 [2020-10-29 13:01:43,385 INFO L226 Difference]: Without dead ends: 44903 [2020-10-29 13:01:43,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44903 states. [2020-10-29 13:01:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44903 to 44900. [2020-10-29 13:01:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44900 states. [2020-10-29 13:01:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44900 states to 44900 states and 61728 transitions. [2020-10-29 13:01:46,623 INFO L78 Accepts]: Start accepts. Automaton has 44900 states and 61728 transitions. Word has length 165 [2020-10-29 13:01:46,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:46,624 INFO L481 AbstractCegarLoop]: Abstraction has 44900 states and 61728 transitions. [2020-10-29 13:01:46,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:01:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 44900 states and 61728 transitions. [2020-10-29 13:01:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 13:01:46,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:46,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:46,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:01:46,652 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:46,652 INFO L82 PathProgramCache]: Analyzing trace with hash -872444025, now seen corresponding path program 1 times [2020-10-29 13:01:46,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:46,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160201050] [2020-10-29 13:01:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 13:01:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:01:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:51,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 13:01:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 13:01:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:01:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:52,703 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:01:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:01:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:52,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:52,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160201050] [2020-10-29 13:01:52,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:52,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 13:01:52,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586256140] [2020-10-29 13:01:52,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 13:01:52,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 13:01:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:01:52,911 INFO L87 Difference]: Start difference. First operand 44900 states and 61728 transitions. Second operand 12 states. [2020-10-29 13:01:53,074 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-29 13:01:54,372 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 258 DAG size of output: 246 [2020-10-29 13:02:13,739 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 40 [2020-10-29 13:03:20,375 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 220