/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:04:32,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:04:32,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:04:32,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:04:32,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:04:32,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:04:32,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:04:32,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:04:32,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:04:32,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:04:32,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:04:32,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:04:32,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:04:32,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:04:32,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:04:32,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:04:32,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:04:32,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:04:32,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:04:32,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:04:32,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:04:32,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:04:32,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:04:32,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:04:32,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:04:32,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:04:32,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:04:32,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:04:32,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:04:32,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:04:32,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:04:32,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:04:32,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:04:32,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:04:32,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:04:32,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:04:32,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:04:32,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:04:32,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:04:32,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:04:32,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:04:32,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:04:32,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:04:32,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:04:32,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:04:32,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:04:32,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:04:32,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:04:32,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:04:32,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:04:32,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:04:32,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:04:32,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:04:32,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:04:32,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:04:32,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:04:32,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:04:32,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:04:32,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:04:32,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:04:32,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:04:32,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:04:32,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:04:32,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:04:32,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:04:32,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:04:32,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:04:32,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:04:32,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:04:32,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:04:32,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:04:32,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:04:32,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:04:32,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:04:32,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:04:32,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:04:32,737 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:04:32,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:04:32,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d961b3b0d/92c81be2da5748ef9b57430d4a98faac/FLAGfb513013e [2020-10-27 05:04:33,603 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:04:33,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:04:33,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d961b3b0d/92c81be2da5748ef9b57430d4a98faac/FLAGfb513013e [2020-10-27 05:04:33,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d961b3b0d/92c81be2da5748ef9b57430d4a98faac [2020-10-27 05:04:33,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:04:33,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:04:33,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:04:33,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:04:33,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:04:33,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:04:33" (1/1) ... [2020-10-27 05:04:33,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e40cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:33, skipping insertion in model container [2020-10-27 05:04:33,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:04:33" (1/1) ... [2020-10-27 05:04:33,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:04:33,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:04:34,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:04:34,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:04:35,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:04:35,416 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:04:35,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35 WrapperNode [2020-10-27 05:04:35,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:04:35,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:04:35,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:04:35,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:04:35,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... [2020-10-27 05:04:35,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:04:35,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:04:35,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:04:35,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:04:35,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:04:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:04:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:04:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:04:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:04:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:04:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:04:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:04:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:04:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:04:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:04:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:04:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:04:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:04:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:04:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:04:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:04:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:04:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:04:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:04:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:04:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:04:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:04:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:04:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:04:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:04:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:04:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:04:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:04:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:04:39,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:04:39,526 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:04:39,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:04:39 BoogieIcfgContainer [2020-10-27 05:04:39,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:04:39,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:04:39,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:04:39,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:04:39,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:04:33" (1/3) ... [2020-10-27 05:04:39,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f02f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:04:39, skipping insertion in model container [2020-10-27 05:04:39,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:35" (2/3) ... [2020-10-27 05:04:39,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f02f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:04:39, skipping insertion in model container [2020-10-27 05:04:39,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:04:39" (3/3) ... [2020-10-27 05:04:39,539 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:04:39,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:04:39,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:04:39,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:04:39,604 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:04:39,604 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:04:39,604 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:04:39,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:04:39,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:04:39,605 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:04:39,605 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:04:39,605 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:04:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states. [2020-10-27 