/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:08:08,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:08:08,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:08:08,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:08:08,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:08:08,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:08:08,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:08:08,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:08:08,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:08:08,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:08:08,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:08:08,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:08:08,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:08:08,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:08:08,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:08:08,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:08:08,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:08:08,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:08:08,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:08:08,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:08:08,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:08:08,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:08:08,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:08:08,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:08:08,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:08:08,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:08:08,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:08:08,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:08:08,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:08:08,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:08:08,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:08:08,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:08:08,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:08:08,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:08:08,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:08:08,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:08:08,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:08:08,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:08:08,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:08:08,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:08:08,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:08:08,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:08:08,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:08:08,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:08:08,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:08:08,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:08:08,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:08:08,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:08:08,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:08:08,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:08:08,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:08:08,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:08:08,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:08:08,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:08:08,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:08:08,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:08:08,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:08:08,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:08:08,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:08:08,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:08:08,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:08:08,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:08:08,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:08:08,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:08:08,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:08:08,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:08:08,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:08:08,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:08:08,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:08:08,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:08:08,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:08:08,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:08:09,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:08:09,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:08:09,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:08:09,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:08:09,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:08:09,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:08:09,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/369717dc8/370abc8d835e4ef5a87730f0a2f9b174/FLAGcc176832c [2020-10-27 05:08:10,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:08:10,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:08:10,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/369717dc8/370abc8d835e4ef5a87730f0a2f9b174/FLAGcc176832c [2020-10-27 05:08:10,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/369717dc8/370abc8d835e4ef5a87730f0a2f9b174 [2020-10-27 05:08:10,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:08:10,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:08:10,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:08:10,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:08:10,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:08:10,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:10" (1/1) ... [2020-10-27 05:08:10,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426e7056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:10, skipping insertion in model container [2020-10-27 05:08:10,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:10" (1/1) ... [2020-10-27 05:08:10,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:08:10,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:08:13,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:08:13,181 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:08:14,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:08:14,672 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:08:14,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14 WrapperNode [2020-10-27 05:08:14,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:08:14,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:08:14,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:08:14,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:08:14,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... [2020-10-27 05:08:14,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:08:14,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:08:14,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:08:14,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:08:14,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:08:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:08:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:08:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:08:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:08:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:08:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:08:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:08:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:08:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:08:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:08:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:08:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:08:21,612 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:08:21,612 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:08:21,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:21 BoogieIcfgContainer [2020-10-27 05:08:21,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:08:21,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:08:21,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:08:21,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:08:21,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:08:10" (1/3) ... [2020-10-27 05:08:21,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1082d472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:21, skipping insertion in model container [2020-10-27 05:08:21,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:14" (2/3) ... [2020-10-27 05:08:21,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1082d472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:21, skipping insertion in model container [2020-10-27 05:08:21,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:21" (3/3) ... [2020-10-27 05:08:21,636 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:08:21,651 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:08:21,661 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:08:21,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:08:21,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:08:21,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:08:21,733 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:08:21,733 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:08:21,733 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:08:21,733 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:08:21,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:08:21,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:08:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states. [2020-10-27 05:08:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-27 