/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:16:58,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:16:58,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:16:58,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:16:58,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:16:58,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:16:58,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:16:58,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:16:58,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:16:58,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:16:58,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:16:58,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:16:58,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:16:58,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:16:58,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:16:58,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:16:58,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:16:58,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:16:58,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:16:58,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:16:58,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:16:58,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:16:58,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:16:58,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:16:58,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:16:58,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:16:58,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:16:58,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:16:58,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:16:58,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:16:58,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:16:58,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:16:58,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:16:58,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:16:58,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:16:58,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:16:58,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:16:58,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:16:58,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:16:58,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:16:58,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:16:58,279 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 [2020-10-28 19:16:58,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:16:58,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:16:58,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:16:58,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:16:58,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:16:58,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:16:58,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:16:58,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:16:58,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:16:58,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:16:58,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:16:58,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:16:58,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:16:58,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:16:58,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:16:58,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:16:58,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:16:58,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:16:58,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:16:58,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:16:58,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:16:58,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:16:58,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:16:58,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:16:58,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:16:58,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:16:58,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:16:58,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:16:58,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:16:58,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:16:58,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:16:58,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:16:58,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:16:58,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:16:58,844 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:16:58,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:16:58,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aec947954/38d35558e7a74be4b89914ec979dcb51/FLAG55e59183b [2020-10-28 19:16:59,808 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:16:59,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:16:59,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aec947954/38d35558e7a74be4b89914ec979dcb51/FLAG55e59183b [2020-10-28 19:17:00,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aec947954/38d35558e7a74be4b89914ec979dcb51 [2020-10-28 19:17:00,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:17:00,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:17:00,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:17:00,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:17:00,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:17:00,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:17:00" (1/1) ... [2020-10-28 19:17:00,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722d9ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:00, skipping insertion in model container [2020-10-28 19:17:00,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:17:00" (1/1) ... [2020-10-28 19:17:00,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:17:00,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:17:00,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:17:00,726 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:17:00,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:17:01,008 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:17:01,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01 WrapperNode [2020-10-28 19:17:01,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:17:01,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:17:01,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:17:01,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:17:01,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (1/1) ... [2020-10-28 19:17:01,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:17:01,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:17:01,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:17:01,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:17:01,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (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 [2020-10-28 19:17:01,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:17:01,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:17:01,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:17:01,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:17:01,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:17:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:17:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:17:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:17:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:17:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:17:01,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:17:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:17:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:17:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:17:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:17:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:17:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:17:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:17:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:17:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:17:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:17:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:17:02,891 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:17:02,891 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:17:02,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:17:02 BoogieIcfgContainer [2020-10-28 