/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 06:26:05,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:26:05,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:26:05,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:26:05,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:26:05,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:26:05,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:26:05,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:26:05,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:26:05,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:26:05,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:26:05,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:26:05,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:26:05,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:26:05,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:26:05,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:26:05,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:26:05,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:26:05,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:26:05,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:26:05,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:26:05,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:26:05,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:26:05,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:26:05,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:26:05,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:26:05,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:26:05,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:26:05,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:26:05,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:26:05,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:26:05,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:26:05,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:26:05,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:26:05,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:26:05,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:26:05,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:26:05,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:26:05,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:26:05,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:26:05,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:26:05,732 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 06:26:05,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:26:05,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:26:05,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:26:05,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:26:05,756 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:26:05,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:26:05,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:26:05,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:26:05,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:26:05,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:26:05,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:26:05,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:26:05,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:26:05,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:26:05,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:26:05,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:26:05,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:26:05,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:26:05,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:26:05,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:26:05,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:26:05,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:26:05,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:26:05,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:26:05,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:26:05,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:26:05,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:26:05,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:26:05,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:26:05,769 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:26:06,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:26:06,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:26:06,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:26:06,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:26:06,109 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:26:06,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 06:26:06,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa73688c/d26699ed8e644b06af3790eb84c0180f/FLAG85abcb5db [2020-08-22 06:26:06,600 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:26:06,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 06:26:06,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa73688c/d26699ed8e644b06af3790eb84c0180f/FLAG85abcb5db [2020-08-22 06:26:06,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa73688c/d26699ed8e644b06af3790eb84c0180f [2020-08-22 06:26:06,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:26:06,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:26:06,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:06,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:26:06,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:26:06,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06, skipping insertion in model container [2020-08-22 06:26:06,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:26:06,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:26:07,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:07,188 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:26:07,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:07,254 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:26:07,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07 WrapperNode [2020-08-22 06:26:07,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:07,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:26:07,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:26:07,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:26:07,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (1/1) ... [2020-08-22 06:26:07,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:26:07,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:26:07,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:26:07,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:26:07,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (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 06:26:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:26:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:26:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 06:26:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 06:26:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 06:26:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 06:26:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 06:26:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 06:26:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 06:26:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 06:26:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:26:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:26:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:26:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 06:26:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 06:26:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 06:26:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:26:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:26:07,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:26:07,899 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:26:07,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:07 BoogieIcfgContainer [2020-08-22 06:26:07,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:26:07,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:26:07,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:26:07,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:26:07,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:26:06" (1/3) ... [2020-08-22 06:26:07,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d8ee3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:07, skipping insertion in model container [2020-08-22 06:26:07,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:07" (2/3) ... [2020-08-22 06:26:07,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d8ee3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:07, skipping insertion in model container [2020-08-22 06:26:07,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:07" (3/3) ... [2020-08-22 06:26:07,916 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-22 06:26:07,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:26:07,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:26:07,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:26:07,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:26:07,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:26:07,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:26:07,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:26:07,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:26:07,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:26:07,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:26:07,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:26:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-22 06:26:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 06:26:08,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:08,006 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 06:26:08,007 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:08,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-22 06:26:08,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:08,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362922725] [2020-08-22 06:26:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:08,516 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 06:26:08,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362922725] [2020-08-22 06:26:08,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:08,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:26:08,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152671852] [2020-08-22 06:26:08,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:08,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:08,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:08,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:08,545 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-22 06:26:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:10,326 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-22 06:26:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:26:10,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 06:26:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:10,344 INFO L225 Difference]: With dead ends: 479 [2020-08-22 06:26:10,345 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 06:26:10,351 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 06:26:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 06:26:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-22 06:26:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 06:26:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-22 06:26:10,450 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-22 06:26:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:10,451 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-22 06:26:10,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-22 06:26:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 06:26:10,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:10,461 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 06:26:10,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:26:10,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-22 06:26:10,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:10,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978404931] [2020-08-22 06:26:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:10,706 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 06:26:10,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978404931] [2020-08-22 06:26:10,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:10,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:10,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580616727] [2020-08-22 06:26:10,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:10,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:10,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:10,710 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-22 06:26:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:11,696 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-22 06:26:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:26:11,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 06:26:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:11,701 INFO L225 Difference]: With dead ends: 545 [2020-08-22 06:26:11,702 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 06:26:11,704 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 06:26:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 06:26:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-22 06:26:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 06:26:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-22 06:26:11,771 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-22 06:26:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:11,771 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-22 06:26:11,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-22 06:26:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 06:26:11,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:11,781 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 06:26:11,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:26:11,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:11,782 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-22 06:26:11,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:11,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282104277] [2020-08-22 06:26:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,995 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 06:26:11,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282104277] [2020-08-22 06:26:11,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:11,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:11,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535291929] [2020-08-22 06:26:11,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:11,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:11,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:11,998 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-22 06:26:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:13,259 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-22 06:26:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:26:13,260 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 06:26:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:13,269 INFO L225 Difference]: With dead ends: 548 [2020-08-22 06:26:13,270 