05:08:21,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:21,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:21,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2058974461, now seen corresponding path program 1 times [2020-10-27 05:08:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:21,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022458506] [2020-10-27 05:08:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:27,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 05:08:27,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:08:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 05:08:27,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 05:08:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:08:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:08:28,952 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:08:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:29,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:08:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:29,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022458506] [2020-10-27 05:08:29,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:29,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:29,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362183295] [2020-10-27 05:08:29,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:29,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:29,190 INFO L87 Difference]: Start difference. First operand 2253 states. Second operand 5 states. [2020-10-27 05:08:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:47,737 INFO L93 Difference]: Finished difference Result 3960 states and 6891 transitions. [2020-10-27 05:08:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:47,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2020-10-27 05:08:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:47,786 INFO L225 Difference]: With dead ends: 3960 [2020-10-27 05:08:47,786 INFO L226 Difference]: Without dead ends: 2245 [2020-10-27 05:08:47,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:08:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-10-27 05:08:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-10-27 05:08:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-10-27 05:08:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3872 transitions. [2020-10-27 05:08:47,978 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3872 transitions. Word has length 291 [2020-10-27 05:08:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:47,980 INFO L481 AbstractCegarLoop]: Abstraction has 2245 states and 3872 transitions. [2020-10-27 05:08:47,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3872 transitions. [2020-10-27 05:08:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-27 05:08:47,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:47,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:47,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:08:47,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash 96496140, now seen corresponding path program 1 times [2020-10-27 05:08:47,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:47,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107946337] [2020-10-27 05:08:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-27 05:08:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:08:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 05:08:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:08:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:08:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:08:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:54,624 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:08:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:54,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:08:54,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:54,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107946337] [2020-10-27 05:08:54,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:54,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:08:54,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310243074] [2020-10-27 05:08:54,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:08:54,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:08:54,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:08:54,905 INFO L87 Difference]: Start difference. First operand 2245 states and 3872 transitions. Second operand 4 states. [2020-10-27 05:08:56,278 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 426 [2020-10-27 05:09:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:25,959 INFO L93 Difference]: Finished difference Result 5464 states and 9359 transitions. [2020-10-27 05:09:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:09:25,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2020-10-27 05:09:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:25,986 INFO L225 Difference]: With dead ends: 5464 [2020-10-27 05:09:25,986 INFO L226 Difference]: Without dead ends: 3801 [2020-10-27 05:09:25,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-10-27 05:09:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-10-27 05:09:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-10-27 05:09:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6465 transitions. [2020-10-27 05:09:26,126 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6465 transitions. Word has length 350 [2020-10-27 05:09:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:26,127 INFO L481 AbstractCegarLoop]: Abstraction has 3797 states and 6465 transitions. [2020-10-27 05:09:26,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:09:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6465 transitions. [2020-10-27 05:09:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 05:09:26,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:26,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:26,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:09:26,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:26,143 INFO L82 PathProgramCache]: Analyzing trace with hash -892013158, now seen corresponding path program 1 times [2020-10-27 05:09:26,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:26,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217125414] [2020-10-27 05:09:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-27 05:09:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:09:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:09:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:09:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:09:33,049 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:09:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:33,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:09:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:33,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217125414] [2020-10-27 05:09:33,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:33,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:33,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115079736] [2020-10-27 05:09:33,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:33,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:33,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:33,482 INFO L87 Difference]: Start difference. First operand 3797 states and 6465 transitions. Second operand 5 states. [2020-10-27 05:09:55,555 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 05:09:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:57,699 INFO L93 Difference]: Finished difference Result 11185 states and 19043 transitions. [2020-10-27 05:09:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:57,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-10-27 05:09:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:57,738 INFO L225 Difference]: With dead ends: 11185 [2020-10-27 05:09:57,738 INFO L226 Difference]: Without dead ends: 7465 [2020-10-27 05:09:57,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7465 states. [2020-10-27 05:09:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7465 to 7461. [2020-10-27 05:09:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7461 states. [2020-10-27 05:09:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 12680 transitions. [2020-10-27 05:09:58,154 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 12680 transitions. Word has length 354 [2020-10-27 05:09:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:58,154 INFO L481 AbstractCegarLoop]: Abstraction has 7461 states and 12680 transitions. [2020-10-27 05:09:58,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 12680 transitions. [2020-10-27 05:09:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-27 05:09:58,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:58,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:58,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:09:58,177 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1479300224, now seen corresponding path program 1 times [2020-10-27 05:09:58,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:58,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213467964] [2020-10-27 05:09:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:03,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:03,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 05:10:03,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:10:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:10:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:10:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:10:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 