19:17:02,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:17:02,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:17:02,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:17:02,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:17:02,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:17:00" (1/3) ... [2020-10-28 19:17:02,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284b71ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:17:02, skipping insertion in model container [2020-10-28 19:17:02,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:17:01" (2/3) ... [2020-10-28 19:17:02,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284b71ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:17:02, skipping insertion in model container [2020-10-28 19:17:02,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:17:02" (3/3) ... [2020-10-28 19:17:02,909 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:17:02,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:17:02,929 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:17:02,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:17:02,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:17:02,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:17:02,986 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:17:02,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:17:02,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:17:02,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:17:02,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:17:02,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:17:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states. [2020-10-28 19:17:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 19:17:03,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:03,038 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] [2020-10-28 19:17:03,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:03,045 INFO L82 PathProgramCache]: Analyzing trace with hash -249518888, now seen corresponding path program 1 times [2020-10-28 19:17:03,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:03,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842527307] [2020-10-28 19:17:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 19:17:08,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:17:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 19:17:08,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 19:17:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 19:17:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:17:09,341 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:09,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 19:17:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:09,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842527307] [2020-10-28 19:17:09,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:09,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:09,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861476009] [2020-10-28 19:17:09,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:09,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:09,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:09,495 INFO L87 Difference]: Start difference. First operand 339 states. Second operand 4 states. [2020-10-28 19:17:10,177 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 19:17:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:12,476 INFO L93 Difference]: Finished difference Result 631 states and 1086 transitions. [2020-10-28 19:17:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:12,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-28 19:17:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:12,495 INFO L225 Difference]: With dead ends: 631 [2020-10-28 19:17:12,495 INFO L226 Difference]: Without dead ends: 469 [2020-10-28 19:17:12,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-28 19:17:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2020-10-28 19:17:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-28 19:17:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 780 transitions. [2020-10-28 19:17:12,599 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 780 transitions. Word has length 111 [2020-10-28 19:17:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:12,600 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 780 transitions. [2020-10-28 19:17:12,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 780 transitions. [2020-10-28 19:17:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 19:17:12,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:12,606 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] [2020-10-28 19:17:12,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:17:12,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:12,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1409818577, now seen corresponding path program 1 times [2020-10-28 19:17:12,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:12,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940736453] [2020-10-28 19:17:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:17,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 19:17:17,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:17:17,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:17,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 19:17:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 19:17:18,590 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:18,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:18,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:18,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:17:18,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:18,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:18,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940736453] [2020-10-28 19:17:18,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:18,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:18,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719331344] [2020-10-28 19:17:18,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:18,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:18,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:18,732 INFO L87 Difference]: Start difference. First operand 466 states and 780 transitions. Second operand 5 states. [2020-10-28 19:17:22,496 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:17:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:22,649 INFO L93 Difference]: Finished difference Result 1332 states and 2229 transitions. [2020-10-28 19:17:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:22,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-28 19:17:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:22,661 INFO L225 Difference]: With dead ends: 1332 [2020-10-28 19:17:22,661 INFO L226 Difference]: Without dead ends: 901 [2020-10-28 19:17:22,665 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 [2020-10-28 19:17:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-10-28 19:17:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 898. [2020-10-28 19:17:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-28 19:17:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1500 transitions. [2020-10-28 19:17:22,755 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1500 transitions. Word has length 114 [2020-10-28 19:17:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:22,756 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1500 transitions. [2020-10-28 19:17:22,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1500 transitions. [2020-10-28 19:17:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 19:17:22,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:22,760 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] [2020-10-28 19:17:22,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:17:22,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash -852607717, now seen corresponding path program 1 times [2020-10-28 19:17:22,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:22,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458900158] [2020-10-28 19:17:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 19:17:27,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 19:17:27,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:27,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 19:17:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:28,641 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:28,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:17:28,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458900158] [2020-10-28 19:17:28,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:28,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:28,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419666208] [2020-10-28 19:17:28,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:28,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:28,755 INFO L87 Difference]: Start difference. First operand 898 states and 1500 transitions. Second operand 5 states. [2020-10-28 19:17:32,277 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:17:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:32,419 INFO L93 Difference]: Finished difference Result 2559 states and 4264 transitions. [2020-10-28 19:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:32,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-28 19:17:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:32,434 INFO L225 Difference]: With dead ends: 2559 [2020-10-28 19:17:32,434 INFO L226 Difference]: Without dead ends: 1750 [2020-10-28 19:17:32,437 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 [2020-10-28 19:17:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-10-28 19:17:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1747. [2020-10-28 19:17:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-10-28 19:17:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2900 transitions. [2020-10-28 19:17:32,591 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2900 transitions. Word has length 115 [2020-10-28 19:17:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:32,593 INFO L481 AbstractCegarLoop]: Abstraction has 1747 states and 2900 transitions. [2020-10-28 19:17:32,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2900 transitions. [2020-10-28 19:17:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 19:17:32,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:32,603 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] [2020-10-28 19:17:32,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:17:32,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1806182938, now seen corresponding path program 1 times [2020-10-28 19:17:32,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:32,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685163455] [2020-10-28 19:17:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 19:17:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:38,607 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:38,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:38,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685163455] [2020-10-28 19:17:38,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:38,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:38,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493739057] [2020-10-28 19:17:38,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:38,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:38,699 INFO L87 Difference]: Start difference. First operand 1747 states and 2900 transitions. Second operand 5 states. [2020-10-28 19:17:41,791 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:17:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:41,972 INFO L93 Difference]: Finished difference Result 5055 states and 8374 transitions. [2020-10-28 19:17:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:41,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-28 19:17:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:41,996 INFO L225 Difference]: With dead ends: 5055 [2020-10-28 19:17:41,996 INFO L226 Difference]: Without dead ends: 3379 [2020-10-28 19:17:42,001 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 [2020-10-28 19:17:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2020-10-28 19:17:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3376. [2020-10-28 19:17:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-10-28 19:17:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 5562 transitions. [2020-10-28 19:17:42,259 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 5562 transitions. Word has length 115 [2020-10-28 19:17:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:42,260 INFO L481 AbstractCegarLoop]: Abstraction has 3376 states and 5562 transitions. [2020-10-28 19:17:42,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 5562 transitions. [2020-10-28 19:17:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 19:17:42,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:42,266 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] [2020-10-28 19:17:42,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:17:42,266 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:42,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1521513918, now seen corresponding path program 1 times [2020-10-28 19:17:42,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:42,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475050328] [2020-10-28 19:17:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:48,099 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:48,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:48,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:48,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475050328] [2020-10-28 19:17:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:48,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076138157] [2020-10-28 19:17:48,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:48,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:48,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:48,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:48,208 INFO L87 Difference]: Start difference. First operand 3376 states and 5562 transitions. Second operand 5 states. [2020-10-28 19:17:51,865 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:17:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:52,123 INFO L93 Difference]: Finished difference Result 9445 states and 15494 transitions. [2020-10-28 19:17:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:52,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-28 19:17:52,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:52,160 INFO L225 Difference]: With dead ends: 9445 [2020-10-28 19:17:52,160 INFO L226 Difference]: Without dead ends: 6485 [2020-10-28 19:17:52,168 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 [2020-10-28 19:17:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2020-10-28 19:17:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6482. [2020-10-28 19:17:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6482 states. [2020-10-28 19:17:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 10604 transitions. [2020-10-28 19:17:52,769 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 10604 transitions. Word has length 116 [2020-10-28 19:17:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:52,770 INFO L481 AbstractCegarLoop]: Abstraction has 6482 states and 10604 transitions. [2020-10-28 19:17:52,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 10604 transitions. [2020-10-28 19:17:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 19:17:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:52,782 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] [2020-10-28 19:17:52,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:17:52,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1040238152, now seen corresponding path program 1 times [2020-10-28 19:17:52,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:52,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136565414] [2020-10-28 19:17:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:57,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 19:17:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:58,632 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:17:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:58,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:58,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136565414] [2020-10-28 19:17:58,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:58,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:58,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221653887] [2020-10-28 19:17:58,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:58,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:58,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:58,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:58,707 INFO L87 Difference]: Start difference. First operand 6482 states and 10604 transitions. Second operand 5 states. [2020-10-28 19:18:02,354 