/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_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:32:32,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:32:32,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:32:32,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:32:32,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:32:32,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:32:32,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:32:32,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:32:32,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:32:32,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:32:32,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:32:32,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:32:32,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:32:32,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:32:32,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:32:32,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:32:32,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:32:32,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:32:32,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:32:32,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:32:32,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:32:32,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:32:32,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:32:32,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:32:32,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:32:32,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:32:32,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:32:32,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:32:32,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:32:32,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:32:32,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:32:32,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:32:32,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:32:32,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:32:32,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:32:32,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:32:32,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:32:32,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:32:32,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:32:32,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:32:32,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:32:32,153 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 05:32:32,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:32:32,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:32:32,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:32:32,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:32:32,211 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:32:32,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:32:32,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:32:32,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:32:32,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:32:32,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:32:32,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:32:32,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:32:32,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:32:32,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:32:32,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:32:32,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:32:32,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:32:32,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:32:32,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:32:32,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:32:32,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:32:32,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:32:32,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:32:32,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:32:32,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:32:32,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:32:32,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:32:32,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:32:32,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:32:32,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:32:32,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:32:32,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:32:32,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:32:32,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:32:32,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:32:32,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-27 05:32:32,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f586952/6f6e730e61af4b52ba3796d94d10bf96/FLAG34a561aef [2020-10-27 05:32:33,509 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:32:33,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-27 05:32:33,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f586952/6f6e730e61af4b52ba3796d94d10bf96/FLAG34a561aef [2020-10-27 05:32:33,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f586952/6f6e730e61af4b52ba3796d94d10bf96 [2020-10-27 05:32:33,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:32:33,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:32:33,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:33,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:32:33,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:32:33,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:33" (1/1) ... [2020-10-27 05:32:33,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242af7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:33, skipping insertion in model container [2020-10-27 05:32:33,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:33" (1/1) ... [2020-10-27 05:32:33,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:32:33,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:32:34,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:34,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:32:34,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:34,592 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:32:34,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34 WrapperNode [2020-10-27 05:32:34,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:34,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:32:34,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:32:34,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:32:34,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (1/1) ... [2020-10-27 05:32:34,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:32:34,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:32:34,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:32:34,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:32:34,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (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 05:32:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:32:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:32:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:32:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:32:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:32:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:32:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:32:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:32:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:32:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:32:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:32:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:32:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:32:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:32:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:32:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:32:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-27 05:32:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:32:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:32:36,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:32:36,115 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:32:36,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:32:36 BoogieIcfgContainer [2020-10-27 05:32:36,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:32:36,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:32:36,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:32:36,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:32:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:32:33" (1/3) ... [2020-10-27 05:32:36,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cc0009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:32:36, skipping insertion in model container [2020-10-27 05:32:36,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:34" (2/3) ... [2020-10-27 05:32:36,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cc0009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:32:36, skipping insertion in model container [2020-10-27 05:32:36,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:32:36" (3/3) ... [2020-10-27 05:32:36,128 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-27 05:32:36,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:32:36,149 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:32:36,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:32:36,204 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:32:36,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:32:36,205 