/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:34:40,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:34:40,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:34:40,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:34:40,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:34:40,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:34:40,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:34:40,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:34:40,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:34:40,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:34:40,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:34:40,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:34:40,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:34:40,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:34:40,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:34:40,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:34:40,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:34:40,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:34:40,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:34:40,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:34:40,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:34:40,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:34:40,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:34:40,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:34:40,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:34:40,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:34:40,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:34:40,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:34:40,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:34:40,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:34:40,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:34:40,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:34:40,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:34:40,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:34:40,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:34:40,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:34:40,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:34:40,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:34:40,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:34:40,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:34:40,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:34:40,094 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 [2020-08-22 01:34:40,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:34:40,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:34:40,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:34:40,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:34:40,120 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:34:40,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:34:40,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:34:40,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:34:40,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:34:40,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:34:40,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:34:40,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:34:40,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:34:40,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:34:40,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:34:40,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:34:40,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:34:40,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:34:40,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:34:40,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:34:40,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:34:40,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:34:40,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:34:40,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:34:40,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:34:40,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:34:40,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:34:40,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:34:40,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:34:40,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:34:40,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:34:40,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:34:40,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:34:40,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:34:40,462 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:34:40,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 01:34:40,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d721f7e/a14645986e9b4e82ae8e7356fef665fa/FLAG51cfcc6a1 [2020-08-22 01:34:41,061 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:34:41,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 01:34:41,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d721f7e/a14645986e9b4e82ae8e7356fef665fa/FLAG51cfcc6a1 [2020-08-22 01:34:41,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d721f7e/a14645986e9b4e82ae8e7356fef665fa [2020-08-22 01:34:41,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:34:41,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:34:41,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:34:41,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:34:41,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:34:41,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41, skipping insertion in model container [2020-08-22 01:34:41,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:34:41,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:34:41,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:34:41,692 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:34:41,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:34:41,838 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:34:41,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41 WrapperNode [2020-08-22 01:34:41,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:34:41,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:34:41,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:34:41,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:34:41,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (1/1) ... [2020-08-22 01:34:41,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:34:41,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:34:41,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:34:41,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:34:41,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (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 [2020-08-22 01:34:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:34:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 01:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 01:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 01:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 01:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 01:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 01:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 01:34:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:34:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:34:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:34:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 01:34:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 01:34:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 01:34:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:34:42,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:34:42,432 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:34:42,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:34:42 BoogieIcfgContainer [2020-08-22 01:34:42,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:34:42,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:34:42,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:34:42,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:34:42,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:34:41" (1/3) ... [2020-08-22 01:34:42,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221ed70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:34:42, skipping insertion in model container [2020-08-22 01:34:42,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:41" (2/3) ... [2020-08-22 01:34:42,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221ed70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:34:42, skipping insertion in model container [2020-08-22 01:34:42,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:34:42" (3/3) ... [2020-08-22 01:34:42,445 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-22 01:34:42,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:34:42,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:34:42,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:34:42,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:34:42,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:34:42,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:34:42,503 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:34:42,503 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:34:42,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:34:42,503 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:34:42,504 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:34:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-22 01:34:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 01:34:42,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:42,536 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] [2020-08-22 01:34:42,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:42,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-22 01:34:42,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:42,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631415730] [2020-08-22 01:34:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:43,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631415730] [2020-08-22 01:34:43,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:43,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:34:43,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123416159] [2020-08-22 01:34:43,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:43,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:43,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:43,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:43,107 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-22 01:34:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:45,032 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-22 01:34:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:34:45,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 01:34:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:45,064 INFO L225 Difference]: With dead ends: 479 [2020-08-22 01:34:45,065 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 01:34:45,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:34:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 01:34:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-22 01:34:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 01:34:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-22 01:34:45,178 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-22 01:34:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:45,179 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-22 01:34:45,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-22 01:34:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 01:34:45,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:45,183 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] [2020-08-22 01:34:45,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:34:45,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:45,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:45,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-22 01:34:45,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:45,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442887293] [2020-08-22 01:34:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:45,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442887293] [2020-08-22 01:34:45,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:45,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:45,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332629967] [2020-08-22 01:34:45,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:45,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:45,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:45,405 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-22 01:34:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:46,464 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-22 01:34:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:34:46,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 01:34:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:46,471 INFO L225 Difference]: With dead ends: 545 [2020-08-22 01:34:46,471 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 01:34:46,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:34:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 01:34:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-22 01:34:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 01:34:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-22 01:34:46,516 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-22 01:34:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:46,517 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-22 01:34:46,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-22 01:34:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 01:34:46,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:46,519 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] [2020-08-22 01:34:46,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:34:46,520 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:46,520 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-22 01:34:46,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:46,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263842239] [2020-08-22 01:34:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:46,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263842239] [2020-08-22 01:34:46,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:46,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:46,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741628028] [2020-08-22 01:34:46,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:46,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:46,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:46,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:46,721 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-22 01:34:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:47,964 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-22 01:34:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:34:47,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 01:34:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:47,977 INFO L225 Difference]: With dead ends: 548 [2020-08-22 01:34:47,977 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 01:34:47,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:34:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 01:34:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-22 01:34:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 01:34:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-22 01:34:48,041 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-22 01:34:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:48,043 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-22 01:34:48,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-22 01:34:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 01:34:48,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:48,051 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] [2020-08-22 01:34:48,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:34:48,051 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-22 01:34:48,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:48,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992396315] [2020-08-22 01:34:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:48,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992396315] [2020-08-22 01:34:48,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:48,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:34:48,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451579074] [2020-08-22 01:34:48,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:48,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:48,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:48,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:48,262 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-22 01:34:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:49,949 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-22 01:34:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:34:49,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 01:34:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:49,959 INFO L225 Difference]: With dead ends: 848 [2020-08-22 01:34:49,959 INFO L226 Difference]: Without dead ends: 630 [2020-08-22 01:34:49,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:34:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-22 01:34:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-22 01:34:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 01:34:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-22 01:34:50,032 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-22 01:34:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:50,033 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-22 01:34:50,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-22 01:34:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 01:34:50,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:50,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:50,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:34:50,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:50,040 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-22 01:34:50,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:50,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714568009] [2020-08-22 01:34:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:34:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:34:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 01:34:50,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714568009] [2020-08-22 01:34:50,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:50,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:34:50,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765574636] [2020-08-22 01:34:50,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:34:50,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:34:50,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:34:50,303 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-22 01:34:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:51,698 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-22 01:34:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:34:51,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 01:34:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:51,704 INFO L225 Difference]: With dead ends: 1125 [2020-08-22 01:34:51,704 INFO L226 Difference]: Without dead ends: 686 [2020-08-22 01:34:51,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:34:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-22 01:34:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-22 01:34:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-22 01:34:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-22 01:34:51,777 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-22 01:34:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:51,778 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-22 01:34:51,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:34:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-22 01:34:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 01:34:51,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:51,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:51,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:34:51,781 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-22 01:34:51,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:51,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086977961] [2020-08-22 01:34:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:34:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:34:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 01:34:51,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086977961] [2020-08-22 01:34:52,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:52,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:34:52,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028236470] [2020-08-22 01:34:52,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:34:52,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:34:52,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:34:52,005 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-22 01:34:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:53,673 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-22 01:34:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 01:34:53,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 01:34:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:53,680 INFO L225 Difference]: With dead ends: 1387 [2020-08-22 01:34:53,680 INFO L226 Difference]: Without dead ends: 859 [2020-08-22 01:34:53,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-22 01:34:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-22 01:34:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-22 01:34:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-22 01:34:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-22 01:34:53,750 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-22 01:34:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:53,751 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-22 01:34:53,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:34:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-22 01:34:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 01:34:53,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:53,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:53,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:34:53,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-22 01:34:53,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:53,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738643536] [2020-08-22 01:34:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:34:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:34:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 01:34:53,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738643536] [2020-08-22 01:34:53,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:34:53,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:34:53,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246136833] [2020-08-22 01:34:53,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:34:53,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:34:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:34:53,882 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-22 01:34:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:55,374 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-22 01:34:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:34:55,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 01:34:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:55,387 INFO L225 Difference]: With dead ends: 1930 [2020-08-22 01:34:55,387 INFO L226 Difference]: Without dead ends: 1304 [2020-08-22 01:34:55,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:34:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-22 01:34:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-22 01:34:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-22 01:34:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-22 01:34:55,491 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-22 01:34:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:55,492 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-22 01:34:55,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:34:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-22 01:34:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 01:34:55,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:55,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:55,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:34:55,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-22 01:34:55,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:55,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878683319] [2020-08-22 01:34:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 01:34:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:34:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:34:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:34:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 01:34:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 01:34:55,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878683319] [2020-08-22 01:34:55,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:55,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:34:55,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587730729] [2020-08-22 01:34:55,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:34:55,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:34:55,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:34:55,619 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-22 01:34:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:57,195 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-22 01:34:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:34:57,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-22 01:34:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:57,208 INFO L225 Difference]: With dead ends: 3462 [2020-08-22 01:34:57,209 INFO L226 Difference]: Without dead ends: 1841 [2020-08-22 01:34:57,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:34:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-22 01:34:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-22 01:34:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-22 01:34:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-22 01:34:57,350 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-22 01:34:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:57,350 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-22 01:34:57,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:34:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-22 01:34:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 01:34:57,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:57,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:57,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:34:57,354 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-22 01:34:57,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:57,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750032001] [2020-08-22 01:34:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:34:57,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:34:57,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:34:57,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:34:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:34:57 BoogieIcfgContainer [2020-08-22 01:34:57,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:34:57,416 INFO L168 Benchmark]: Toolchain (without parser) took 16016.64 ms. Allocated memory was 138.9 MB in the beginning and 436.2 MB in the end (delta: 297.3 MB). Free memory was 101.7 MB in the beginning and 103.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 295.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,417 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.79 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 177.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,419 INFO L168 Benchmark]: Boogie Preprocessor took 45.06 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 175.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,420 INFO L168 Benchmark]: RCFGBuilder took 552.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.0 MB in the beginning and 145.3 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,421 INFO L168 Benchmark]: TraceAbstraction took 14974.93 ms. Allocated memory was 200.8 MB in the beginning and 436.2 MB in the end (delta: 235.4 MB). Free memory was 144.7 MB in the beginning and 103.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 276.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:34:57,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 439.79 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 177.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.06 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 175.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.0 MB in the beginning and 145.3 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14974.93 ms. Allocated memory was 200.8 MB in the beginning and 436.2 MB in the end (delta: 235.4 MB). Free memory was 144.7 MB in the beginning and 103.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 276.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7376 SolverSat, 2606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1381 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 121640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...