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:18:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:02,638 INFO L93 Difference]: Finished difference Result 18800 states and 30718 transitions. [2020-10-28 19:18:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:02,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-28 19:18:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:02,708 INFO L225 Difference]: With dead ends: 18800 [2020-10-28 19:18:02,709 INFO L226 Difference]: Without dead ends: 12565 [2020-10-28 19:18:02,726 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 [2020-10-28 19:18:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2020-10-28 19:18:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 12562. [2020-10-28 19:18:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12562 states. [2020-10-28 19:18:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12562 states to 12562 states and 20398 transitions. [2020-10-28 19:18:03,716 INFO L78 Accepts]: Start accepts. Automaton has 12562 states and 20398 transitions. Word has length 116 [2020-10-28 19:18:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:03,717 INFO L481 AbstractCegarLoop]: Abstraction has 12562 states and 20398 transitions. [2020-10-28 19:18:03,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12562 states and 20398 transitions. [2020-10-28 19:18:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 19:18:03,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:03,739 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] [2020-10-28 19:18:03,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:18:03,740 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1499424388, now seen corresponding path program 1 times [2020-10-28 19:18:03,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:03,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444358864] [2020-10-28 19:18:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 19:18:08,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4659 [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 19:18:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 19:18:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:18:09,157 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:18:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:09,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444358864] [2020-10-28 19:18:09,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:09,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:09,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386193441] [2020-10-28 19:18:09,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:09,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:09,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:09,221 INFO L87 Difference]: Start difference. First operand 12562 states and 20398 transitions. Second operand 4 states. [2020-10-28 19:18:10,014 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 19:18:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:13,092 INFO L93 Difference]: Finished difference Result 27896 states and 45970 transitions. [2020-10-28 19:18:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:13,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-28 19:18:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:13,136 INFO L225 Difference]: With dead ends: 27896 [2020-10-28 19:18:13,136 INFO L226 Difference]: Without dead ends: 19925 [2020-10-28 19:18:13,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19925 states. [2020-10-28 19:18:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19925 to 19922. [2020-10-28 19:18:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19922 states. [2020-10-28 19:18:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19922 states to 19922 states and 32590 transitions. [2020-10-28 19:18:14,487 INFO L78 Accepts]: Start accepts. Automaton has 19922 states and 32590 transitions. Word has length 117 [2020-10-28 19:18:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:14,487 INFO L481 AbstractCegarLoop]: Abstraction has 19922 states and 32590 transitions. [2020-10-28 19:18:14,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 19922 states and 32590 transitions. [2020-10-28 19:18:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 19:18:14,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:14,510 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] [2020-10-28 19:18:14,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:18:14,511 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash -135877749, now seen corresponding path program 1 times [2020-10-28 19:18:14,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:14,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078403586] [2020-10-28 19:18:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 19:18:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:18:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:20,352 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:18:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:20,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:20,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:20,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:20,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078403586] [2020-10-28 19:18:20,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:20,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:20,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526283114] [2020-10-28 19:18:20,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:20,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:20,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:20,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:20,418 INFO L87 Difference]: Start difference. First operand 19922 states and 32590 transitions. Second operand 5 states. [2020-10-28 19:18:24,730 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:18:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:26,131 INFO L93 Difference]: Finished difference Result 57756 states and 94473 transitions. [2020-10-28 19:18:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:26,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 19:18:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:26,220 INFO L225 Difference]: With dead ends: 57756 [2020-10-28 19:18:26,220 INFO L226 Difference]: Without dead ends: 38625 [2020-10-28 19:18:26,273 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 [2020-10-28 19:18:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38625 states. [2020-10-28 19:18:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38625 to 38622. [2020-10-28 19:18:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38622 states. [2020-10-28 19:18:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38622 states to 38622 states and 62907 transitions. [2020-10-28 19:18:29,540 INFO L78 Accepts]: Start accepts. Automaton has 38622 states and 62907 transitions. Word has length 121 [2020-10-28 19:18:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:29,541 INFO L481 AbstractCegarLoop]: Abstraction has 38622 states and 62907 transitions. [2020-10-28 19:18:29,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 38622 states and 62907 transitions. [2020-10-28 19:18:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 19:18:29,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:29,577 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] [2020-10-28 19:18:29,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:18:29,578 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash 155071295, now seen corresponding path program 1 times [2020-10-28 19:18:29,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:29,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956627566] [2020-10-28 19:18:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 19:18:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:35,394 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:18:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:35,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:35,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:35,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956627566] [2020-10-28 19:18:35,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:35,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:35,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677651987] [2020-10-28 19:18:35,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:35,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:35,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:35,481 INFO L87 Difference]: Start difference. First operand 38622 states and 62907 transitions. Second operand 5 states. [2020-10-28 19:18:40,599 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:18:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:43,396 INFO L93 Difference]: Finished difference Result 113295 states and 184456 transitions. [2020-10-28 19:18:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:43,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 19:18:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:43,588 INFO L225 Difference]: With dead ends: 113295 [2020-10-28 19:18:43,588 INFO L226 Difference]: Without dead ends: 75276 [2020-10-28 19:18:43,668 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 [2020-10-28 19:18:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75276 states. [2020-10-28 19:18:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75276 to 75273. [2020-10-28 19:18:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75273 states. [2020-10-28 19:18:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75273 states to 75273 states and 121800 transitions. [2020-10-28 19:18:49,564 INFO L78 Accepts]: Start accepts. Automaton has 75273 states and 121800 transitions. Word has length 121 [2020-10-28 19:18:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:49,564 INFO L481 AbstractCegarLoop]: Abstraction has 75273 states and 121800 transitions. [2020-10-28 19:18:49,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 75273 states and 121800 transitions. [2020-10-28 19:18:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 19:18:49,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:49,811 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] [2020-10-28 19:18:49,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:18:49,811 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1738028676, now seen corresponding path program 1 times [2020-10-28 19:18:49,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:49,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125073319] [2020-10-28 19:18:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 19:18:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:55,661 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:18:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:55,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125073319] [2020-10-28 19:18:55,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:55,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:55,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042964871] [2020-10-28 19:18:55,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:55,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:55,721 INFO L87 Difference]: Start difference. First operand 75273 states and 121800 transitions. Second operand 5 states. [2020-10-28 19:19:03,233 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:10,387 INFO L93 Difference]: Finished difference Result 219154 states and 354509 transitions. [2020-10-28 19:19:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:10,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-28 19:19:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:10,793 INFO L225 Difference]: With dead ends: 219154 [2020-10-28 19:19:10,794 INFO L226 Difference]: Without dead ends: 147599 [2020-10-28 19:19:10,876 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 [2020-10-28 19:19:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147599 states. [2020-10-28 19:19:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147599 to 147596. [2020-10-28 19:19:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147596 states. [2020-10-28 19:19:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147596 states to 147596 states and 237673 transitions. [2020-10-28 19:19:24,022 INFO L78 Accepts]: Start accepts. Automaton has 147596 states and 237673 transitions. Word has length 122 [2020-10-28 19:19:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:24,022 INFO L481 AbstractCegarLoop]: Abstraction has 147596 states and 237673 transitions. [2020-10-28 19:19:24,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 147596 states and 237673 transitions. [2020-10-28 19:19:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 19:19:24,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:24,113 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] [2020-10-28 19:19:24,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:19:24,113 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:24,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2100159659, now seen corresponding path program 1 times [2020-10-28 19:19:24,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:24,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875579721] [2020-10-28 19:19:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 19:19:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 19:19:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:29,933 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:29,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:19:29,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875579721] [2020-10-28 19:19:29,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:29,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:29,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791939883] [2020-10-28 19:19:29,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:29,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:29,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:29,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:29,995 INFO L87 Difference]: Start difference. First operand 147596 states and 237673 transitions. Second operand 5 states. [2020-10-28 19:19:42,839 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:59,125 INFO L93 Difference]: Finished difference Result 427263 states and 687571 transitions. [2020-10-28 19:19:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:59,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-28 19:19:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:59,910 INFO L225 Difference]: With dead ends: 427263 [2020-10-28 19:19:59,910 INFO L226 Difference]: Without dead ends: 287468 [2020-10-28 19:20:00,067 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 [2020-10-28 19:20:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287468 states. [2020-10-28 19:20:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287468 to 287465. [2020-10-28 19:20:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287465 states. [2020-10-28 19:20:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287465 states to 287465 states and 459931 transitions. [2020-10-28 19:20:28,584 INFO L78 Accepts]: Start accepts. Automaton has 287465 states and 459931 transitions. Word has length 122 [2020-10-28 19:20:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:28,585 INFO L481 AbstractCegarLoop]: Abstraction has 287465 states and 459931 transitions. [2020-10-28 19:20:28,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 287465 states and 459931 transitions. [2020-10-28 19:20:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 19:20:28,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:28,741 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] [2020-10-28 19:20:28,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:20:28,742 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:28,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:28,742 INFO L82 PathProgramCache]: Analyzing trace with hash -708143813, now seen corresponding path program 1 times [2020-10-28 19:20:28,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:28,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301379796] [2020-10-28 19:20:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:29,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 19:20:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:34,583 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:20:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:34,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:20:34,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301379796] [2020-10-28 19:20:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:34,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:34,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027066907] [2020-10-28 19:20:34,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:34,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:34,644 INFO L87 Difference]: Start difference. First operand 287465 states and 459931 transitions. Second operand 5 states.