/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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:02:49,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:02:49,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:02:49,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:02:49,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:02:49,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:02:49,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:02:49,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:02:49,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:02:49,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:02:49,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:02:49,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:02:49,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:02:49,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:02:49,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:02:49,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:02:49,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:02:49,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:02:49,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:02:49,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:02:49,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:02:49,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:02:49,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:02:49,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:02:49,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:02:49,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:02:49,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:02:49,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:02:49,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:02:49,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:02:49,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:02:49,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:02:49,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:02:49,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:02:49,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:02:49,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:02:49,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:02:49,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:02:49,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:02:49,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:02:49,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:02:49,682 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 14:02:49,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:02:49,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:02:49,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:02:49,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:02:49,746 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:02:49,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:02:49,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:02:49,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:02:49,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:02:49,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:02:49,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:02:49,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:02:49,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:02:49,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:02:49,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:02:49,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:02:49,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:02:49,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:02:49,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:02:49,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:02:49,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:02:49,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:02:49,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:02:49,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:02:49,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:02:49,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:02:49,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:02:49,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:02:49,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:02:49,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:02:50,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:02:50,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:02:50,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:02:50,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:02:50,237 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:02:50,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 14:02:50,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c4d5a2c/01d1945203114e1f86cebeb8890b4705/FLAG411232b0c [2020-10-29 14:02:51,184 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:02:51,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 14:02:51,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c4d5a2c/01d1945203114e1f86cebeb8890b4705/FLAG411232b0c [2020-10-29 14:02:51,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c4d5a2c/01d1945203114e1f86cebeb8890b4705 [2020-10-29 14:02:51,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:02:51,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:02:51,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:02:51,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:02:51,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:02:51,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:02:51" (1/1) ... [2020-10-29 14:02:51,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa641a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:51, skipping insertion in model container [2020-10-29 14:02:51,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:02:51" (1/1) ... [2020-10-29 14:02:51,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:02:51,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:02:52,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:02:52,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:02:52,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:02:52,274 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:02:52,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52 WrapperNode [2020-10-29 14:02:52,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:02:52,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:02:52,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:02:52,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:02:52,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (1/1) ... [2020-10-29 14:02:52,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:02:52,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:02:52,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:02:52,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:02:52,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (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 14:02:52,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:02:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:02:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:02:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:02:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:02:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:02:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:02:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:02:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:02:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:02:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:02:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:02:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:02:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:02:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:02:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:02:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:02:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:02:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:02:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:02:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:02:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:02:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:02:54,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:02:54,124 