/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:33:19,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:33:19,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:33:19,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:33:19,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:33:19,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:33:19,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:33:19,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:33:19,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:33:19,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:33:19,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:33:19,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:33:19,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:33:19,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:33:19,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:33:19,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:33:19,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:33:19,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:33:19,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:33:19,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:33:19,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:33:19,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:33:19,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:33:19,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:33:19,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:33:19,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:33:19,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:33:19,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:33:19,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:33:19,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:33:19,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:33:19,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:33:19,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:33:19,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:33:19,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:33:19,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:33:19,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:33:19,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:33:19,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:33:19,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:33:19,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:33:19,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:33:19,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:33:19,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:33:19,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:33:19,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:33:19,543 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:33:19,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:33:19,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:33:19,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:33:19,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:33:19,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:33:19,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:33:19,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:33:19,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:33:19,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:33:19,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:33:19,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:33:19,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:33:19,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:33:19,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:33:19,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:33:19,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:33:19,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:33:19,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:33:19,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:33:19,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:33:19,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:33:19,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:33:19,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:33:19,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:33:19,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:33:20,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:33:20,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:33:20,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:33:20,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:33:20,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:33:20,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-29 14:33:20,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e89e0bce/3e956282fcc44633a72d9705e03e352e/FLAG237aea80c [2020-10-29 14:33:20,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:33:20,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-29 14:33:20,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e89e0bce/3e956282fcc44633a72d9705e03e352e/FLAG237aea80c [2020-10-29 14:33:21,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e89e0bce/3e956282fcc44633a72d9705e03e352e [2020-10-29 14:33:21,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:33:21,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:33:21,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:21,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:33:21,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:33:21,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e3d02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21, skipping insertion in model container [2020-10-29 14:33:21,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:33:21,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:33:21,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:21,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:33:21,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:21,835 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:33:21,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21 WrapperNode [2020-10-29 14:33:21,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:21,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:33:21,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:33:21,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:33:21,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... [2020-10-29 14:33:21,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:33:21,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:33:21,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:33:21,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:33:21,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:33:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:33:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:33:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:33:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:33:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-29 14:33:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-29 14:33:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-29 14:33:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-29 14:33:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:33:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:33:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:33:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:33:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:33:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:33:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:33:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:33:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:33:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-29 14:33:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-29 14:33:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:33:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:33:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:33:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:33:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:33:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:33:23,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:33:23,362 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-29 14:33:23,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:23 BoogieIcfgContainer [2020-10-29 14:33:23,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:33:23,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:33:23,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:33:23,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:33:23,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:33:21" (1/3) ... [2020-10-29 14:33:23,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19982edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:23, skipping insertion in model container [2020-10-29 14:33:23,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:21" (2/3) ... [2020-10-29 14:33:23,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19982edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:23, skipping insertion in model container [2020-10-29 14:33:23,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:23" (3/3) ... [2020-10-29 14:33:23,375 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.c [2020-10-29 14:33:23,388 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:33:23,394 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:33:23,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:33:23,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:33:23,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:33:23,442 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:33:23,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:33:23,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:33:23,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:33:23,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:33:23,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:33:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-29 14:33:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 14:33:23,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:23,506 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] [2020-10-29 14:33:23,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:23,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2068796717, now seen corresponding path program 1 times [2020-10-29 14:33:23,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:23,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709460831] [2020-10-29 14:33:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:28,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:28,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 14:33:28,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:33:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:33:28,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:28,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:33:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:33:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:33:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:33:29,233 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:29,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:33:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:29,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:29,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:29,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709460831] [2020-10-29 14:33:29,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:29,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:29,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164128703] [2020-10-29 14:33:29,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:29,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:29,332 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-10-29 14:33:29,594 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:31,670 INFO L93 Difference]: Finished difference Result 929 states and 1655 transitions. [2020-10-29 14:33:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:31,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-29 14:33:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:31,691 INFO L225 Difference]: With dead ends: 929 [2020-10-29 14:33:31,691 INFO L226 Difference]: Without dead ends: 634 [2020-10-29 14:33:31,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-29 14:33:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 552. [2020-10-29 14:33:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-29 14:33:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 918 transitions. [2020-10-29 14:33:31,856 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 918 transitions. Word has length 40 [2020-10-29 14:33:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:31,858 INFO L481 AbstractCegarLoop]: Abstraction has 552 states and 918 transitions. [2020-10-29 14:33:31,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 918 transitions. [2020-10-29 14:33:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 14:33:31,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:31,874 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] [2020-10-29 14:33:31,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:33:31,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:31,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2007405997, now seen corresponding path program 1 times [2020-10-29 14:33:31,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:31,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5353269] [2020-10-29 14:33:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:35,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:33:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:33:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3588 [2020-10-29 14:33:35,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:35,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:33:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:33:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:35,838 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:33:35,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:35,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:35,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5353269] [2020-10-29 14:33:35,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:35,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:35,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646652367] [2020-10-29 14:33:35,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:35,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:35,898 INFO L87 Difference]: Start difference. First operand 552 states and 918 transitions. Second operand 4 states. [2020-10-29 14:33:36,195 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:33:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:38,661 INFO L93 Difference]: Finished difference Result 1592 states and 2606 transitions. [2020-10-29 14:33:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:38,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 14:33:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:38,676 INFO L225 Difference]: With dead ends: 1592 [2020-10-29 14:33:38,676 INFO L226 Difference]: Without dead ends: 1051 [2020-10-29 14:33:38,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-10-29 14:33:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 928. [2020-10-29 14:33:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-10-29 14:33:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1420 transitions. [2020-10-29 14:33:38,873 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1420 transitions. Word has length 41 [2020-10-29 14:33:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:38,873 INFO L481 AbstractCegarLoop]: Abstraction has 928 states and 1420 transitions. [2020-10-29 14:33:38,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1420 transitions. [2020-10-29 14:33:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 14:33:38,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:38,879 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] [2020-10-29 14:33:38,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:33:38,879 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1886802190, now seen corresponding path program 1 times [2020-10-29 14:33:38,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:38,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297904270] [2020-10-29 14:33:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 14:33:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:33:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:33:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:43,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:33:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:33:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:33:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:44,261 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:33:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:33:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:44,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297904270] [2020-10-29 14:33:44,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:44,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:33:44,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353386623] [2020-10-29 14:33:44,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:33:44,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:33:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:33:44,326 INFO L87 Difference]: Start difference. First operand 928 states and 1420 transitions. Second operand 7 states. [2020-10-29 14:33:44,583 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:33:45,506 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:33:45,828 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:33:47,851 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:48,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:48,131 INFO L93 Difference]: Finished difference Result 2741 states and 4218 transitions. [2020-10-29 14:33:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:33:48,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-29 14:33:48,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:48,147 INFO L225 Difference]: With dead ends: 2741 [2020-10-29 14:33:48,147 INFO L226 Difference]: Without dead ends: 1832 [2020-10-29 14:33:48,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:33:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-10-29 14:33:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1609. [2020-10-29 14:33:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-10-29 14:33:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2509 transitions. [2020-10-29 14:33:48,350 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2509 transitions. Word has length 51 [2020-10-29 14:33:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:48,351 INFO L481 AbstractCegarLoop]: Abstraction has 1609 states and 2509 transitions. [2020-10-29 14:33:48,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:33:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2509 transitions. [2020-10-29 14:33:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 14:33:48,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:48,356 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] [2020-10-29 14:33:48,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:33:48,356 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1681746295, now seen corresponding path program 1 times [2020-10-29 14:33:48,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:48,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819020878] [2020-10-29 14:33:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:53,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 14:33:53,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:33:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:33:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:53,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:33:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:33:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:33:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:53,694 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:53,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:53,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:33:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:53,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819020878] [2020-10-29 14:33:53,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:53,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:53,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945319121] [2020-10-29 14:33:53,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:33:53,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:33:53,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:53,754 INFO L87 Difference]: Start difference. First operand 1609 states and 2509 transitions. Second operand 5 states. [2020-10-29 14:33:54,017 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:33:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:56,543 INFO L93 Difference]: Finished difference Result 3469 states and 5396 transitions. [2020-10-29 14:33:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:33:56,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-29 14:33:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:56,562 INFO L225 Difference]: With dead ends: 3469 [2020-10-29 14:33:56,562 INFO L226 Difference]: Without dead ends: 1879 [2020-10-29 14:33:56,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:33:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-29 14:33:56,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1577. [2020-10-29 14:33:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-10-29 14:33:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2461 transitions. [2020-10-29 14:33:56,773 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2461 transitions. Word has length 52 [2020-10-29 14:33:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:56,774 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2461 transitions. [2020-10-29 14:33:56,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:33:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2461 transitions. [2020-10-29 14:33:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:33:56,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:56,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:33:56,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:33:56,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash 946243103, now seen corresponding path program 1 times [2020-10-29 14:33:56,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:56,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558999010] [2020-10-29 14:33:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:01,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:34:01,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:34:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:34:01,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:01,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 14:34:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:34:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:02,096 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:02,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:02,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:34:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:34:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:34:02,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558999010] [2020-10-29 14:34:02,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:34:02,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:34:02,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139463826] [2020-10-29 14:34:02,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:02,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:02,272 INFO L87 Difference]: Start difference. First operand 1577 states and 2461 transitions. Second operand 6 states. [2020-10-29 14:34:02,519 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:05,726 INFO L93 Difference]: Finished difference Result 5016 states and 8502 transitions. [2020-10-29 14:34:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:34:05,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-29 14:34:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:05,760 INFO L225 Difference]: With dead ends: 5016 [2020-10-29 14:34:05,760 INFO L226 Difference]: Without dead ends: 3458 [2020-10-29 14:34:05,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2020-10-29 14:34:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3069. [2020-10-29 14:34:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3069 states. [2020-10-29 14:34:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 4955 transitions. [2020-10-29 14:34:06,214 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 4955 transitions. Word has length 62 [2020-10-29 14:34:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:06,214 INFO L481 AbstractCegarLoop]: Abstraction has 3069 states and 4955 transitions. [2020-10-29 14:34:06,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 4955 transitions. [2020-10-29 14:34:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:34:06,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:06,220 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] [2020-10-29 14:34:06,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:34:06,221 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:06,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1056833987, now seen corresponding path program 1 times [2020-10-29 14:34:06,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:06,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622865777] [2020-10-29 14:34:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:34:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 14:34:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:11,606 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:11,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:34:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:11,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:11,776 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 14:34:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 