05:04:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 05:04:39,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:39,683 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] [2020-10-27 05:04:39,684 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash 430482890, now seen corresponding path program 1 times [2020-10-27 05:04:39,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:39,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16937093] [2020-10-27 05:04:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 05:04:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:04:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:04:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 05:04:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:04:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:04:45,503 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2020-10-27 05:04:46,218 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:04:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:46,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:46,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:46,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:04:46,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:04:46,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16937093] [2020-10-27 05:04:46,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:46,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:46,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988396062] [2020-10-27 05:04:46,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:46,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:46,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:46,375 INFO L87 Difference]: Start difference. First operand 1130 states. Second operand 5 states. [2020-10-27 05:04:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:53,673 INFO L93 Difference]: Finished difference Result 2066 states and 3547 transitions. [2020-10-27 05:04:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:53,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 05:04:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:53,710 INFO L225 Difference]: With dead ends: 2066 [2020-10-27 05:04:53,710 INFO L226 Difference]: Without dead ends: 1122 [2020-10-27 05:04:53,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:04:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-10-27 05:04:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2020-10-27 05:04:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-10-27 05:04:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1894 transitions. [2020-10-27 05:04:53,889 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1894 transitions. Word has length 155 [2020-10-27 05:04:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:53,892 INFO L481 AbstractCegarLoop]: Abstraction has 1122 states and 1894 transitions. [2020-10-27 05:04:53,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1894 transitions. [2020-10-27 05:04:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 05:04:53,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:53,905 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] [2020-10-27 05:04:53,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:04:53,906 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:53,907 INFO L82 PathProgramCache]: Analyzing trace with hash -481164658, now seen corresponding path program 1 times [2020-10-27 05:04:53,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:53,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067609069] [2020-10-27 05:04:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:59,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 05:04:59,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:04:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:04:59,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:04:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 05:04:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:05:00,111 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:00,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:00,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:00,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:05:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:00,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067609069] [2020-10-27 05:05:00,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:00,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:05:00,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107159146] [2020-10-27 05:05:00,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:05:00,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:05:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:05:00,257 INFO L87 Difference]: Start difference. First operand 1122 states and 1894 transitions. Second operand 4 states. [2020-10-27 05:05:00,953 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-27 05:05:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:11,789 INFO L93 Difference]: Finished difference Result 2863 states and 4845 transitions. [2020-10-27 05:05:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:05:11,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-27 05:05:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:11,803 INFO L225 Difference]: With dead ends: 2863 [2020-10-27 05:05:11,803 INFO L226 Difference]: Without dead ends: 1953 [2020-10-27 05:05:11,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-27 05:05:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1943. [2020-10-27 05:05:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-27 05:05:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3244 transitions. [2020-10-27 05:05:11,909 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3244 transitions. Word has length 196 [2020-10-27 05:05:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:11,910 INFO L481 AbstractCegarLoop]: Abstraction has 1943 states and 3244 transitions. [2020-10-27 05:05:11,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:05:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3244 transitions. [2020-10-27 05:05:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-27 05:05:11,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:11,917 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] [2020-10-27 05:05:11,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:05:11,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash 46784564, now seen corresponding path program 1 times [2020-10-27 05:05:11,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:11,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594140984] [2020-10-27 05:05:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:17,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:05:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:17,877 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:17,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594140984] [2020-10-27 05:05:18,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:18,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:18,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131115666] [2020-10-27 05:05:18,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:18,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:18,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:18,035 INFO L87 Difference]: Start difference. First operand 1943 states and 3244 transitions. Second operand 5 states. [2020-10-27 05:05:25,834 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:26,900 INFO L93 Difference]: Finished difference Result 5688 states and 9499 transitions. [2020-10-27 05:05:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:26,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-27 05:05:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:26,921 INFO L225 Difference]: With dead ends: 5688 [2020-10-27 05:05:26,922 INFO L226 Difference]: Without dead ends: 3788 [2020-10-27 05:05:26,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-10-27 05:05:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3784. [2020-10-27 05:05:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-10-27 05:05:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6299 transitions. [2020-10-27 05:05:27,142 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6299 transitions. Word has length 201 [2020-10-27 05:05:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:27,143 INFO L481 AbstractCegarLoop]: Abstraction has 3784 states and 6299 transitions. [2020-10-27 05:05:27,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6299 transitions. [2020-10-27 05:05:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 05:05:27,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:27,153 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] [2020-10-27 05:05:27,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:05:27,154 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:27,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1369976797, now seen corresponding path program 1 times [2020-10-27 05:05:27,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:27,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558048858] [2020-10-27 05:05:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:32,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:32,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 05:05:32,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:05:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:05:32,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:05:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:05:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 05:05:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:05:32,992 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:33,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:33,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:33,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:05:33,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:05:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:33,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558048858] [2020-10-27 05:05:33,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:33,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:05:33,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117548550] [2020-10-27 