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 06:26:13,271 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 06:26:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 06:26:13,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-22 06:26:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 06:26:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-22 06:26:13,309 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-22 06:26:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:13,310 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-22 06:26:13,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-22 06:26:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 06:26:13,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:13,311 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 06:26:13,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:26:13,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-22 06:26:13,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:13,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538431003] [2020-08-22 06:26:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,462 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 06:26:13,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538431003] [2020-08-22 06:26:13,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:13,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:26:13,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795164074] [2020-08-22 06:26:13,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:13,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:13,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:13,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:13,464 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-22 06:26:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:15,074 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-22 06:26:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:26:15,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 06:26:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:15,081 INFO L225 Difference]: With dead ends: 848 [2020-08-22 06:26:15,081 INFO L226 Difference]: Without dead ends: 630 [2020-08-22 06:26:15,083 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 06:26:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-22 06:26:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-22 06:26:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 06:26:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-22 06:26:15,130 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-22 06:26:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:15,131 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-22 06:26:15,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-22 06:26:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 06:26:15,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:15,132 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 06:26:15,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:26:15,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-22 06:26:15,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:15,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798105400] [2020-08-22 06:26:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:26:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 06:26:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:15,325 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 06:26:15,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798105400] [2020-08-22 06:26:15,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:15,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 06:26:15,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883845989] [2020-08-22 06:26:15,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:26:15,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:15,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:26:15,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:26:15,328 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-22 06:26:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:16,662 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-22 06:26:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:26:16,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 06:26:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:16,672 INFO L225 Difference]: With dead ends: 1125 [2020-08-22 06:26:16,672 INFO L226 Difference]: Without dead ends: 686 [2020-08-22 06:26:16,674 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 06:26:16,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-22 06:26:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-22 06:26:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-22 06:26:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-22 06:26:16,728 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-22 06:26:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:16,729 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-22 06:26:16,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:26:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-22 06:26:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 06:26:16,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:16,736 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 06:26:16,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:26:16,737 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:16,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-22 06:26:16,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:16,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192409858] [2020-08-22 06:26:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:26:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 06:26:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,925 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 06:26:16,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192409858] [2020-08-22 06:26:16,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:16,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 06:26:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976614402] [2020-08-22 06:26:16,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:26:16,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:26:16,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:26:16,932 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-22 06:26:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:18,558 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-22 06:26:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 06:26:18,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 06:26:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:18,565 INFO L225 Difference]: With dead ends: 1387 [2020-08-22 06:26:18,566 INFO L226 Difference]: Without dead ends: 859 [2020-08-22 06:26:18,569 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 06:26:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-22 06:26:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-22 06:26:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-22 06:26:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-22 06:26:18,639 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-22 06:26:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:18,640 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-22 06:26:18,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:26:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-22 06:26:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 06:26:18,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:18,643 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 06:26:18,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:26:18,643 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-22 06:26:18,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:18,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162203764] [2020-08-22 06:26:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:26:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 06:26:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,842 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 06:26:18,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162203764] [2020-08-22 06:26:18,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:18,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:26:18,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465709522] [2020-08-22 06:26:18,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:26:18,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:26:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:26:18,848 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-22 06:26:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:20,395 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-22 06:26:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:26:20,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 06:26:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:20,414 INFO L225 Difference]: With dead ends: 1930 [2020-08-22 06:26:20,414 INFO L226 Difference]: Without dead ends: 1304 [2020-08-22 06:26:20,420 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 06:26:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-22 06:26:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-22 06:26:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-22 06:26:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-22 06:26:20,526 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-22 06:26:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:20,526 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-22 06:26:20,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:26:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-22 06:26:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 06:26:20,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:20,529 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 06:26:20,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:26:20,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-22 06:26:20,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:20,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16867427] [2020-08-22 06:26:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 06:26:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:26:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:26:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 06:26:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 06:26:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:20,674 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 06:26:20,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16867427] [2020-08-22 06:26:20,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:20,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:26:20,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535083450] [2020-08-22 06:26:20,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:26:20,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:26:20,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:26:20,677 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-22 06:26:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:22,174 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-22 06:26:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:26:22,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-22 06:26:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:22,186 INFO L225 Difference]: With dead ends: 3462 [2020-08-22 06:26:22,187 INFO L226 Difference]: Without dead ends: 1841 [2020-08-22 06:26:22,194 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 06:26:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-22 06:26:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-22 06:26:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-22 06:26:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-22 06:26:22,310 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-22 06:26:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:22,311 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-22 06:26:22,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:26:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-22 06:26:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 06:26:22,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:22,314 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 06:26:22,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:26:22,315 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:22,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:22,315 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-22 06:26:22,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:22,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172604784] [2020-08-22 06:26:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:26:22,346 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:26:22,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:26:22,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:26:22,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:26:22 BoogieIcfgContainer [2020-08-22 06:26:22,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:26:22,408 INFO L168 Benchmark]: Toolchain (without parser) took 15465.80 ms. Allocated memory was 144.2 MB in the beginning and 440.9 MB in the end (delta: 296.7 MB). Free memory was 100.1 MB in the beginning and 233.2 MB in the end (delta: -133.1 MB). Peak memory consumption was 163.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,410 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.06 ms. Allocated memory is still 144.2 MB. Free memory was 99.9 MB in the beginning and 86.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,411 INFO L168 Benchmark]: Boogie Preprocessor took 133.32 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 86.7 MB in the beginning and 177.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,413 INFO L168 Benchmark]: RCFGBuilder took 518.85 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 147.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,416 INFO L168 Benchmark]: TraceAbstraction took 14490.88 ms. Allocated memory was 200.3 MB in the beginning and 440.9 MB in the end (delta: 240.6 MB). Free memory was 146.6 MB in the beginning and 233.2 MB in the end (delta: -86.5 MB). Peak memory consumption was 154.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:22,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.06 ms. Allocated memory is still 144.2 MB. Free memory was 99.9 MB in the beginning and 86.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.32 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 86.7 MB in the beginning and 177.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.85 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 147.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14490.88 ms. Allocated memory was 200.3 MB in the beginning and 440.9 MB in the end (delta: 240.6 MB). Free memory was 146.6 MB in the beginning and 233.2 MB in the end (delta: -86.5 MB). Peak memory consumption was 154.1 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: 14.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7356 SolverSat, 2607 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.1s 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: 0.5s 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...