05:10:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:04,928 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:10:04,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:04,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 05:10:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:10:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:10:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:05,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213467964] [2020-10-27 05:10:05,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:05,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:10:05,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813457086] [2020-10-27 05:10:05,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:10:05,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:10:05,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:10:05,231 INFO L87 Difference]: Start difference. First operand 7461 states and 12680 transitions. Second operand 8 states. [2020-10-27 05:10:06,570 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 05:10:37,421 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 432 [2020-10-27 05:10:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:41,410 INFO L93 Difference]: Finished difference Result 16275 states and 27576 transitions. [2020-10-27 05:10:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:10:41,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-27 05:10:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:41,456 INFO L225 Difference]: With dead ends: 16275 [2020-10-27 05:10:41,456 INFO L226 Difference]: Without dead ends: 10047 [2020-10-27 05:10:41,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:10:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10047 states. [2020-10-27 05:10:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10047 to 7461. [2020-10-27 05:10:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7461 states. [2020-10-27 05:10:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 12543 transitions. [2020-10-27 05:10:41,955 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 12543 transitions. Word has length 355 [2020-10-27 05:10:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:41,956 INFO L481 AbstractCegarLoop]: Abstraction has 7461 states and 12543 transitions. [2020-10-27 05:10:41,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:10:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 12543 transitions. [2020-10-27 05:10:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-27 05:10:41,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:41,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:10:41,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:10:41,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash 468695286, now seen corresponding path program 1 times [2020-10-27 05:10:41,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:41,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012415663] [2020-10-27 05:10:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:47,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 05:10:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:48,553 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:10:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:48,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:10:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:48,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012415663] [2020-10-27 05:10:48,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:48,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:10:48,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750104490] [2020-10-27 05:10:48,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:10:48,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:48,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:10:48,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:10:48,902 INFO L87 Difference]: Start difference. First operand 7461 states and 12543 transitions. Second operand 5 states. [2020-10-27 05:11:10,777 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 05:11:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:11:12,886 INFO L93 Difference]: Finished difference Result 22066 states and 37096 transitions. [2020-10-27 05:11:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:11:12,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-27 05:11:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:12,919 INFO L225 Difference]: With dead ends: 22066 [2020-10-27 05:11:12,919 INFO L226 Difference]: Without dead ends: 14706 [2020-10-27 05:11:12,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:11:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14706 states. [2020-10-27 05:11:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14706 to 14702. [2020-10-27 05:11:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14702 states. [2020-10-27 05:11:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14702 states to 14702 states and 24662 transitions. [2020-10-27 05:11:13,953 INFO L78 Accepts]: Start accepts. Automaton has 14702 states and 24662 transitions. Word has length 355 [2020-10-27 05:11:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:11:13,954 INFO L481 AbstractCegarLoop]: Abstraction has 14702 states and 24662 transitions. [2020-10-27 05:11:13,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:11:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 14702 states and 24662 transitions. [2020-10-27 05:11:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-27 05:11:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:11:13,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:11:13,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:11:13,992 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:11:13,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:11:13,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1776314801, now seen corresponding path program 1 times [2020-10-27 05:11:13,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:11:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53641198] [2020-10-27 05:11:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:11:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:19,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 05:11:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:11:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:20,547 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 05:11:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:11:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:11:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:11:20,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53641198] [2020-10-27 05:11:20,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:11:20,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:11:20,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041001308] [2020-10-27 05:11:20,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:11:20,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:11:20,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:11:20,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:11:20,774 INFO L87 Difference]: Start difference. First operand 14702 states and 24662 transitions. Second operand 5 states. [2020-10-27 05:11:43,566 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 05:11:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:11:45,873 INFO L93 Difference]: Finished difference Result 43480 states and 72932 transitions. [2020-10-27 05:11:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:11:45,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-27 05:11:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:45,941 INFO L225 Difference]: With dead ends: 43480 [2020-10-27 05:11:45,941 INFO L226 Difference]: Without dead ends: 28938 [2020-10-27 05:11:45,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:11:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28938 states. [2020-10-27 05:11:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28938 to 28934. [2020-10-27 05:11:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28934 states. [2020-10-27 05:11:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28934 states to 28934 states and 48404 transitions. [2020-10-27 05:11:47,913 INFO L78 Accepts]: Start accepts. Automaton has 28934 states and 48404 transitions. Word has length 356 [2020-10-27 05:11:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:11:47,913 INFO L481 AbstractCegarLoop]: Abstraction has 28934 states and 48404 transitions. [2020-10-27 05:11:47,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:11:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28934 states and 48404 transitions. [2020-10-27 05:11:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-27 05:11:47,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:11:47,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:11:47,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:11:47,969 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:11:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:11:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1278569279, now seen corresponding path program 1 times [2020-10-27 05:11:47,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:11:47,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048474813] [2020-10-27 05:11:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:11:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking...