/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:32:47,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:32:47,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:32:47,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:32:47,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:32:47,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:32:47,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:32:47,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:32:47,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:32:47,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:32:47,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:32:47,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:32:47,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:32:47,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:32:47,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:32:47,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:32:47,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:32:47,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:32:47,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:32:47,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:32:47,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:32:47,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:32:47,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:32:47,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:32:48,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:32:48,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:32:48,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:32:48,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:32:48,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:32:48,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:32:48,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:32:48,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:32:48,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:32:48,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:32:48,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:32:48,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:32:48,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:32:48,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:32:48,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:32:48,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:32:48,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:32:48,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:32:48,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:32:48,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:32:48,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:32:48,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:32:48,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:32:48,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:32:48,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:32:48,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:32:48,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:32:48,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:32:48,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:32:48,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:32:48,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:32:48,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:32:48,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:32:48,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:32:48,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:32:48,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:32:48,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:32:48,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:32:48,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:32:48,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:32:48,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:32:48,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:32:48,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:32:48,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:32:48,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:32:48,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:32:48,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:32:48,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:32:48,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:32:48,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:32:48,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:32:48,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:32:48,638 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:32:48,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:32:48,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54d7dc894/09921f605df94324b45e9bb83d4ef293/FLAGd3424e1b2 [2020-10-27 05:32:50,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:32:50,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:32:50,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54d7dc894/09921f605df94324b45e9bb83d4ef293/FLAGd3424e1b2 [2020-10-27 05:32:50,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54d7dc894/09921f605df94324b45e9bb83d4ef293 [2020-10-27 05:32:50,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:32:50,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:32:50,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:50,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:32:50,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:32:50,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:50" (1/1) ... [2020-10-27 05:32:50,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4980f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:50, skipping insertion in model container [2020-10-27 05:32:50,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:50" (1/1) ... [2020-10-27 05:32:50,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:32:51,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:32:55,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:55,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:32:57,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:57,791 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:32:57,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57 WrapperNode [2020-10-27 05:32:57,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:57,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:32:57,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:32:57,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:32:57,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:57,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:57,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:57,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:58,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:58,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:58,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... [2020-10-27 05:32:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:32:58,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:32:58,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:32:58,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:32:58,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:32:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:32:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:32:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:32:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:32:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:32:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:32:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:32:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:32:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:32:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:32:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:32:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:33:10,544 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:33:10,544 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:33:10,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:33:10 BoogieIcfgContainer [2020-10-27 05:33:10,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:33:10,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:33:10,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:33:10,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:33:10,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:32:50" (1/3) ... [2020-10-27 05:33:10,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95ffd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:33:10, skipping insertion in model container [2020-10-27 05:33:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:57" (2/3) ... [2020-10-27 05:33:10,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95ffd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:33:10, skipping insertion in model container [2020-10-27 05:33:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:33:10" (3/3) ... [2020-10-27 05:33:10,561 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:33:10,576 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:33:10,584 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:33:10,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:33:10,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:33:10,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:33:10,651 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:33:10,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:33:10,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:33:10,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:33:10,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:33:10,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:33:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states. [2020-10-27 05:33:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:33:10,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:10,772 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] [2020-10-27 05:33:10,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1880246902, now seen corresponding path program 1 times [2020-10-27 05:33:10,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:10,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945500173] [2020-10-27 05:33:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:33:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:33:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 05:33:16,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:33:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:33:24,772 WARN L193 SmtUtils]: Spent 7.50 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-27 05:33:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:25,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945500173] [2020-10-27 05:33:25,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:25,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:25,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092408565] [2020-10-27 05:33:25,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:25,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:25,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:25,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:25,286 INFO L87 Difference]: Start difference. First operand 3863 states. Second operand 6 states. [2020-10-27 05:33:32,418 WARN L193 SmtUtils]: Spent 6.91 s on a formula simplification that was a NOOP. DAG size: 1273 [2020-10-27 05:34:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:25,610 INFO L93 Difference]: Finished difference Result 5582 states and 10144 transitions. [2020-10-27 05:34:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:34:25,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-27 05:34:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:25,675 INFO L225 Difference]: With dead ends: 5582 [2020-10-27 05:34:25,676 INFO L226 Difference]: Without dead ends: 2808 [2020-10-27 05:34:25,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:34:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-10-27 05:34:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2020-10-27 05:34:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-10-27 05:34:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3750 transitions. [2020-10-27 05:34:25,904 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3750 transitions. Word has length 121 [2020-10-27 05:34:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:25,905 INFO L481 AbstractCegarLoop]: Abstraction has 2808 states and 3750 transitions. [2020-10-27 05:34:25,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:34:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3750 transitions. [2020-10-27 05:34:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:34:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:25,916 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] [2020-10-27 05:34:25,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:34:25,917 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash -169653760, now seen corresponding path program 1 times [2020-10-27 05:34:25,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:25,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145535696] [2020-10-27 05:34:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:31,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:34:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 05:34:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:38,189 WARN L193 SmtUtils]: Spent 6.75 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-27 05:34:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 05:34:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:34:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:34:38,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145535696] [2020-10-27 05:34:38,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:38,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:34:38,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995717264] [2020-10-27 05:34:38,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:34:38,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:38,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:34:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:34:38,594 INFO L87 Difference]: Start difference. First operand 2808 states and 3750 transitions. Second operand 6 states. [2020-10-27 05:34:45,714 WARN L193 SmtUtils]: Spent 6.89 s on a formula simplification that was a NOOP. DAG size: 1273 [2020-10-27 05:35:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:17,708 INFO L93 Difference]: Finished difference Result 4515 states and 6272 transitions. [2020-10-27 05:35:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:35:17,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-27 05:35:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:17,729 INFO L225 Difference]: With dead ends: 4515 [2020-10-27 05:35:17,729 INFO L226 Difference]: Without dead ends: 2296 [2020-10-27 05:35:17,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:35:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-10-27 05:35:17,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2296. [2020-10-27 05:35:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-10-27 05:35:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3173 transitions. [2020-10-27 05:35:17,837 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3173 transitions. Word has length 122 [2020-10-27 05:35:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:17,838 INFO L481 AbstractCegarLoop]: Abstraction has 2296 states and 3173 transitions. [2020-10-27 05:35:17,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:35:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3173 transitions. [2020-10-27 05:35:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:35:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:17,846 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] [2020-10-27 05:35:17,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:35:17,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -352478792, now seen corresponding path program 1 times [2020-10-27 05:35:17,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:17,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610676448] [2020-10-27 05:35:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:22,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:35:22,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 05:35:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:30,416 WARN L193 SmtUtils]: Spent 7.11 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-27 05:35:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-27 05:35:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:35:30,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610676448] [2020-10-27 05:35:30,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:30,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:35:30,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964839169] [2020-10-27 05:35:30,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:35:30,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:30,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:35:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:35:30,903 INFO L87 Difference]: Start difference. First operand 2296 states and 3173 transitions. Second operand 6 states. [2020-10-27 05:35:37,769 WARN L193 SmtUtils]: Spent 6.66 s on a formula simplification that was a NOOP. DAG size: 1276 [2020-10-27 05:36:13,726 WARN L193 SmtUtils]: Spent 6.74 s on a formula simplification that was a NOOP. DAG size: 1274 [2020-10-27 05:36:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:36:15,404 INFO L93 Difference]: Finished difference Result 4719 states and 6665 transitions. [2020-10-27 05:36:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:36:15,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-27 05:36:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:36:15,422 INFO L225 Difference]: With dead ends: 4719 [2020-10-27 05:36:15,422 INFO L226 Difference]: Without dead ends: 2804 [2020-10-27 05:36:15,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:36:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-10-27 05:36:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2705. [2020-10-27 05:36:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2705 states. [2020-10-27 05:36:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3802 transitions. [2020-10-27 05:36:15,584 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3802 transitions. Word has length 123 [2020-10-27 05:36:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:36:15,585 INFO L481 AbstractCegarLoop]: Abstraction has 2705 states and 3802 transitions. [2020-10-27 05:36:15,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:36:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3802 transitions. [2020-10-27 05:36:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 05:36:15,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:36:15,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:36:15,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:36:15,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:36:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:36:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash -670023602, now seen corresponding path program 1 times [2020-10-27 05:36:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:36:15,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391330958] [2020-10-27 05:36:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:36:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:36:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:36:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:36:20,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:36:27,966 WARN L193 SmtUtils]: Spent 6.89 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-27 05:36:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:36:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:36:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:28,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:36:28,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:36:28,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:36:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:36:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:36:28,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391330958] [2020-10-27 05:36:28,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:36:28,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:36:28,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111202327] [2020-10-27 05:36:28,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:36:28,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:36:28,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:36:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:36:28,323 INFO L87 Difference]: Start difference. First operand 2705 states and 3802 transitions. Second operand 6 states.