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:02:54,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:02:54 BoogieIcfgContainer [2020-10-29 14:02:54,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:02:54,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:02:54,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:02:54,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:02:54,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:02:51" (1/3) ... [2020-10-29 14:02:54,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5156f751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:02:54, skipping insertion in model container [2020-10-29 14:02:54,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:52" (2/3) ... [2020-10-29 14:02:54,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5156f751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:02:54, skipping insertion in model container [2020-10-29 14:02:54,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:02:54" (3/3) ... [2020-10-29 14:02:54,140 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 14:02:54,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:02:54,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:02:54,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:02:54,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:02:54,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:02:54,217 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:02:54,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:02:54,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:02:54,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:02:54,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:02:54,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:02:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-10-29 14:02:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:02:54,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:54,284 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] [2020-10-29 14:02:54,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash -477280769, now seen corresponding path program 1 times [2020-10-29 14:02:54,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:54,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253769697] [2020-10-29 14:02:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:59,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:02:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 14:02:59,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:59,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 14:02:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:02:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:03:00,341 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 14:03:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:00,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:00,464 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 14:03:00,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253769697] [2020-10-29 14:03:00,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:00,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974266291] [2020-10-29 14:03:00,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:00,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:00,496 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 4 states. [2020-10-29 14:03:00,892 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 14:03:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:03,093 INFO L93 Difference]: Finished difference Result 697 states and 1202 transitions. [2020-10-29 14:03:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:03,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-29 14:03:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:03,138 INFO L225 Difference]: With dead ends: 697 [2020-10-29 14:03:03,138 INFO L226 Difference]: Without dead ends: 563 [2020-10-29 14:03:03,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:03,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-29 14:03:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2020-10-29 14:03:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-29 14:03:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 835 transitions. [2020-10-29 14:03:03,308 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 835 transitions. Word has length 160 [2020-10-29 14:03:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:03,309 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 835 transitions. [2020-10-29 14:03:03,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 835 transitions. [2020-10-29 14:03:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:03:03,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:03,313 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] [2020-10-29 14:03:03,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:03:03,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash -955239738, now seen corresponding path program 1 times [2020-10-29 14:03:03,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:03,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790770673] [2020-10-29 14:03:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:08,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:03:08,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:03:08,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:08,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:03:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 14:03:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:03:08,820 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:08,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:03:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:08,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:08,922 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 14:03:08,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790770673] [2020-10-29 14:03:08,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:08,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:08,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538015403] [2020-10-29 14:03:08,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:08,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:08,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:08,943 INFO L87 Difference]: Start difference. First operand 560 states and 835 transitions. Second operand 4 states. [2020-10-29 14:03:09,373 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 14:03:11,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:11,191 INFO L93 Difference]: Finished difference Result 1190 states and 1822 transitions. [2020-10-29 14:03:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:11,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-29 14:03:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:11,199 INFO L225 Difference]: With dead ends: 1190 [2020-10-29 14:03:11,199 INFO L226 Difference]: Without dead ends: 975 [2020-10-29 14:03:11,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-29 14:03:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2020-10-29 14:03:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-29 14:03:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1463 transitions. [2020-10-29 14:03:11,256 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1463 transitions. Word has length 160 [2020-10-29 14:03:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:11,257 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1463 transitions. [2020-10-29 14:03:11,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1463 transitions. [2020-10-29 14:03:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:03:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:11,261 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] [2020-10-29 14:03:11,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:03:11,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:11,263 INFO L82 PathProgramCache]: Analyzing trace with hash 883241763, now seen corresponding path program 1 times [2020-10-29 