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:32:36,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:32:36,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:32:36,205 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:32:36,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:32:36,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:32:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states. [2020-10-27 05:32:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 05:32:36,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:36,246 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] [2020-10-27 05:32:36,247 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2052993862, now seen corresponding path program 1 times [2020-10-27 05:32:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:36,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056627867] [2020-10-27 05:32:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 05:32:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:32:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:32:41,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:32:41,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:32:42,425 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:32:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:42,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:42,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:42,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:32:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:42,553 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 05:32:42,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056627867] [2020-10-27 05:32:42,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:42,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:42,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951386473] [2020-10-27 05:32:42,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:42,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:42,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:42,580 INFO L87 Difference]: Start difference. First operand 241 states. Second operand 6 states. [2020-10-27 05:32:43,182 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:32:44,953 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:32:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:45,525 INFO L93 Difference]: Finished difference Result 537 states and 899 transitions. [2020-10-27 05:32:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:32:45,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-27 05:32:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:45,542 INFO L225 Difference]: With dead ends: 537 [2020-10-27 05:32:45,542 INFO L226 Difference]: Without dead ends: 356 [2020-10-27 05:32:45,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:32:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-27 05:32:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 353. [2020-10-27 05:32:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-27 05:32:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 504 transitions. [2020-10-27 05:32:45,631 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 504 transitions. Word has length 130 [2020-10-27 05:32:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:45,632 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 504 transitions. [2020-10-27 05:32:45,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:32:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 504 transitions. [2020-10-27 05:32:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 05:32:45,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:45,637 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] [2020-10-27 05:32:45,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:32:45,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:45,638 INFO L82 PathProgramCache]: Analyzing trace with hash -106359600, now seen corresponding path program 1 times [2020-10-27 05:32:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:45,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513635742] [2020-10-27 05:32:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:50,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:50,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 05:32:50,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:32:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:32:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:32:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:51,222 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:32:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:32:51,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:51,349 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 05:32:51,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513635742] [2020-10-27 05:32:51,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:51,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:51,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328186627] [2020-10-27 05:32:51,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:51,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:51,354 INFO L87 Difference]: Start difference. First operand 353 states and 504 transitions. Second operand 6 states. [2020-10-27 05:32:51,870 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:32:53,203 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:32:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:53,769 INFO L93 Difference]: Finished difference Result 832 states and 1252 transitions. [2020-10-27 05:32:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:32:53,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-27 05:32:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:53,778 INFO L225 Difference]: With dead ends: 832 [2020-10-27 05:32:53,778 INFO L226 Difference]: Without dead ends: 563 [2020-10-27 05:32:53,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:32:53,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-27 05:32:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2020-10-27 05:32:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-27 05:32:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 830 transitions. [2020-10-27 05:32:53,873 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 830 transitions. Word has length 131 [2020-10-27 05:32:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:53,875 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 830 transitions. [2020-10-27 05:32:53,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:32:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 830 transitions. [2020-10-27 05:32:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 05:32:53,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:53,883 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] [2020-10-27 05:32:53,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:32:53,884 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1065056663, now seen corresponding path program 1 times [2020-10-27 05:32:53,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:53,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546844661] [2020-10-27 05:32:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 05:32:58,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:32:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:32:58,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:32:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:32:59,643 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:32:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 05:32:59,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:59,793 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 05:32:59,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546844661] [2020-10-27 05:32:59,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:59,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:59,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987422996] [2020-10-27 05:32:59,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:59,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:59,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:59,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:59,797 INFO L87 Difference]: Start difference. First operand 560 states and 830 transitions. Second operand 6 states. [2020-10-27 05:33:00,283 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:33:01,596 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:33:02,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:02,260 INFO L93 Difference]: Finished difference Result 1465 states and 2248 transitions. [2020-10-27 05:33:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:02,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-27 05:33:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:02,268 INFO L225 Difference]: With dead ends: 1465 [2020-10-27 05:33:02,269 INFO L226 Difference]: Without dead ends: 985 [2020-10-27 05:33:02,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-27 05:33:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 982. [2020-10-27 05:33:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-10-27 05:33:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1493 transitions. [2020-10-27 05:33:02,360 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1493 transitions. Word has length 132 [2020-10-27 05:33:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:02,360 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1493 transitions. [2020-10-27 05:33:02,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1493 transitions. [2020-10-27 05:33:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 05:33:02,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:02,364 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] [2020-10-27 05:33:02,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:33:02,365 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:02,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1527193217, now seen corresponding path program 1 times [2020-10-27 05:33:02,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:02,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217240128] [2020-10-27 05:33:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:07,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 05:33:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:33:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:33:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 05:33:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:07,950 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:07,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:33:07,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:08,047 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 05:33:08,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217240128] [2020-10-27 05:33:08,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:08,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:08,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041304282] [2020-10-27 05:33:08,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:08,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:08,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:08,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:08,051 INFO L87 Difference]: Start difference. First operand 982 states and 1493 transitions. Second operand 6 states. [2020-10-27 05:33:08,542 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:33:09,782 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:33:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:10,426 INFO L93 Difference]: Finished difference Result 2615 states and 4057 transitions. [2020-10-27 05:33:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:10,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-27 05:33:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:10,438 INFO L225 Difference]: With dead ends: 2615 [2020-10-27 05:33:10,438 INFO L226 Difference]: Without dead ends: 1725 [2020-10-27 05:33:10,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2020-10-27 05:33:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1722. [2020-10-27 05:33:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1722 states. [2020-10-27 05:33:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2648 transitions. [2020-10-27 05:33:10,575 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2648 transitions. Word has length 133 [2020-10-27 05:33:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:10,576 INFO L481 AbstractCegarLoop]: Abstraction has 1722 states and 2648 transitions. [2020-10-27 05:33:10,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2648 transitions. [2020-10-27 05:33:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 05:33:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:10,579 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] [2020-10-27 05:33:10,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:33:10,580 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1813572582, now seen corresponding path program 1 times [2020-10-27 05:33:10,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:10,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592944148] [2020-10-27 05:33:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 05:33:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:33:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:16,187 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:16,303 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 05:33:16,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592944148] [2020-10-27 05:33:16,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:16,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:16,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866984609] [2020-10-27 05:33:16,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:16,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:16,306 INFO L87 Difference]: Start difference. First operand 1722 states and 2648 transitions. Second operand 6 states. [2020-10-27 05:33:16,767 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:33:18,034 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:33:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:18,685 INFO L93 Difference]: Finished difference Result 4723 states and 7354 transitions. [2020-10-27 05:33:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:18,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-27 05:33:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:18,704 INFO L225 Difference]: With dead ends: 4723 [2020-10-27 05:33:18,704 INFO L226 Difference]: Without dead ends: 3101 [2020-10-27 05:33:18,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2020-10-27 05:33:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3098. [2020-10-27 05:33:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3098 states. [2020-10-27 05:33:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4791 transitions. [2020-10-27 05:33:18,922 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4791 transitions. Word has length 134 [2020-10-27 05:33:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:18,922 INFO L481 AbstractCegarLoop]: Abstraction has 3098 states and 4791 transitions. [2020-10-27 05:33:18,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4791 transitions. [2020-10-27 05:33:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 05:33:18,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:18,926 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] [2020-10-27 05:33:18,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:33:18,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:18,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:18,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1692965121, now seen corresponding path program 1 times [2020-10-27 05:33:18,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:18,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967168605] [2020-10-27 05:33:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:33:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:33:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:24,656 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:24,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:24,791 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 05:33:24,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967168605] [2020-10-27 05:33:24,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:24,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:33:24,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223371861] [2020-10-27 05:33:24,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:33:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:33:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:33:24,794 INFO L87 Difference]: Start difference. First operand 3098 states and 4791 transitions. Second operand 11 states. [2020-10-27 05:33:25,433 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:33:27,138 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:33:27,579 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:33:29,268 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:33:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:29,420 INFO L93 Difference]: Finished difference Result 10257 states and 15981 transitions. [2020-10-27 05:33:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:33:29,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 135 [2020-10-27 05:33:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:29,459 INFO L225 Difference]: With dead ends: 10257 [2020-10-27 05:33:29,460 INFO L226 Difference]: Without dead ends: 7280 [2020-10-27 05:33:29,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:33:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2020-10-27 05:33:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 3098. [2020-10-27 05:33:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3098 states. [2020-10-27 05:33:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4789 transitions. [2020-10-27 05:33:29,816 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4789 transitions. Word has length 135 [2020-10-27 05:33:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:29,817 INFO L481 AbstractCegarLoop]: Abstraction has 3098 states and 4789 transitions. [2020-10-27 05:33:29,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:33:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4789 transitions. [2020-10-27 05:33:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 05:33:29,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:29,820 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] [2020-10-27 05:33:29,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:33:29,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash -248896588, now seen corresponding path program 1 times [2020-10-27 