/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:46:04,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:46:04,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:46:04,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:46:04,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:46:04,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:46:04,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:46:04,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:46:04,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:46:04,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:46:04,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:46:04,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:46:04,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:46:04,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:46:04,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:46:04,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:46:04,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:46:04,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:46:04,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:46:04,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:46:04,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:46:04,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:46:04,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:46:04,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:46:04,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:46:04,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:46:04,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:46:04,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:46:04,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:46:04,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:46:04,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:46:04,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:46:04,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:46:04,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:46:04,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:46:04,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:46:04,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:46:04,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:46:04,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:46:04,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:46:04,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:46:04,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:46:04,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:46:04,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:46:04,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:46:04,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:46:04,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:46:04,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:46:04,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:46:04,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:46:04,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:46:04,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:46:04,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:46:04,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:46:04,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:46:04,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:46:04,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:46:04,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:46:04,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:46:04,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:46:04,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:46:04,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:46:04,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:46:04,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:46:04,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:46:04,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:46:04,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:46:04,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:46:04,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:46:04,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:46:04,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:46:04,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:46:04,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:46:04,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:46:04,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:46:04,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:46:04,944 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:46:04,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:46:05,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015450601/3211507d679a414aba12be617339d851/FLAGc9d94c1f1 [2020-10-27 04:46:05,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:46:05,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:46:05,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015450601/3211507d679a414aba12be617339d851/FLAGc9d94c1f1 [2020-10-27 04:46:06,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015450601/3211507d679a414aba12be617339d851 [2020-10-27 04:46:06,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:46:06,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:46:06,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:46:06,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:46:06,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:46:06,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:06,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3e1a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06, skipping insertion in model container [2020-10-27 04:46:06,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:06,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:46:06,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:46:06,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:46:06,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:46:06,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:46:06,931 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:46:06,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06 WrapperNode [2020-10-27 04:46:06,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:46:06,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:46:06,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:46:06,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:46:06,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:06,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:06,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:06,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:07,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:07,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:07,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... [2020-10-27 04:46:07,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:46:07,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:46:07,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:46:07,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:46:07,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:46:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:46:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:46:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:46:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:46:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:46:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:46:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:46:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:46:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:46:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:46:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:46:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:46:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:46:07,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:46:07,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:46:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:46:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:46:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:46:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:46:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:46:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:46:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:46:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:46:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:46:09,812 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:46:09,812 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:46:09,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:46:09 BoogieIcfgContainer [2020-10-27 04:46:09,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:46:09,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:46:09,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:46:09,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:46:09,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:46:06" (1/3) ... [2020-10-27 04:46:09,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb5b011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:46:09, skipping insertion in model container [2020-10-27 04:46:09,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:06" (2/3) ... [2020-10-27 04:46:09,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb5b011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:46:09, skipping insertion in model container [2020-10-27 04:46:09,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:46:09" (3/3) ... [2020-10-27 04:46:09,825 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:46:09,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:46:09,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:46:09,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:46:09,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:46:09,891 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:46:09,891 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:46:09,891 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:46:09,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:46:09,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:46:09,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:46:09,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:46:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-27 04:46:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:46:09,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:09,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:09,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:09,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-27 04:46:09,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:09,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347379362] [2020-10-27 04:46:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:11,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:11,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:46:11,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-27 04:46:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 04:46:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:46:12,842 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:12,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:12,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:12,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:46:12,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:46:13,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 04:46:13,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:13,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:46:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:13,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:46:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:46:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:46:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:13,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:13,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:46:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:46:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:46:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:13,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:46:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:13,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:13,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347379362] [2020-10-27 04:46:13,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:13,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:46:13,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756298392] [2020-10-27 04:46:13,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:46:13,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:13,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:46:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:46:13,756 