14:34:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:11,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:34:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:11,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622865777] [2020-10-29 14:34:11,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:11,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:11,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26773138] [2020-10-29 14:34:11,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:11,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:11,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:11,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:11,908 INFO L87 Difference]: Start difference. First operand 3069 states and 4955 transitions. Second operand 6 states. [2020-10-29 14:34:12,280 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:15,587 INFO L93 Difference]: Finished difference Result 9549 states and 16310 transitions. [2020-10-29 14:34:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:34:15,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-29 14:34:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:15,650 INFO L225 Difference]: With dead ends: 9549 [2020-10-29 14:34:15,650 INFO L226 Difference]: Without dead ends: 6483 [2020-10-29 14:34:15,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:34:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2020-10-29 14:34:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 5858. [2020-10-29 14:34:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2020-10-29 14:34:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 9854 transitions. [2020-10-29 14:34:16,571 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 9854 transitions. Word has length 75 [2020-10-29 14:34:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:16,571 INFO L481 AbstractCegarLoop]: Abstraction has 5858 states and 9854 transitions. [2020-10-29 14:34:16,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 9854 transitions. [2020-10-29 14:34:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:34:16,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:16,578 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] [2020-10-29 14:34:16,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:34:16,579 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -324866561, now seen corresponding path program 1 times [2020-10-29 14:34:16,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:16,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313666723] [2020-10-29 14:34:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3670 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:34:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:20,558 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:34:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:20,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:34:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:20,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313666723] [2020-10-29 14:34:20,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:20,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:20,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636409904] [2020-10-29 14:34:20,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:20,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:20,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:20,760 INFO L87 Difference]: Start difference. First operand 5858 states and 9854 transitions. Second operand 6 states. [2020-10-29 14:34:21,017 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:22,534 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 14:34:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:23,796 INFO L93 Difference]: Finished difference Result 11872 states and 20768 transitions. [2020-10-29 14:34:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:23,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-29 14:34:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:23,852 INFO L225 Difference]: With dead ends: 11872 [2020-10-29 14:34:23,853 INFO L226 Difference]: Without dead ends: 6042 [2020-10-29 14:34:23,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2020-10-29 14:34:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 5858. [2020-10-29 14:34:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2020-10-29 14:34:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 9694 transitions. [2020-10-29 14:34:24,717 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 9694 transitions. Word has length 75 [2020-10-29 14:34:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:24,719 INFO L481 AbstractCegarLoop]: Abstraction has 5858 states and 9694 transitions. [2020-10-29 14:34:24,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 9694 transitions. [2020-10-29 14:34:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 14:34:24,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:24,727 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] [2020-10-29 14:34:24,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:34:24,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:24,728 INFO L82 PathProgramCache]: Analyzing trace with hash 328553715, now seen corresponding path program 1 times [2020-10-29 14:34:24,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:24,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256253881] [2020-10-29 14:34:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:25,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 14:34:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:34:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:34:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:25,541 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:25,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:34:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:25,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256253881] [2020-10-29 14:34:25,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:25,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:34:25,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472564919] [2020-10-29 14:34:25,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:34:25,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:34:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:25,734 INFO L87 Difference]: Start difference. First operand 5858 states and 9694 transitions. Second operand 7 states. [2020-10-29 14:34:26,235 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:34:27,242 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:27,902 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:30,412 INFO L93 Difference]: Finished difference Result 13064 states and 23221 transitions. [2020-10-29 14:34:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:34:30,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-29 14:34:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:30,498 INFO L225 Difference]: With dead ends: 13064 [2020-10-29 14:34:30,498 INFO L226 Difference]: Without dead ends: 9498 [2020-10-29 14:34:30,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:34:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9498 states. [2020-10-29 14:34:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9498 to 8780. [2020-10-29 14:34:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8780 states. [2020-10-29 14:34:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 15832 transitions. [2020-10-29 14:34:31,783 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 15832 transitions. Word has length 76 [2020-10-29 14:34:31,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:31,784 INFO L481 AbstractCegarLoop]: Abstraction has 8780 states and 15832 transitions. [2020-10-29 14:34:31,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:34:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 15832 transitions. [2020-10-29 14:34:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:34:31,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:31,795 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] [2020-10-29 14:34:31,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:34:31,795 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1638302614, now seen corresponding path program 1 times [2020-10-29 14:34:31,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:31,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042478562] [2020-10-29 14:34:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:32,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 14:34:32,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:34:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:32,804 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:32,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:32,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:32,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 14:34:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:33,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042478562] [2020-10-29 14:34:33,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:33,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:34:33,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253557483] [2020-10-29 14:34:33,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:34:33,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:33,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:34:33,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:34:33,041 INFO L87 Difference]: Start difference. First operand 8780 states and 15832 transitions. Second operand 10 states. [2020-10-29 14:34:33,323 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:33,830 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:34,220 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:35,795 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:36,099 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:34:36,469 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:36,655 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 14:34:37,019 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:39,104 INFO L93 Difference]: Finished difference Result 18198 states and 34502 transitions. [2020-10-29 14:34:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:34:39,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-29 14:34:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:39,169 INFO L225 Difference]: With dead ends: 18198 [2020-10-29 14:34:39,169 INFO L226 Difference]: Without dead ends: 9446 [2020-10-29 14:34:39,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-29 14:34:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9446 states. [2020-10-29 14:34:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9446 to 8474. [2020-10-29 14:34:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8474 states. [2020-10-29 14:34:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 14579 transitions. [2020-10-29 14:34:40,133 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 14579 transitions. Word has length 77 [2020-10-29 14:34:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:40,133 INFO L481 AbstractCegarLoop]: Abstraction has 8474 states and 14579 transitions. [2020-10-29 14:34:40,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:34:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 14579 transitions. [2020-10-29 14:34:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 14:34:40,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:40,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:34:40,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:34:40,145 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2096626854, now seen corresponding path program 1 times [2020-10-29 14:34:40,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:40,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211261963] [2020-10-29 14:34:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 14:34:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:34:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:34:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:34:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 14:34:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,453 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:34:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:34:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:34:45,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211261963] [2020-10-29 14:34:45,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:34:45,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 14:34:45,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469397148] [2020-10-29 14:34:45,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:34:45,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:34:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:34:45,732 INFO L87 Difference]: Start difference. First operand 8474 states and 14579 transitions. Second operand 8 states. [2020-10-29 14:34:45,987 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:48,847 INFO L93 Difference]: Finished difference Result 16973 states and 30729 transitions. [2020-10-29 14:34:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:34:48,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-29 14:34:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:48,903 INFO L225 Difference]: With dead ends: 16973 [2020-10-29 14:34:48,904 INFO L226 Difference]: Without dead ends: 8981 [2020-10-29 14:34:48,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:34:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8981 states. [2020-10-29 14:34:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8981 to 8474. [2020-10-29 14:34:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8474 states. [2020-10-29 14:34:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 14223 transitions. [2020-10-29 14:34:50,163 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 14223 transitions. Word has length 84 [2020-10-29 14:34:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:50,163 INFO L481 AbstractCegarLoop]: Abstraction has 8474 states and 14223 transitions. [2020-10-29 14:34:50,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:34:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 14223 transitions. [2020-10-29 14:34:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 14:34:50,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:50,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:34:50,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:34:50,177 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:50,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2120126790, now seen corresponding path program 1 times [2020-10-29 14:34:50,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:50,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902502464] [2020-10-29 14:34:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 14:34:55,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:34:55,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 14:34:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,476 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:34:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:34:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:34:55,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902502464] [2020-10-29 14:34:55,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:55,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:55,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233260750] [2020-10-29 14:34:55,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:55,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:55,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:55,669 INFO L87 Difference]: Start difference. First operand 8474 states and 14223 transitions. Second operand 6 states. [2020-10-29 14:34:55,938 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:56,198 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:58,295 INFO L93 Difference]: Finished difference Result 16854 states and 29845 transitions. [2020-10-29 14:34:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:34:58,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 14:34:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:58,349 INFO L225 Difference]: With dead ends: 16854 [2020-10-29 14:34:58,349 INFO L226 Difference]: Without dead ends: 8862 [2020-10-29 14:34:58,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8862 states. [2020-10-29 14:34:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8862 to 8474. [2020-10-29 14:34:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8474 states. [2020-10-29 14:34:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 13835 transitions. [2020-10-29 14:34:59,545 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 13835 transitions. Word has length 87 [2020-10-29 14:34:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:59,546 INFO L481 AbstractCegarLoop]: Abstraction has 8474 states and 13835 transitions. [2020-10-29 14:34:59,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 13835 transitions. [2020-10-29 14:34:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 14:34:59,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:59,557 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:34:59,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:34:59,557 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:59,558 INFO L82 PathProgramCache]: Analyzing trace with hash 166548667, now seen corresponding path program 1 times [2020-10-29 14:34:59,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:59,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31685119] [2020-10-29 14:34:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:04,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 14:35:04,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:35:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 14:35:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:35:04,850 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:05,022 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:35:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:35:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:05,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:35:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:35:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:35:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 14:35:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:35:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:35:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:35:05,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31685119] [2020-10-29 14:35:05,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:05,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 14:35:05,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356142099] [2020-10-29 14:35:05,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:35:05,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:05,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:35:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:35:05,320 INFO L87 Difference]: Start difference. First operand 8474 states and 13835 transitions. Second operand 9 states. [2020-10-29 14:35:05,588 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:06,009 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:07,229 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:07,630 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:07,995 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:35:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:16,356 INFO L93 Difference]: Finished difference Result 30216 states and 56223 transitions. [2020-10-29 14:35:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 14:35:16,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-29 14:35:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:16,479 INFO L225 Difference]: With dead ends: 30216 [2020-10-29 14:35:16,479 INFO L226 Difference]: Without dead ends: 21770 [2020-10-29 14:35:16,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2020-10-29 14:35:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21770 states. [2020-10-29 14:35:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21770 to 17228. [2020-10-29 14:35:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17228 states. [2020-10-29 14:35:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17228 states to 17228 states and 28763 transitions. [2020-10-29 14:35:18,837 INFO L78 Accepts]: Start accepts. Automaton has 17228 states and 28763 transitions. Word has length 108 [2020-10-29 14:35:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:18,837 INFO L481 AbstractCegarLoop]: Abstraction has 17228 states and 28763 transitions. [2020-10-29 14:35:18,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:35:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 17228 states and 28763 transitions. [2020-10-29 14:35:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 14:35:18,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:18,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:18,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:35:18,850 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1637318457, now seen corresponding path program 1 times [2020-10-29 14:35:18,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:18,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595537940] [2020-10-29 14:35:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:23,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:23,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 14:35:23,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:35:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:35:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:23,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 14:35:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:35:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:24,299 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:24,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:24,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:24,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:24,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:24,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:24,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:35:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:35:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:24,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:24,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:35:24,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 14:35:24,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:24,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:35:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:24,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595537940] [2020-10-29 14:35:24,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:24,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:35:24,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942524131] [2020-10-29 14:35:24,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:35:24,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:24,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:35:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:35:24,520 INFO L87 Difference]: Start difference. First operand 17228 states and 28763 transitions. Second operand 6 states. [2020-10-29 14:35:24,779 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:30,054 INFO L93 Difference]: Finished difference Result 38395 states and 74302 transitions. [2020-10-29 14:35:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:35:30,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 14:35:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:30,221 INFO L225 Difference]: With dead ends: 38395 [2020-10-29 14:35:30,222 INFO L226 Difference]: Without dead ends: 21629 [2020-10-29 14:35:30,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:35:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21629 states. [2020-10-29 14:35:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21629 to 19979. [2020-10-29 14:35:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19979 states. [2020-10-29 14:35:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19979 states to 19979 states and 36406 transitions. [2020-10-29 14:35:33,708 INFO L78 Accepts]: Start accepts. Automaton has 19979 states and 36406 transitions. Word has length 88 [2020-10-29 14:35:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:33,708 INFO L481 AbstractCegarLoop]: Abstraction has 19979 states and 36406 transitions. [2020-10-29 14:35:33,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:35:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 19979 states and 36406 transitions. [2020-10-29 14:35:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 14:35:33,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:33,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:33,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:35:33,719 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1478704389, now seen corresponding path program 1 times [2020-10-29 14:35:33,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:33,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017632180] [2020-10-29 14:35:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:38,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:35:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:38,998 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:39,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:39,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:39,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:35:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 14:35:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:35:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:35:39,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017632180] [2020-10-29 14:35:39,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:39,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:35:39,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534437311] [2020-10-29 14:35:39,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:35:39,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:39,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:35:39,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:35:39,182 INFO L87 Difference]: Start difference. First operand 19979 states and 36406 transitions. Second operand 6 states. [2020-10-29 14:35:39,437 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:40,018 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:35:41,969 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:45,660 INFO L93 Difference]: Finished difference Result 47870 states and 95887 transitions. [2020-10-29 14:35:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:35:45,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 14:35:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:46,141 INFO L225 Difference]: With dead ends: 47870 [2020-10-29 14:35:46,141 INFO L226 Difference]: Without dead ends: 25461 [2020-10-29 14:35:46,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:35:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25461 states. [2020-10-29 14:35:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25461 to 22364. [2020-10-29 14:35:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22364 states. [2020-10-29 14:35:49,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22364 states to 22364 states and 37424 transitions. [2020-10-29 14:35:49,471 INFO L78 Accepts]: Start accepts. Automaton has 22364 states and 37424 transitions. Word has length 92 [2020-10-29 14:35:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:49,472 INFO L481 AbstractCegarLoop]: Abstraction has 22364 states and 37424 transitions. [2020-10-29 14:35:49,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:35:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 22364 states and 37424 transitions. [2020-10-29 14:35:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 14:35:49,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:49,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:49,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:35:49,477 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 150868444, now seen corresponding path program 1 times [2020-10-29 14:35:49,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:49,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883813190] [2020-10-29 14:35:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:35:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 14:35:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:54,767 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 14:35:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:35:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:35:55,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883813190] [2020-10-29 14:35:55,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:55,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:35:55,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441210387] [2020-10-29 14:35:55,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:35:55,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:35:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:35:55,035 INFO L87 Difference]: Start difference. First operand 22364 states and 37424 transitions. Second operand 12 states. [2020-10-29 14:35:55,511 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:55,964 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:56,716 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 161 [2020-10-29 14:35:57,317 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:58,147 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2020-10-29 14:36:00,575 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-29 14:36:00,974 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:01,795 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2020-10-29 14:36:02,758 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-29 14:36:04,374 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:36:04,825 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:06,289 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:36:07,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:36:08,351 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:08,795 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:36:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:14,893 INFO L93 Difference]: Finished difference Result 87645 states and 167952 transitions. [2020-10-29 14:36:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 14:36:14,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-10-29 14:36:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:15,332 INFO L225 Difference]: With dead ends: 87645 [2020-10-29 14:36:15,333 INFO L226 Difference]: Without dead ends: 67114 [2020-10-29 14:36:15,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=527, Invalid=2553, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 14:36:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67114 states. [2020-10-29 14:36:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67114 to 61886. [2020-10-29 14:36:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61886 states. [2020-10-29 14:36:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61886 states to 61886 states and 114112 transitions. [2020-10-29 14:36:24,823 INFO L78 Accepts]: Start accepts. Automaton has 61886 states and 114112 transitions. Word has length 93 [2020-10-29 14:36:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:24,823 INFO L481 AbstractCegarLoop]: Abstraction has 61886 states and 114112 transitions. [2020-10-29 14:36:24,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:36:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 61886 states and 114112 transitions. [2020-10-29 14:36:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 14:36:24,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:24,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:36:24,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:36:24,828 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash 425026509, now seen corresponding path program 1 times [2020-10-29 14:36:24,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:24,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108052722] [2020-10-29 14:36:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 14:36:29,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:36:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4926 [2020-10-29 14:36:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:29,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:36:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:30,097 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:36:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:30,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:30,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:36:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:36:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:30,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 14:36:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:30,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:36:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:36:30,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108052722] [2020-10-29 14:36:30,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:36:30,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 14:36:30,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819224226] [2020-10-29 14:36:30,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 14:36:30,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:30,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 14:36:30,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:36:30,377 INFO L87 Difference]: Start difference. First operand 61886 states and 114112 transitions. Second operand 14 states. [2020-10-29 14:36:30,923 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-29 14:36:31,712 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-29 14:36:32,375 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-29 14:36:33,422 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2020-10-29 14:36:34,756 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-29 14:36:35,369 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 169 [2020-10-29 14:36:35,659 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-29 14:36:36,383 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:36,797 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:36:37,353 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 163 [2020-10-29 14:36:38,000 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-29 14:36:38,709 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 14:36:40,662 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:41,577 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:36:42,798 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:43,167 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:36:43,376 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 14:36:43,795 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:44,156 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:36:44,685 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 163