05:33:29,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:29,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122670423] [2020-10-27 05:33:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:34,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 05:33:34,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,349 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:35,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,452 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 05:33:35,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122670423] [2020-10-27 05:33:35,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:35,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:35,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111400205] [2020-10-27 05:33:35,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:35,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:35,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:35,455 INFO L87 Difference]: Start difference. First operand 3098 states and 4789 transitions. Second operand 6 states. [2020-10-27 05:33:35,959 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:33:37,208 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:33:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:38,047 INFO L93 Difference]: Finished difference Result 8855 states and 13769 transitions. [2020-10-27 05:33:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:38,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-27 05:33:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:38,078 INFO L225 Difference]: With dead ends: 8855 [2020-10-27 05:33:38,079 INFO L226 Difference]: Without dead ends: 5853 [2020-10-27 05:33:38,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2020-10-27 05:33:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 5850. [2020-10-27 05:33:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5850 states. [2020-10-27 05:33:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 9044 transitions. [2020-10-27 05:33:38,694 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 9044 transitions. Word has length 136 [2020-10-27 05:33:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:38,695 INFO L481 AbstractCegarLoop]: Abstraction has 5850 states and 9044 transitions. [2020-10-27 05:33:38,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 9044 transitions. [2020-10-27 05:33:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 05:33:38,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:38,699 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] [2020-10-27 05:33:38,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:33:38,699 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:38,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1932746718, now seen corresponding path program 1 times [2020-10-27 05:33:38,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:38,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52915730] [2020-10-27 05:33:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:43,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:43,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:33:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:44,304 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:44,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:44,397 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 05:33:44,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52915730] [2020-10-27 05:33:44,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:44,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:44,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674447395] [2020-10-27 05:33:44,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:44,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:44,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:44,399 INFO L87 Difference]: Start difference. First operand 5850 states and 9044 transitions. Second operand 6 states. [2020-10-27 05:33:44,948 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:33:46,396 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:33:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:47,934 INFO L93 Difference]: Finished difference Result 17289 states and 26797 transitions. [2020-10-27 05:33:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:47,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-27 05:33:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:47,984 INFO L225 Difference]: With dead ends: 17289 [2020-10-27 05:33:47,984 INFO L226 Difference]: Without dead ends: 11515 [2020-10-27 05:33:47,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11515 states. [2020-10-27 05:33:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11515 to 11512. [2020-10-27 05:33:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11512 states. [2020-10-27 05:33:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11512 states to 11512 states and 17763 transitions. [2020-10-27 05:33:48,872 INFO L78 Accepts]: Start accepts. Automaton has 11512 states and 17763 transitions. Word has length 137 [2020-10-27 05:33:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:48,872 INFO L481 AbstractCegarLoop]: Abstraction has 11512 states and 17763 transitions. [2020-10-27 05:33:48,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11512 states and 17763 transitions. [2020-10-27 05:33:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 05:33:48,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:48,878 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] [2020-10-27 05:33:48,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:33:48,879 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash 900070789, now seen corresponding path program 1 times [2020-10-27 05:33:48,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:48,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049179030] [2020-10-27 05:33:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:33:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:54,419 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:54,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049179030] [2020-10-27 05:33:54,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:54,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:54,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666429617] [2020-10-27 05:33:54,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:54,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:54,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:54,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:54,496 INFO L87 Difference]: Start difference. First operand 11512 states and 17763 transitions. Second operand 6 states. [2020-10-27 05:33:54,997 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:33:56,403 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:33:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:58,125 INFO L93 Difference]: Finished difference Result 34059 states and 52591 transitions. [2020-10-27 05:33:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:58,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-27 05:33:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:58,183 INFO L225 Difference]: With dead ends: 34059 [2020-10-27 05:33:58,183 INFO L226 Difference]: Without dead ends: 22635 [2020-10-27 05:33:58,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22635 states. [2020-10-27 05:33:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22635 to 22632. [2020-10-27 05:33:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:34:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34786 transitions. [2020-10-27 05:34:00,000 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34786 transitions. Word has length 138 [2020-10-27 05:34:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:00,000 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34786 transitions. [2020-10-27 05:34:00,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:34:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34786 transitions. [2020-10-27 05:34:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:34:00,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:00,010 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] [2020-10-27 05:34:00,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:34:00,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash -694979637, now seen corresponding path program 1 times [2020-10-27 05:34:00,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:00,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524401684] [2020-10-27 05:34:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:05,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:05,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:34:05,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 05:34:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:05,979 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:06,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:34:06,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:06,116 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 05:34:06,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524401684] [2020-10-27 05:34:06,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:06,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:06,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610438973] [2020-10-27 05:34:06,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:06,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:06,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:06,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:06,119 