14:03:11,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:11,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875189611] [2020-10-29 14:03:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:16,931 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:16,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:03:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:16,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:17,067 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 14:03:17,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875189611] [2020-10-29 14:03:17,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:17,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:17,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197584746] [2020-10-29 14:03:17,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:17,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:17,070 INFO L87 Difference]: Start difference. First operand 972 states and 1463 transitions. Second operand 5 states. [2020-10-29 14:03:19,482 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:03:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:20,689 INFO L93 Difference]: Finished difference Result 2826 states and 4242 transitions. [2020-10-29 14:03:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:20,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 14:03:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:20,701 INFO L225 Difference]: With dead ends: 2826 [2020-10-29 14:03:20,701 INFO L226 Difference]: Without dead ends: 1871 [2020-10-29 14:03:20,705 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 14:03:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-10-29 14:03:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1868. [2020-10-29 14:03:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1868 states. [2020-10-29 14:03:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2780 transitions. [2020-10-29 14:03:20,807 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2780 transitions. Word has length 160 [2020-10-29 14:03:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:20,808 INFO L481 AbstractCegarLoop]: Abstraction has 1868 states and 2780 transitions. [2020-10-29 14:03:20,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2780 transitions. [2020-10-29 14:03:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 14:03:20,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:20,813 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] [2020-10-29 14:03:20,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:03:20,814 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2122433253, now seen corresponding path program 1 times [2020-10-29 14:03:20,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:20,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853084415] [2020-10-29 14:03:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:25,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:25,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 14:03:25,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:03:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:03:25,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:25,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:03:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:26,528 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:26,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:26,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:03:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:26,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:26,636 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 14:03:26,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853084415] [2020-10-29 14:03:26,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:26,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:26,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543020659] [2020-10-29 14:03:26,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:26,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:26,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:26,641 INFO L87 Difference]: Start difference. First operand 1868 states and 2780 transitions. Second operand 5 states. [2020-10-29 14:03:29,145 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:03:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:30,334 INFO L93 Difference]: Finished difference Result 5294 states and 7882 transitions. [2020-10-29 14:03:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:30,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 14:03:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:30,357 INFO L225 Difference]: With dead ends: 5294 [2020-10-29 14:03:30,357 INFO L226 Difference]: Without dead ends: 3615 [2020-10-29 14:03:30,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-10-29 14:03:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3612. [2020-10-29 14:03:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-29 14:03:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5320 transitions. [2020-10-29 14:03:30,598 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5320 transitions. Word has length 161 [2020-10-29 14:03:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:30,599 INFO L481 AbstractCegarLoop]: Abstraction has 3612 states and 5320 transitions. [2020-10-29 14:03:30,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5320 transitions. [2020-10-29 14:03:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 14:03:30,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:30,606 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] [2020-10-29 14:03:30,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:03:30,606 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:30,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1984575131, now seen corresponding path program 1 times [2020-10-29 14:03:30,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:30,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907822846] [2020-10-29 14:03:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:35,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:35,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 14:03:35,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:03:35,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:35,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:03:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:36,068 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:36,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:36,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:03:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:36,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:36,164 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 14:03:36,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907822846] [2020-10-29 14:03:36,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:36,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:36,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200613577] [2020-10-29 14:03:36,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:36,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:36,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:36,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:36,167 INFO L87 Difference]: Start difference. First operand 3612 states and 5320 transitions. Second operand 5 states. [2020-10-29 14:03:38,450 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:03:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:39,574 INFO L93 Difference]: Finished difference Result 9841 states and 14435 transitions. [2020-10-29 14:03:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:39,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-29 14:03:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:39,607 INFO L225 Difference]: With dead ends: 9841 [2020-10-29 14:03:39,607 INFO L226 Difference]: Without dead ends: 6268 [2020-10-29 14:03:39,616 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 14:03:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2020-10-29 14:03:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6265. [2020-10-29 14:03:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6265 states. [2020-10-29 14:03:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 