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-27 04:46:17,019 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:17,765 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:18,632 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:19,402 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:20,227 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:21,450 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-27 04:46:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:46:21,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 04:46:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:21,485 INFO L225 Difference]: With dead ends: 1056 [2020-10-27 04:46:21,486 INFO L226 Difference]: Without dead ends: 834 [2020-10-27 04:46:21,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:46:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-27 04:46:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-27 04:46:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 04:46:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-27 04:46:21,774 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-27 04:46:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:21,775 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-27 04:46:21,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:46:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-27 04:46:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:46:21,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:21,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:21,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:46:21,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:21,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-27 04:46:21,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:21,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716793371] [2020-10-27 04:46:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:46:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3025 [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:46:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:26,262 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:46:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-27 04:46:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:46:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:46:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:46:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:46:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:46:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:46:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:27,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:46:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:27,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:46:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:27,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716793371] [2020-10-27 04:46:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:46:27,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916018919] [2020-10-27 04:46:27,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:46:27,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:27,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:46:27,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:46:27,719 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-27 04:46:37,493 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:46:38,637 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:46:39,942 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:41,039 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:42,547 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:43,415 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:44,499 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:45,466 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:46,491 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:48,169 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-27 04:46:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:46:48,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:46:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:48,177 INFO L225 Difference]: With dead ends: 1057 [2020-10-27 04:46:48,177 INFO L226 Difference]: Without dead ends: 845 [2020-10-27 04:46:48,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:46:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-27 04:46:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-27 04:46:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 04:46:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-27 04:46:48,327 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-27 04:46:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:48,328 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-27 04:46:48,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:46:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-27 04:46:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 04:46:48,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:48,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:48,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:46:48,333 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:48,334 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-27 04:46:48,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:48,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101522261] [2020-10-27 04:46:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:53,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:53,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 04:46:53,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:46:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:46:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:46:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:46:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:54,801 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:54,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:54,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:54,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:54,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 04:46:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:46:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:46:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:46:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:46:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:46:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:55,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:55,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:46:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:55,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:55,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:46:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 04:46:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:55,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:55,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:55,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:55,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101522261] [2020-10-27 04:46:55,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:55,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:55,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056633974] [2020-10-27 04:46:55,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:55,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:55,824 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-27 04:46:57,069 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:47:04,256 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:04,904 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:05,575 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:47:05,895 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:06,994 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:47:07,314 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:08,390 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:47:08,735 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:09,937 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:47:10,302 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:12,636 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:47:13,407 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:13,858 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:47:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:13,908 INFO L93 Difference]: Finished difference Result 1308 states and 2215 transitions. [2020-10-27 04:47:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:47:13,909 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 04:47:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:13,917 INFO L225 Difference]: With dead ends: 1308 [2020-10-27 04:47:13,917 INFO L226 Difference]: Without dead ends: 1102 [2020-10-27 04:47:13,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:47:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-27 04:47:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 963. [2020-10-27 04:47:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-27 04:47:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1636 transitions. [2020-10-27 04:47:14,092 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1636 transitions. Word has length 252 [2020-10-27 04:47:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:14,093 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1636 transitions. [2020-10-27 04:47:14,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1636 transitions. [2020-10-27 04:47:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 04:47:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:14,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:47:14,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:47:14,100 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -609344280, now seen corresponding path program 1 times [2020-10-27 04:47:14,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:14,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28898380] [2020-10-27 04:47:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 04:47:19,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:47:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-27 04:47:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-27 04:47:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:20,536 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:20,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:47:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:21,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 04:47:21,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:47:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:47:21,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:47:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:21,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:21,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:47:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:47:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:21,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:21,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:47:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:21,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 04:47:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 04:47:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 04:47:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:22,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28898380] [2020-10-27 04:47:22,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:22,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:22,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423936059] [2020-10-27 04:47:22,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:22,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:22,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:22,066 INFO L87 Difference]: Start difference. First operand 963 states and 1636 transitions. Second operand 11 states. [2020-10-27 04:47:23,211 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:24,402 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:47:25,683 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:47:29,384 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:47:47,844 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:48,468 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:48,909 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:49,687 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:50,774 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:51,207 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:51,675 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:52,985 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:53,572 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:53,970 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:55,264 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:55,841 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:56,291 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:57,559 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:58,140 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:58,605 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:01,144 INFO L93 Difference]: Finished difference Result 3832 states and 6527 transitions. [2020-10-27 04:48:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:01,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 04:48:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:01,167 INFO L225 Difference]: With dead ends: 3832 [2020-10-27 04:48:01,167 INFO L226 Difference]: Without dead ends: 2936 [2020-10-27 04:48:01,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-10-27 04:48:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2606. [2020-10-27 04:48:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2606 states. [2020-10-27 04:48:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 4423 transitions. [2020-10-27 04:48:01,787 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 4423 transitions. Word has length 256 [2020-10-27 04:48:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:48:01,788 INFO L481 AbstractCegarLoop]: Abstraction has 2606 states and 4423 transitions. [2020-10-27 04:48:01,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:48:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 4423 transitions. [2020-10-27 04:48:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:48:01,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:48:01,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:48:01,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:48:01,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:48:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:48:01,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1270929201, now seen corresponding path program 1 times [2020-10-27 04:48:01,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:48:01,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826876602] [2020-10-27 04:48:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:48:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:06,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:48:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:48:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:08,052 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:48:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:48:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:48:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:08,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:08,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:08,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:08,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 04:48:08,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:48:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:08,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:08,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:48:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:48:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:09,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:48:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:09,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:09,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:09,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:48:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:09,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:09,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:48:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:09,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:09,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:09,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:09,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:09,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:09,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:48:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:09,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826876602] [2020-10-27 04:48:09,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:09,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:09,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690399337] [2020-10-27 04:48:09,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:09,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:09,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:09,486 INFO L87 Difference]: Start difference. First operand 2606 states and 4423 transitions. Second operand 11 states. [2020-10-27 04:48:10,622 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:48:11,892 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:48:15,077 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:48:16,370 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:48:38,137 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:48:38,798 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:39,274 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:39,973 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:41,236 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:41,827 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:42,175 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:43,301 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:44,010 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:44,330 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:45,346 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:46,106 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:46,473 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:47,582 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:48,342 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:48,735 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:50,874 INFO L93 Difference]: Finished difference Result 10204 states and 17333 transitions. [2020-10-27 04:48:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:50,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:48:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:50,918 INFO L225 Difference]: With dead ends: 10204 [2020-10-27 04:48:50,919 INFO L226 Difference]: Without dead ends: 7751 [2020-10-27 04:48:50,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2020-10-27 04:48:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 7007. [2020-10-27 04:48:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7007 states. [2020-10-27 04:48:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 11846 transitions. [2020-10-27 04:48:52,197 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 11846 transitions. Word has length 257 [2020-10-27 04:48:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:48:52,198 INFO L481 AbstractCegarLoop]: Abstraction has 7007 states and 11846 transitions. [2020-10-27 04:48:52,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:48:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 11846 transitions. [2020-10-27 04:48:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:48:52,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:48:52,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:48:52,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:48:52,221 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:48:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:48:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1109434040, now seen corresponding path program 1 times [2020-10-27 04:48:52,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:48:52,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013325780] [2020-10-27 04:48:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:48:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:48:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:48:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:58,570 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:48:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:48:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:48:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:58,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:48:58,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:48:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:48:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:48:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:48:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:48:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:59,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:48:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:59,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013325780] [2020-10-27 04:48:59,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:59,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824715358] [2020-10-27 04:48:59,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:59,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:59,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:59,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:59,829 INFO L87 Difference]: Start difference. First operand 7007 states and 11846 transitions. Second operand 11 states. [2020-10-27 04:49:01,081 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:49:02,418 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:49:03,761 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:49:07,594 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:49:31,007 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:49:31,652 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:32,119 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:32,866 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:33,940 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:34,377 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:34,857 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:36,010 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:36,607 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:37,028 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:38,165 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:38,736 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:39,218 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:40,412 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:41,059 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:41,485 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:49:43,888 INFO L93 Difference]: Finished difference Result 28352 states and 48072 transitions. [2020-10-27 04:49:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:49:43,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:49:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:49:43,975 INFO L225 Difference]: With dead ends: 28352 [2020-10-27 04:49:43,975 INFO L226 Difference]: Without dead ends: 21494 [2020-10-27 04:49:43,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:49:44,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21494 states. [2020-10-27 04:49:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21494 to 19682. [2020-10-27 04:49:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19682 states. [2020-10-27 04:49:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19682 states to 19682 states and 33185 transitions. [2020-10-27 04:49:48,063 INFO L78 Accepts]: Start accepts. Automaton has 19682 states and 33185 transitions. Word has length 257 [2020-10-27 04:49:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:49:48,064 INFO L481 AbstractCegarLoop]: Abstraction has 19682 states and 33185 transitions. [2020-10-27 04:49:48,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:49:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 19682 states and 33185 transitions. [2020-10-27 04:49:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:49:48,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:49:48,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:49:48,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:49:48,119 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:49:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:49:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1075410823, now seen corresponding path program 1 times [2020-10-27 04:49:48,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:49:48,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078604120] [2020-10-27 04:49:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:49:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking...