/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:59:22,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:59:22,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:59:22,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:59:22,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:59:22,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:59:22,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:59:22,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:59:22,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:59:22,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:59:22,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:59:22,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:59:22,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:59:22,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:59:22,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:59:22,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:59:22,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:59:22,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:59:22,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:59:22,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:59:22,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:59:22,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:59:22,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:59:22,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:59:22,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:59:22,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:59:22,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:59:22,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:59:22,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:59:22,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:59:22,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:59:22,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:59:22,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:59:22,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:59:22,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:59:22,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:59:22,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:59:22,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:59:22,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:59:22,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:59:22,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:59:22,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:59:22,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:59:22,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:59:22,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:59:22,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:59:22,460 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:59:22,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:59:22,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:59:22,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:59:22,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:59:22,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:59:22,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:59:22,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:59:22,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:59:22,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:59:22,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:59:22,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:59:22,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:59:22,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:59:22,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:59:22,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:59:22,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:59:22,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:59:22,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:59:22,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:59:22,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:59:22,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:59:22,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:59:22,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:59:22,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:59:22,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:59:22,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:59:22,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:59:22,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:59:22,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:59:22,905 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:59:22,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:59:22,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d37950ec/7b5c063981fe46afa0bc5374d832d296/FLAG5b5f07cdc [2020-10-27 23:59:24,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:59:24,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:59:24,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d37950ec/7b5c063981fe46afa0bc5374d832d296/FLAG5b5f07cdc [2020-10-27 23:59:24,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d37950ec/7b5c063981fe46afa0bc5374d832d296 [2020-10-27 23:59:24,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:59:24,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:59:24,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:59:24,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:59:24,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:59:24,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:59:24" (1/1) ... [2020-10-27 23:59:24,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4216b8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:24, skipping insertion in model container [2020-10-27 23:59:24,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:59:24" (1/1) ... [2020-10-27 23:59:24,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:59:24,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:59:26,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:59:26,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:59:28,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:59:28,148 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:59:28,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28 WrapperNode [2020-10-27 23:59:28,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:59:28,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:59:28,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:59:28,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:59:28,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... [2020-10-27 23:59:28,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:59:28,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:59:28,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:59:28,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:59:28,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:59:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:59:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:59:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:59:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:59:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:59:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:59:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:59:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:59:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:59:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:59:36,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:59:36,196 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:59:36,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:59:36 BoogieIcfgContainer [2020-10-27 23:59:36,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:59:36,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:59:36,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:59:36,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:59:36,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:59:24" (1/3) ... [2020-10-27 23:59:36,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f8bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:59:36, skipping insertion in model container [2020-10-27 23:59:36,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:28" (2/3) ... [2020-10-27 23:59:36,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f8bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:59:36, skipping insertion in model container [2020-10-27 23:59:36,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:59:36" (3/3) ... [2020-10-27 23:59:36,232 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:59:36,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:59:36,279 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:59:36,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:59:36,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:59:36,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:59:36,374 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:59:36,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:59:36,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:59:36,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:59:36,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:59:36,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:59:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states. [2020-10-27 23:59:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:59:36,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:36,539 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] [2020-10-27 23:59:36,540 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1414921661, now seen corresponding path program 1 times [2020-10-27 23:59:36,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:36,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582334788] [2020-10-27 23:59:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 23:59:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:59:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 23:59:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:59:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:59:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:59:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:59:46,245 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-27 23:59:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 23:59:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:46,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582334788] [2020-10-27 23:59:46,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:46,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:59:46,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173319466] [2020-10-27 23:59:46,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:59:46,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:46,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:59:46,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:59:46,480 INFO L87 Difference]: Start difference. First operand 2073 states. Second operand 7 states. [2020-10-27 23:59:50,595 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:00:27,938 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:00:32,543 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 781 [2020-10-28 00:00:37,639 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 776 [2020-10-28 00:00:41,706 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 777 [2020-10-28 00:00:47,347 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-28 00:00:51,285 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:00:55,423 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification that was a NOOP. DAG size: 780 [2020-10-28 00:00:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:00:55,507 INFO L93 Difference]: Finished difference Result 5830 states and 10210 transitions. [2020-10-28 00:00:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:00:55,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 00:00:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:00:55,561 INFO L225 Difference]: With dead ends: 5830 [2020-10-28 00:00:55,561 INFO L226 Difference]: Without dead ends: 4579 [2020-10-28 00:00:55,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:00:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2020-10-28 00:00:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 3283. [2020-10-28 00:00:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3283 states. [2020-10-28 00:00:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 4555 transitions. [2020-10-28 00:00:55,866 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 4555 transitions. Word has length 105 [2020-10-28 00:00:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:00:55,870 INFO L481 AbstractCegarLoop]: Abstraction has 3283 states and 4555 transitions. [2020-10-28 00:00:55,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:00:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 4555 transitions. [2020-10-28 00:00:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 00:00:55,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:00:55,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:00:55,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:00:55,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:00:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:00:55,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1257275588, now seen corresponding path program 1 times [2020-10-28 00:00:55,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:00:55,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043378834] [2020-10-28 00:00:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:00:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:00:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:01,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:01:01,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 00:01:01,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:01:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 00:01:01,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:01:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:01:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:01:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:01:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:01:05,169 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-28 00:01:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:01:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:01:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:01:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:01:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:01:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:01:05,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043378834] [2020-10-28 00:01:05,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:01:05,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:01:05,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530149893] [2020-10-28 00:01:05,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:01:05,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:01:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:01:05,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:01:05,326 INFO L87 Difference]: Start difference. First operand 3283 states and 4555 transitions. Second operand 7 states. [2020-10-28 00:01:09,416 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:01:30,484 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification that was a NOOP. DAG size: 781 [2020-10-28 00:01:35,335 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:01:39,873 WARN L193 SmtUtils]: Spent 3.82 s on a formula simplification that was a NOOP. DAG size: 776 [2020-10-28 00:01:43,723 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification that was a NOOP. DAG size: 777 [2020-10-28 00:01:49,137 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:01:53,027 WARN L193 SmtUtils]: Spent 3.82 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-28 00:01:57,268 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification that was a NOOP. DAG size: 780 [2020-10-28 00:01:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:01:57,383 INFO L93 Difference]: Finished difference Result 11717 states and 16795 transitions. [2020-10-28 00:01:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:01:57,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-28 00:01:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:01:57,434 INFO L225 Difference]: With dead ends: 11717 [2020-10-28 00:01:57,434 INFO L226 Difference]: Without dead ends: 9160 [2020-10-28 00:01:57,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:01:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9160 states. [2020-10-28 00:01:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9160 to 6660. [2020-10-28 00:01:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6660 states. [2020-10-28 00:01:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6660 states to 6660 states and 9514 transitions. [2020-10-28 00:01:57,779 INFO L78 Accepts]: Start accepts. Automaton has 6660 states and 9514 transitions. Word has length 106 [2020-10-28 00:01:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:01:57,780 INFO L481 AbstractCegarLoop]: Abstraction has 6660 states and 9514 transitions. [2020-10-28 00:01:57,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:01:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6660 states and 9514 transitions. [2020-10-28 00:01:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 00:01:57,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:01:57,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:01:57,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:01:57,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:01:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:01:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash 632732427, now seen corresponding path program 1 times [2020-10-28 00:01:57,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:01:57,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736418370] [2020-10-28 00:01:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:01:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:01:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:58,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:02:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:02:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:02:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:02:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 00:02:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:02:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:02:02,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:02:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:02:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:02:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 00:02:02,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:02:07,111 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-28 00:02:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:02:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:02:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:02:07,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:02:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:02:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:02:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 00:02:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:02:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:02:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:02:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:02:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:02:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:02:07,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736418370] [2020-10-28 00:02:07,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:02:07,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:02:07,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130398331] [2020-10-28 00:02:07,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:02:07,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:02:07,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:02:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:02:07,262 INFO L87 Difference]: Start difference. First operand 6660 states and 9514 transitions. Second operand 7 states. [2020-10-28 00:02:11,333 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:02:32,137 WARN L193 SmtUtils]: Spent 4.00 s on a formula simplification that was a NOOP. DAG size: 781 [2020-10-28 00:02:36,963 WARN L193 SmtUtils]: Spent 3.96 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:02:41,220 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification that was a NOOP. DAG size: 776 [2020-10-28 00:02:45,186 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification that was a NOOP. DAG size: 777 [2020-10-28 00:02:50,872 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-28 00:02:54,855 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-28 00:02:59,077 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification that was a NOOP. DAG size: 780 [2020-10-28 00:02:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:02:59,192 INFO L93 Difference]: Finished difference Result 14593 states and 21081 transitions. [2020-10-28 00:02:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:02:59,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 00:02:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:02:59,247 INFO L225 Difference]: With dead ends: 14593 [2020-10-28 00:02:59,248 INFO L226 Difference]: Without dead ends: 12400 [2020-10-28 00:02:59,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:02:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12400 states. [2020-10-28 00:02:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12400 to 8212. [2020-10-28 00:02:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8212 states. [2020-10-28 00:02:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8212 states to 8212 states and 11853 transitions. [2020-10-28 00:02:59,718 INFO L78 Accepts]: Start accepts. Automaton has 8212 states and 11853 transitions. Word has length 107 [2020-10-28 00:02:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:02:59,719 INFO L481 AbstractCegarLoop]: Abstraction has 8212 states and 11853 transitions. [2020-10-28 00:02:59,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:02:59,719 INFO L276 IsEmpty]: Start isEmpty. Operand 8212 states and 11853 transitions. [2020-10-28 00:02:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 00:02:59,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:02:59,741 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] [2020-10-28 00:02:59,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:02:59,741 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:02:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:02:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1620006235, now seen corresponding path program 1 times [2020-10-28 00:02:59,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:02:59,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125102637] [2020-10-28 00:02:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:02:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:02:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 00:03:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:03:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0