9096 transitions. [2020-10-29 14:03:39,978 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 9096 transitions. Word has length 162 [2020-10-29 14:03:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:39,979 INFO L481 AbstractCegarLoop]: Abstraction has 6265 states and 9096 transitions. [2020-10-29 14:03:39,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 9096 transitions. [2020-10-29 14:03:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 14:03:39,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:39,989 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 14:03:39,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:03:39,989 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1512287002, now seen corresponding path program 1 times [2020-10-29 14:03:39,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:39,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975184843] [2020-10-29 14:03:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 14:03:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:45,583 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:45,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:03:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:45,745 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 14:03:45,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975184843] [2020-10-29 14:03:45,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:45,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:45,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775876041] [2020-10-29 14:03:45,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:45,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:45,753 INFO L87 Difference]: Start difference. First operand 6265 states and 9096 transitions. Second operand 5 states. [2020-10-29 14:03:48,130 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:03:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:49,369 INFO L93 Difference]: Finished difference Result 18221 states and 26342 transitions. [2020-10-29 14:03:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:49,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-29 14:03:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:49,423 INFO L225 Difference]: With dead ends: 18221 [2020-10-29 14:03:49,424 INFO L226 Difference]: Without dead ends: 12060 [2020-10-29 14:03:49,441 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 14:03:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2020-10-29 14:03:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 12057. [2020-10-29 14:03:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12057 states. [2020-10-29 14:03:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12057 states to 12057 states and 17268 transitions. [2020-10-29 14:03:50,243 INFO L78 Accepts]: Start accepts. Automaton has 12057 states and 17268 transitions. Word has length 163 [2020-10-29 14:03:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:50,243 INFO L481 AbstractCegarLoop]: Abstraction has 12057 states and 17268 transitions. [2020-10-29 14:03:50,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 12057 states and 17268 transitions. [2020-10-29 14:03:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 14:03:50,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:50,265 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 14:03:50,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:03:50,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash -405467929, now seen corresponding path program 1 times [2020-10-29 14:03:50,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:50,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839065695] [2020-10-29 14:03:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:03:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 14:03:55,718 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:03:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:55,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:55,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:55,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:03:55,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:55,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:55,814 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 14:03:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839065695] [2020-10-29 14:03:55,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:55,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:55,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939591332] [2020-10-29 14:03:55,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:55,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:55,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:55,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:55,816 INFO L87 Difference]: Start difference. First operand 12057 states and 17268 transitions. Second operand 5 states. [2020-10-29 14:03:58,559 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:04:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:00,046 INFO L93 Difference]: Finished difference Result 35011 states and 50009 transitions. [2020-10-29 14:04:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:00,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-29 14:04:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:00,109 INFO L225 Difference]: With dead ends: 35011 [2020-10-29 14:04:00,109 INFO L226 Difference]: Without dead ends: 23280 [2020-10-29 14:04:00,138 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 14:04:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23280 states. [2020-10-29 14:04:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23280 to 23277. [2020-10-29 14:04:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23277 states. [2020-10-29 14:04:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23277 states to 23277 states and 32896 transitions. [2020-10-29 14:04:01,394 INFO L78 Accepts]: Start accepts. Automaton has 23277 states and 32896 transitions. Word has length 164 [2020-10-29 14:04:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:01,394 INFO L481 AbstractCegarLoop]: Abstraction has 23277 states and 32896 transitions. [2020-10-29 14:04:01,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23277 states and 32896 transitions. [2020-10-29 14:04:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 14:04:01,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:01,430 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 14:04:01,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:04:01,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1013213274, now seen corresponding path program 1 times [2020-10-29 14:04:01,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:01,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342200868] [2020-10-29 14:04:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 14:04:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 14:04:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:06,875 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:04:06,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:06,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:06,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:06,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:04:06,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:06,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:06,936 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 14:04:06,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342200868] [2020-10-29 14:04:06,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:06,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:06,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593033305] [2020-10-29 14:04:06,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:06,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:06,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:06,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:06,939 INFO L87 Difference]: Start difference. First operand 23277 states and 32896 transitions. Second operand 5 states. [2020-10-29 14:04:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:09,199 INFO L93 Difference]: Finished difference Result 38514 states and 54394 transitions. [2020-10-29 14:04:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:09,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-29 14:04:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:09,230 INFO L225 Difference]: With dead ends: 38514 [2020-10-29 14:04:09,231 INFO L226 Difference]: Without dead ends: 15439 [2020-10-29 14:04:09,269 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 14:04:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15439 states. [2020-10-29 14:04:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15439 to 15423. [2020-10-29 14:04:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15423 states. [2020-10-29 14:04:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15423 states to 15423 states and 21756 transitions. [2020-10-29 14:04:10,005 INFO L78 Accepts]: Start accepts. Automaton has 15423 states and 21756 transitions. Word has length 165 [2020-10-29 14:04:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:10,005 INFO L481 AbstractCegarLoop]: Abstraction has 15423 states and 21756 transitions. [2020-10-29 14:04:10,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 15423 states and 21756 transitions. [2020-10-29 14:04:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:04:10,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:10,035 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, 1, 1, 1, 1] [2020-10-29 14:04:10,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:04:10,035 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:10,036 INFO L82 PathProgramCache]: Analyzing trace with hash 887835063, now seen corresponding path program 1 times [2020-10-29 14:04:10,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:10,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016426598] [2020-10-29 14:04:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:15,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:15,581 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:04:15,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:15,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016426598] [2020-10-29 14:04:15,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:15,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:15,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391127961] [2020-10-29 14:04:15,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:15,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:15,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:15,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:15,642 INFO L87 Difference]: Start difference. First operand 15423 states and 21756 transitions. Second operand 5 states. [2020-10-29 14:04:18,531 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:04:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:20,469 INFO L93 Difference]: Finished difference Result 41387 states and 58214 transitions. [2020-10-29 14:04:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:20,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 14:04:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:20,524 INFO L225 Difference]: With dead ends: 41387 [2020-10-29 14:04:20,524 INFO L226 Difference]: Without dead ends: 26753 [2020-10-29 14:04:20,552 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 14:04:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26753 states. [2020-10-29 14:04:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26753 to 26750. [2020-10-29 14:04:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26750 states. [2020-10-29 14:04:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26750 states to 26750 states and 37055 transitions. [2020-10-29 14:04:22,326 INFO L78 Accepts]: Start accepts. Automaton has 26750 states and 37055 transitions. Word has length 169 [2020-10-29 14:04:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:22,326 INFO L481 AbstractCegarLoop]: Abstraction has 26750 states and 37055 transitions. [2020-10-29 14:04:22,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26750 states and 37055 transitions. [2020-10-29 14:04:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 14:04:22,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:22,369 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, 1, 1, 1, 1, 1] [2020-10-29 14:04:22,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:04:22,369 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:22,370 INFO L82 PathProgramCache]: Analyzing trace with hash 890718755, now seen corresponding path program 1 times [2020-10-29 14:04:22,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:22,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250556379] [2020-10-29 14:04:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 14:04:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:27,887 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:04:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:04:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:27,981 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 14:04:27,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250556379] [2020-10-29 14:04:27,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:27,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:04:27,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021029269] [2020-10-29 14:04:27,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:04:27,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:27,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:04:27,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:04:27,983 INFO L87 Difference]: Start difference. First operand 26750 states and 37055 transitions. Second operand 9 states. [2020-10-29 14:04:28,406 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:04:31,675 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:04:32,244 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:04:34,797 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:04:35,366 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:04:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:37,133 INFO L93 Difference]: Finished difference Result 89527 states and 126702 transitions. [2020-10-29 14:04:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:04:37,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-10-29 14:04:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:37,291 INFO L225 Difference]: With dead ends: 89527 [2020-10-29 14:04:37,292 INFO L226 Difference]: Without dead ends: 66039 [2020-10-29 14:04:37,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:04:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66039 states. [2020-10-29 14:04:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66039 to 32196. [2020-10-29 14:04:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32196 states. [2020-10-29 14:04:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32196 states to 32196 states and 44359 transitions. [2020-10-29 14:04:39,778 INFO L78 Accepts]: Start accepts. Automaton has 32196 states and 44359 transitions. Word has length 170 [2020-10-29 14:04:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:39,778 INFO L481 AbstractCegarLoop]: Abstraction has 32196 states and 44359 transitions. [2020-10-29 14:04:39,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:04:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 32196 states and 44359 transitions. [2020-10-29 14:04:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 14:04:39,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:39,800 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, 1, 1, 1, 1, 1] [2020-10-29 14:04:39,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:04:39,800 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 584630229, now seen corresponding path program 1 times [2020-10-29 14:04:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:39,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913455749] [2020-10-29 14:04:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:04:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:04:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:45,259 