INFO L87 Difference]: Start difference. First operand 22632 states and 34786 transitions. Second operand 11 states. [2020-10-27 05:34:06,686 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:34:08,534 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:34:09,054 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:34:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:11,905 INFO L93 Difference]: Finished difference Result 55822 states and 85734 transitions. [2020-10-27 05:34:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:34:11,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2020-10-27 05:34:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:11,994 INFO L225 Difference]: With dead ends: 55822 [2020-10-27 05:34:11,994 INFO L226 Difference]: Without dead ends: 33835 [2020-10-27 05:34:12,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:34:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33835 states. [2020-10-27 05:34:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33835 to 22632. [2020-10-27 05:34:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:34:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34754 transitions. [2020-10-27 05:34:14,147 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34754 transitions. Word has length 139 [2020-10-27 05:34:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:14,147 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34754 transitions. [2020-10-27 05:34:14,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:34:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34754 transitions. [2020-10-27 05:34:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 05:34:14,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:14,157 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] [2020-10-27 05:34:14,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:34:14,157 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1297719210, now seen corresponding path program 1 times [2020-10-27 05:34:14,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287665693] [2020-10-27 05:34:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:17,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:34:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 05:34:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:19,827 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:19,932 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 05:34:19,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287665693] [2020-10-27 05:34:19,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:19,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334437095] [2020-10-27 05:34:19,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:19,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:19,935 INFO L87 Difference]: Start difference. First operand 22632 states and 34754 transitions. Second operand 11 states. [2020-10-27 05:34:20,500 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 05:34:22,441 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:34:22,988 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:34:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:26,380 INFO L93 Difference]: Finished difference Result 55902 states and 85814 transitions. [2020-10-27 05:34:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:34:26,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-27 05:34:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:26,453 INFO L225 Difference]: With dead ends: 55902 [2020-10-27 05:34:26,453 INFO L226 Difference]: Without dead ends: 33835 [2020-10-27 05:34:26,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:34:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33835 states. [2020-10-27 05:34:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33835 to 22632. [2020-10-27 05:34:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:34:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34738 transitions. [2020-10-27 05:34:29,011 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34738 transitions. Word has length 140 [2020-10-27 05:34:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:29,011 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34738 transitions. [2020-10-27 05:34:29,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:34:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34738 transitions. [2020-10-27 05:34:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 05:34:29,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:29,023 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] [2020-10-27 05:34:29,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:34:29,023 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash 900716257, now seen corresponding path program 1 times [2020-10-27 05:34:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331393804] [2020-10-27 05:34:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:34,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:34,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:34:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:34,645 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:34,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:34,729 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 05:34:34,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331393804] [2020-10-27 05:34:34,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:34,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:34:34,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437547977] [2020-10-27 05:34:34,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:34:34,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:34:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:34:34,731 INFO L87 Difference]: Start difference. First operand 22632 states and 34738 transitions. Second operand 10 states. [2020-10-27 05:34:35,266 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 05:34:37,044 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:34:37,569 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:34:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:41,202 INFO L93 Difference]: Finished difference Result 55721 states and 85653 transitions. [2020-10-27 05:34:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 05:34:41,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-10-27 05:34:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:41,249 INFO L225 Difference]: With dead ends: 55721 [2020-10-27 05:34:41,249 INFO L226 Difference]: Without dead ends: 33579 [2020-10-27 05:34:41,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 05:34:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33579 states. [2020-10-27 05:34:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33579 to 22632. [2020-10-27 05:34:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:34:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34737 transitions. [2020-10-27 05:34:43,985 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34737 transitions. Word has length 141 [2020-10-27 05:34:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:43,985 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34737 transitions. [2020-10-27 05:34:43,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:34:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34737 transitions. [2020-10-27 05:34:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 05:34:43,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:43,990 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] [2020-10-27 05:34:43,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:34:43,990 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:43,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1914695734, now seen corresponding path program 1 times [2020-10-27 05:34:43,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:43,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966072871] [2020-10-27 05:34:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 05:34:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:49,654 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:49,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:49,742 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 05:34:49,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966072871] [2020-10-27 05:34:49,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:49,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:49,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008176874] [2020-10-27 05:34:49,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:49,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:49,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:49,744 INFO L87 Difference]: Start difference. First operand 22632 states and 34737 transitions. Second operand 11 states. [2020-10-27 05:34:50,302 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:34:52,335 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:34:52,860 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:34:58,309 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:35:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:00,671 INFO L93 Difference]: Finished difference Result 77577 states and 119263 transitions. [2020-10-27 05:35:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:35:00,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-10-27 05:35:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:00,755 INFO L225 Difference]: With dead ends: 77577 [2020-10-27 05:35:00,756 INFO L226 Difference]: Without dead ends: 55470 [2020-10-27 05:35:00,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:35:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55470 states. [2020-10-27 05:35:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55470 to 22632. [2020-10-27 05:35:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:35:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34729 transitions. [2020-10-27 05:35:04,178 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34729 transitions. Word has length 142 [2020-10-27 05:35:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:04,178 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34729 transitions. [2020-10-27 05:35:04,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:35:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34729 transitions. [2020-10-27 05:35:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 05:35:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:04,183 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] [2020-10-27 05:35:04,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:35:04,183 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash 593351051, now seen corresponding path program 1 times [2020-10-27 05:35:04,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:04,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005204698] [2020-10-27 05:35:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:09,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:09,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 05:35:09,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:35:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:35:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:35:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:35:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:09,845 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:35:09,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:35:09,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:10,010 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 05:35:10,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005204698] [2020-10-27 05:35:10,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:10,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:35:10,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949215239] [2020-10-27 05:35:10,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:35:10,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:35:10,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:35:10,013 INFO L87 Difference]: Start difference. First operand 22632 states and 34729 transitions. Second operand 11 states. [2020-10-27 05:35:10,561 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:35:12,677 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:35:13,302 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:35:20,186 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:35:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:22,393 INFO L93 Difference]: Finished difference Result 77597 states and 119283 transitions. [2020-10-27 05:35:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:35:22,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-10-27 05:35:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:22,463 INFO L225 Difference]: With dead ends: 77597 [2020-10-27 05:35:22,464 INFO L226 Difference]: Without dead ends: 55470 [2020-10-27 05:35:22,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:35:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55470 states. [2020-10-27 05:35:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55470 to 22632. [2020-10-27 05:35:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:35:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34725 transitions. [2020-10-27 05:35:25,881 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34725 transitions. Word has length 143 [2020-10-27 05:35:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:25,881 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34725 transitions. [2020-10-27 05:35:25,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:35:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34725 transitions. [2020-10-27 05:35:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 05:35:25,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:25,886 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] [2020-10-27 05:35:25,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:35:25,887 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1187096332, now seen corresponding path program 1 times [2020-10-27 05:35:25,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:25,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561457435] [2020-10-27 05:35:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 05:35:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:35:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:35:30,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:35:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 05:35:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:31,596 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:35:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:31,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:31,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:31,688 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 05:35:31,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561457435] [2020-10-27 05:35:31,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:31,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:35:31,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999215484] [2020-10-27 05:35:31,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:35:31,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:35:31,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:35:31,690 INFO L87 Difference]: Start difference. First operand 22632 states and 34725 transitions. Second operand 11 states. [2020-10-27 05:35:32,246 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:35:34,236 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:35:34,825 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:35:40,430 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:35:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:44,177 INFO L93 Difference]: Finished difference Result 77297 states and 118827 transitions. [2020-10-27 05:35:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:35:44,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-10-27 05:35:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:44,242 INFO L225 Difference]: With dead ends: 77297 [2020-10-27 05:35:44,242 INFO L226 Difference]: Without dead ends: 55470 [2020-10-27 05:35:44,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:35:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55470 states. [2020-10-27 05:35:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55470 to 22632. [2020-10-27 05:35:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22632 states. [2020-10-27 05:35:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 34661 transitions. [2020-10-27 05:35:47,873 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 34661 transitions. Word has length 144 [2020-10-27 05:35:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:47,873 INFO L481 AbstractCegarLoop]: Abstraction has 22632 states and 34661 transitions. [2020-10-27 05:35:47,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:35:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 34661 transitions. [2020-10-27 05:35:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 05:35:47,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:47,878 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] [2020-10-27 05:35:47,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:35:47,878 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1332101075, now seen corresponding path program 1 times [2020-10-27 05:35:47,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:47,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429147437] [2020-10-27 05:35:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:52,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 05:35:52,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 05:35:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:53,548 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:35:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:53,655 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 05:35:53,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429147437] [2020-10-27 05:35:53,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:53,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:35:53,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534188517] [2020-10-27 05:35:53,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:35:53,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:53,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:35:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:35:53,657 INFO L87 Difference]: Start difference. First operand 22632 states and 34661 transitions. Second operand 11 states. [2020-10-27 05:35:54,212 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-27 05:35:56,404 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:35:57,047 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:36:05,220 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 235