05:05:33,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:05:33,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:33,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:05:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:05:33,171 INFO L87 Difference]: Start difference. First operand 3784 states and 6299 transitions. Second operand 8 states. [2020-10-27 05:05:33,886 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:46,055 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2020-10-27 05:05:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:48,200 INFO L93 Difference]: Finished difference Result 8472 states and 14138 transitions. [2020-10-27 05:05:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:05:48,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-27 05:05:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:48,231 INFO L225 Difference]: With dead ends: 8472 [2020-10-27 05:05:48,231 INFO L226 Difference]: Without dead ends: 5172 [2020-10-27 05:05:48,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:05:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2020-10-27 05:05:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 3784. [2020-10-27 05:05:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-10-27 05:05:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6220 transitions. [2020-10-27 05:05:48,477 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6220 transitions. Word has length 202 [2020-10-27 05:05:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:48,478 INFO L481 AbstractCegarLoop]: Abstraction has 3784 states and 6220 transitions. [2020-10-27 05:05:48,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:05:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6220 transitions. [2020-10-27 05:05:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 05:05:48,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:48,491 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] [2020-10-27 05:05:48,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:05:48,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:48,492 INFO L82 PathProgramCache]: Analyzing trace with hash 137668318, now seen corresponding path program 1 times [2020-10-27 05:05:48,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:48,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775852681] [2020-10-27 05:05:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:05:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:54,336 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:54,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:54,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775852681] [2020-10-27 05:05:54,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:54,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:54,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259855081] [2020-10-27 05:05:54,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:54,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:54,472 INFO L87 Difference]: Start difference. First operand 3784 states and 6220 transitions. Second operand 5 states. [2020-10-27 05:06:02,875 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:06:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:04,120 INFO L93 Difference]: Finished difference Result 11115 states and 18273 transitions. [2020-10-27 05:06:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:04,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-27 05:06:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:04,156 INFO L225 Difference]: With dead ends: 11115 [2020-10-27 05:06:04,156 INFO L226 Difference]: Without dead ends: 7395 [2020-10-27 05:06:04,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2020-10-27 05:06:04,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7391. [2020-10-27 05:06:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-27 05:06:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 12113 transitions. [2020-10-27 05:06:04,732 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 12113 transitions. Word has length 202 [2020-10-27 05:06:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:04,732 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 12113 transitions. [2020-10-27 05:06:04,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 12113 transitions. [2020-10-27 05:06:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 05:06:04,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:04,750 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] [2020-10-27 05:06:04,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:06:04,751 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:04,751 INFO L82 PathProgramCache]: Analyzing trace with hash -764227415, now seen corresponding path program 1 times [2020-10-27 05:06:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:04,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136870565] [2020-10-27 05:06:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:09,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:09,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 05:06:09,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:06:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:10,566 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:06:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:10,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:10,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:06:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:10,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136870565] [2020-10-27 05:06:10,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:10,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:06:10,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842035276] [2020-10-27 05:06:10,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:06:10,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:06:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:06:10,714 INFO L87 Difference]: Start difference. First operand 7391 states and 12113 transitions. Second operand 8 states. [2020-10-27 05:06:11,476 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:06:23,921 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2020-10-27 05:06:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:26,285 INFO L93 Difference]: Finished difference Result 11737 states and 19340 transitions. [2020-10-27 05:06:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:06:26,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-27 05:06:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:26,329 INFO L225 Difference]: With dead ends: 11737 [2020-10-27 05:06:26,329 INFO L226 Difference]: Without dead ends: 9971 [2020-10-27 05:06:26,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:06:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9971 states. [2020-10-27 05:06:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9971 to 7391. [2020-10-27 05:06:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-27 05:06:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 12111 transitions. [2020-10-27 05:06:26,800 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 12111 transitions. Word has length 203 [2020-10-27 05:06:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:26,800 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 12111 transitions. [2020-10-27 05:06:26,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:06:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 12111 transitions. [2020-10-27 05:06:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 05:06:26,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:26,818 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] [2020-10-27 05:06:26,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:06:26,818 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1679642573, now seen corresponding path program 1 times [2020-10-27 05:06:26,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:26,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359602397] [2020-10-27 05:06:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:06:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:32,606 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:06:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:32,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359602397] [2020-10-27 05:06:32,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:32,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:32,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926881049] [2020-10-27 05:06:32,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:32,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:32,744 INFO L87 Difference]: Start difference. First operand 7391 states and 12111 transitions. Second operand 5 states. [2020-10-27 05:06:41,612 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:06:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:42,929 INFO L93 Difference]: Finished difference Result 21799 states and 35731 transitions. [2020-10-27 05:06:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:42,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-27 05:06:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:42,959 INFO L225 Difference]: With dead ends: 21799 [2020-10-27 05:06:42,960 INFO L226 Difference]: Without dead ends: 14489 [2020-10-27 05:06:42,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14489 states. [2020-10-27 05:06:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14489 to 14485. [2020-10-27 05:06:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14485 states. [2020-10-27 05:06:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14485 states to 14485 states and 23658 transitions. [2020-10-27 05:06:44,039 INFO L78 Accepts]: Start accepts. Automaton has 14485 states and 23658 transitions. Word has length 203 [2020-10-27 05:06:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:44,039 INFO L481 AbstractCegarLoop]: Abstraction has 14485 states and 23658 transitions. [2020-10-27 05:06:44,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14485 states and 23658 transitions. [2020-10-27 05:06:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 05:06:44,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:44,064 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] [2020-10-27 05:06:44,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:06:44,064 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:44,065 INFO L82 PathProgramCache]: Analyzing trace with hash 780052102, now seen corresponding path program 1 times [2020-10-27 05:06:44,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:44,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309378868] [2020-10-27 05:06:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:06:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:06:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:49,893 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:06:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:49,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309378868] [2020-10-27 05:06:49,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:49,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:49,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089795123] [2020-10-27 05:06:49,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:49,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:49,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:49,993 INFO L87 Difference]: Start difference. First operand 14485 states and 23658 transitions. Second operand 5 states. [2020-10-27 05:06:50,743 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2020-10-27 05:07:03,987 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-27 05:07:05,411 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-27 05:07:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:07,899 INFO L93 Difference]: Finished difference Result 26961 states and 44399 transitions. [2020-10-27 05:07:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:07:07,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-27 05:07:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:07,937 INFO L225 Difference]: With dead ends: 26961 [2020-10-27 05:07:07,938 INFO L226 Difference]: Without dead ends: 20189 [2020-10-27 05:07:07,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:07:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2020-10-27 05:07:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 20141. [2020-10-27 05:07:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20141 states. [2020-10-27 05:07:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20141 states to 20141 states and 32674 transitions. [2020-10-27 05:07:09,705 INFO L78 Accepts]: Start accepts. Automaton has 20141 states and 32674 transitions. Word has length 204 [2020-10-27 05:07:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:09,706 INFO L481 AbstractCegarLoop]: Abstraction has 20141 states and 32674 transitions. [2020-10-27 05:07:09,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20141 states and 32674 transitions. [2020-10-27 05:07:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 05:07:09,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:09,731 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] [2020-10-27 05:07:09,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:07:09,731 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1728567002, now seen corresponding path program 1 times [2020-10-27 05:07:09,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:09,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753166038] [2020-10-27 05:07:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:12,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 05:07:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:07:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:07:14,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:07:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:07:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 05:07:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:15,548 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:07:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:07:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:15,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753166038] [2020-10-27 05:07:15,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:15,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:07:15,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122822791] [2020-10-27 05:07:15,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:07:15,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:07:15,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:07:15,728 INFO L87 Difference]: Start difference. First operand 20141 states and 32674 transitions. Second operand 9 states. [2020-10-27 05:07:16,455 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:07:34,185 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-27 05:07:34,957 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:07:36,587 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2020-10-27 05:07:37,391 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-27 05:07:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:40,086 INFO L93 Difference]: Finished difference Result 62239 states and 101477 transitions. [2020-10-27 05:07:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:07:40,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-10-27 05:07:40,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:40,187 INFO L225 Difference]: With dead ends: 62239 [2020-10-27 05:07:40,187 INFO L226 Difference]: Without dead ends: 52771 [2020-10-27 05:07:40,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:07:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52771 states. [2020-10-27 05:07:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52771 to 25989. [2020-10-27 05:07:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25989 states. [2020-10-27 05:07:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 42214 transitions. [2020-10-27 05:07:42,526 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 42214 transitions. Word has length 212 [2020-10-27 05:07:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:42,527 INFO L481 AbstractCegarLoop]: Abstraction has 25989 states and 42214 transitions. [2020-10-27 05:07:42,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:07:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 42214 transitions. [2020-10-27 05:07:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 05:07:42,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:42,555 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] [2020-10-27 05:07:42,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:07:42,555 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1622496917, now seen corresponding path program 1 times [2020-10-27 05:07:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:42,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577555173] [2020-10-27 05:07:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:47,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 05:07:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:07:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:07:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 05:07:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:07:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:48,313 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:07:48,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577555173] [2020-10-27 05:07:48,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:48,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:07:48,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011661910] [2020-10-27 05:07:48,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:07:48,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:07:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:07:48,390 INFO L87 Difference]: Start difference. First operand 25989 states and 42214 transitions. Second operand 4 states. [2020-10-27 05:07:49,129 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-27 05:08:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:04,854 INFO L93 Difference]: Finished difference Result 66021 states and 107028 transitions. [2020-10-27 05:08:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:08:04,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-10-27 05:08:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:04,919 INFO L225 Difference]: With dead ends: 66021 [2020-10-27 05:08:04,920 INFO L226 Difference]: Without dead ends: 42369 [2020-10-27 05:08:04,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42369 states. [2020-10-27 05:08:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42369 to 42221. [2020-10-27 05:08:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42221 states. [2020-10-27 05:08:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42221 states to 42221 states and 67990 transitions. [2020-10-27 05:08:08,776 INFO L78 Accepts]: Start accepts. Automaton has 42221 states and 67990 transitions. Word has length 212 [2020-10-27 05:08:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:08,776 INFO L481 AbstractCegarLoop]: Abstraction has 42221 states and 67990 transitions. [2020-10-27 05:08:08,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:08:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 42221 states and 67990 transitions. [2020-10-27 05:08:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:08:08,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:08,814 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] [2020-10-27 05:08:08,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:08:08,814 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash -161133889, now seen corresponding path program 1 times [2020-10-27 05:08:08,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:08,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870961335] [2020-10-27 05:08:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:08:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:14,595 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:08:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870961335] [2020-10-27 05:08:14,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:14,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:14,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837754928] [2020-10-27 05:08:14,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:14,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:14,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:14,687 INFO L87 Difference]: Start difference. First operand 42221 states and 67990 transitions. Second operand 5 states.