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:04:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:45,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:45,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:45,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:45,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:45,314 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 14:04:45,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913455749] [2020-10-29 14:04:45,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:45,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:45,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860655335] [2020-10-29 14:04:45,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:45,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:45,317 INFO L87 Difference]: Start difference. First operand 32196 states and 44359 transitions. Second operand 5 states. [2020-10-29 14:04:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:48,777 INFO L93 Difference]: Finished difference Result 58585 states and 80777 transitions. [2020-10-29 14:04:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:48,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-29 14:04:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:48,816 INFO L225 Difference]: With dead ends: 58585 [2020-10-29 14:04:48,817 INFO L226 Difference]: Without dead ends: 26708 [2020-10-29 14:04:48,847 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 14:04:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26708 states. [2020-10-29 14:04:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26708 to 26705. [2020-10-29 14:04:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26705 states. [2020-10-29 14:04:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26705 states to 26705 states and 36788 transitions. [2020-10-29 14:04:50,945 INFO L78 Accepts]: Start accepts. Automaton has 26705 states and 36788 transitions. Word has length 170 [2020-10-29 14:04:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:50,945 INFO L481 AbstractCegarLoop]: Abstraction has 26705 states and 36788 transitions. [2020-10-29 14:04:50,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26705 states and 36788 transitions. [2020-10-29 14:04:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 14:04:50,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:50,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:50,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:04:50,961 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:50,962 INFO L82 PathProgramCache]: Analyzing trace with hash -625090752, now seen corresponding path program 1 times [2020-10-29 14:04:50,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:50,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456417245] [2020-10-29 14:04:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:56,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:04:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 14:04:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:56,507 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:04:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:56,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:04:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:56,593 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 14:04:56,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456417245] [2020-10-29 14:04:56,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:56,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:04:56,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793261628] [2020-10-29 14:04:56,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:04:56,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:56,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:04:56,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:04:56,595 INFO L87 Difference]: Start difference. First operand 26705 states and 36788 transitions. Second operand 9 states. [2020-10-29 14:04:57,016 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:05:00,518 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:05:00,972 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:05:04,153 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:05:04,778 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:05:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:06,849 INFO L93 Difference]: Finished difference Result 96228 states and 135628 transitions. [2020-10-29 14:05:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:05:06,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-29 14:05:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:06,946 INFO L225 Difference]: With dead ends: 96228 [2020-10-29 14:05:06,946 INFO L226 Difference]: Without dead ends: 71603 [2020-10-29 14:05:06,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:05:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71603 states. [2020-10-29 14:05:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71603 to 41405. [2020-10-29 14:05:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41405 states. [2020-10-29 14:05:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41405 states to 41405 states and 56532 transitions. [2020-10-29 14:05:10,791 INFO L78 Accepts]: Start accepts. Automaton has 41405 states and 56532 transitions. Word has length 174 [2020-10-29 14:05:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:10,792 INFO L481 AbstractCegarLoop]: Abstraction has 41405 states and 56532 transitions. [2020-10-29 14:05:10,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:05:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 41405 states and 56532 transitions. [2020-10-29 14:05:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 14:05:10,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:10,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:10,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:05:10,814 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1113765149, now seen corresponding path program 1 times [2020-10-29 14:05:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:10,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511726830] [2020-10-29 14:05:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:10,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,367 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:05:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,418 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 14:05:16,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511726830] [2020-10-29 14:05:16,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:16,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:16,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018283500] [2020-10-29 14:05:16,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:16,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:16,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:16,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:16,420 INFO L87 Difference]: Start difference. First operand 41405 states and 56532 transitions. Second operand 5 states. [2020-10-29 14:05:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:20,441 INFO L93 Difference]: Finished difference Result 71868 states and 98101 transitions. [2020-10-29 14:05:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:05:20,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-29 14:05:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:20,477 INFO L225 Difference]: With dead ends: 71868 [2020-10-29 14:05:20,477 INFO L226 Difference]: Without dead ends: 30535 [2020-10-29 14:05:20,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:05:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30535 states. [2020-10-29 14:05:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30535 to 30535. [2020-10-29 14:05:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30535 states. [2020-10-29 14:05:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30535 states to 30535 states and 41662 transitions. [2020-10-29 14:05:23,283 INFO L78 Accepts]: Start accepts. Automaton has 30535 states and 41662 transitions. Word has length 174 [2020-10-29 14:05:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:23,284 INFO L481 AbstractCegarLoop]: Abstraction has 30535 states and 41662 transitions. [2020-10-29 14:05:23,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 30535 states and 41662 transitions. [2020-10-29 14:05:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 14:05:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:23,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:23,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:05:23,303 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1924240279, now seen corresponding path program 1 times [2020-10-29 14:05:23,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:23,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000879398] [2020-10-29 14:05:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:28,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 14:05:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:28,830 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:05:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:05:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:28,907 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 14:05:28,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000879398] [2020-10-29 14:05:28,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:28,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:05:28,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558454412] [2020-10-29 14:05:28,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:05:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:05:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:05:28,909 INFO L87 Difference]: Start difference. First operand 30535 states and 41662 transitions. Second operand 9 states. [2020-10-29 14:05:29,377 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:05:33,633 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:05:34,199 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:05:37,173 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:05:37,636 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:05:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:43,092 INFO L93 Difference]: Finished difference Result 120189 states and 168028 transitions. [2020-10-29 14:05:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:05:43,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-29 14:05:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:43,200 INFO L225 Difference]: With dead ends: 120189 [2020-10-29 14:05:43,200 INFO L226 Difference]: Without dead ends: 91222 [2020-10-29 14:05:43,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:05:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91222 states. [2020-10-29 14:05:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91222 to 51012. [2020-10-29 14:05:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51012 states. [2020-10-29 14:05:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51012 states to 51012 states and 69561 transitions. [2020-10-29 14:05:48,565 INFO L78 Accepts]: Start accepts. Automaton has 51012 states and 69561 transitions. Word has length 178 [2020-10-29 14:05:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:48,565 INFO L481 AbstractCegarLoop]: Abstraction has 51012 states and 69561 transitions. [2020-10-29 14:05:48,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:05:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 51012 states and 69561 transitions. [2020-10-29 14:05:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 14:05:48,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:48,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:48,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:05:48,583 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1207547212, now seen corresponding path program 1 times [2020-10-29 14:05:48,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:48,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553012629] [2020-10-29 14:05:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:49,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 14:05:49,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:05:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-29 14:05:49,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:49,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 14:05:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 14:05:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:49,872 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:05:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:05:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:49,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:49,936 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 14:05:49,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553012629] [2020-10-29 14:05:49,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:49,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:05:49,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652271923] [2020-10-29 14:05:49,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:05:49,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:49,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:05:49,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:05:49,941 INFO L87 Difference]: Start difference. First operand 51012 states and 69561 transitions. Second operand 4 states. [2020-10-29 14:05:55,811 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 14:06:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:00,301 INFO L93 Difference]: Finished difference Result 124624 states and 172019 transitions. [2020-10-29 14:06:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:06:00,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-29 14:06:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:00,410 INFO L225 Difference]: With dead ends: 124624 [2020-10-29 14:06:00,410 INFO L226 Difference]: Without dead ends: 76232 [2020-10-29 14:06:00,448 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 14:06:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76232 states. [2020-10-29 14:06:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76232 to 67785. [2020-10-29 14:06:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67785 states. [2020-10-29 14:06:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67785 states to 67785 states and 94600 transitions. [2020-10-29 14:06:07,925 INFO L78 Accepts]: Start accepts. Automaton has 67785 states and 94600 transitions. Word has length 178 [2020-10-29 14:06:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:07,925 INFO L481 AbstractCegarLoop]: Abstraction has 67785 states and 94600 transitions. [2020-10-29 14:06:07,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:06:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 67785 states and 94600 transitions. [2020-10-29 14:06:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 14:06:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:07,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:07,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:06:07,949 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1823890274, now seen corresponding path program 1 times [2020-10-29 14:06:07,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:07,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572088625] [2020-10-29 14:06:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 14:06:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 14:06:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:13,655 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:06:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:13,736 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 14:06:13,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572088625] [2020-10-29 14:06:13,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:13,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:06:13,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11439214] [2020-10-29 14:06:13,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:06:13,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:06:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:06:13,738 INFO L87 Difference]: Start difference. First operand 67785 states and 94600 transitions. Second operand 11 states. [2020-10-29 14:06:14,149 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211