/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b [2020-09-24 15:09:58,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:09:58,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:09:58,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:09:58,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:09:58,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:09:58,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:09:58,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:09:58,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:09:58,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:09:58,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:09:58,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:09:58,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:09:58,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:09:58,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:09:58,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:09:58,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:09:58,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:09:58,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:09:58,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:09:58,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:09:58,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:09:58,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:09:58,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:09:58,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:09:58,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:09:58,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:09:58,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:09:58,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:09:58,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:09:58,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:09:58,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:09:58,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:09:58,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:09:58,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:09:58,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:09:58,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:09:58,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:09:58,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:09:58,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:09:58,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:09:58,720 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 [2020-09-24 15:09:58,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:09:58,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:09:58,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:09:58,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:09:58,748 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:09:58,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:09:58,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:09:58,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:09:58,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:09:58,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:09:58,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:09:58,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:09:58,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:09:58,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:09:58,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:09:58,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:09:58,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:09:58,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:09:58,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:09:58,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:09:58,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:09:58,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:09:58,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:09:58,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:09:58,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:09:58,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:09:58,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:09:58,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:09:58,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:09:58,754 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:09:59,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:09:59,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:09:59,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:09:59,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:09:59,279 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:09:59,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-09-24 15:09:59,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e07f7a8f/d53498bd6c3944f984f7bb88fa1b25dc/FLAG570275f46 [2020-09-24 15:09:59,951 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:09:59,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-09-24 15:09:59,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e07f7a8f/d53498bd6c3944f984f7bb88fa1b25dc/FLAG570275f46 [2020-09-24 15:10:00,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e07f7a8f/d53498bd6c3944f984f7bb88fa1b25dc [2020-09-24 15:10:00,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:10:00,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:10:00,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:00,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:10:00,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:10:00,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00, skipping insertion in model container [2020-09-24 15:10:00,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:10:00,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:10:00,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:00,611 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:10:00,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:00,699 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:10:00,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00 WrapperNode [2020-09-24 15:10:00,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:00,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:10:00,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:10:00,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:10:00,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (1/1) ... [2020-09-24 15:10:00,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:10:00,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:10:00,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:10:00,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:10:00,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (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 [2020-09-24 15:10:00,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:10:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:10:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-24 15:10:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-09-24 15:10:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-09-24 15:10:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-09-24 15:10:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-09-24 15:10:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-24 15:10:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-24 15:10:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-24 15:10:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-24 15:10:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-24 15:10:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-24 15:10:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-24 15:10:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-09-24 15:10:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-09-24 15:10:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-09-24 15:10:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-24 15:10:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-24 15:10:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-24 15:10:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:10:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:10:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:10:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-24 15:10:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-24 15:10:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-09-24 15:10:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-24 15:10:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-24 15:10:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-24 15:10:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:10:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:10:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:10:01,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:10:01,422 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:10:01,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:01 BoogieIcfgContainer [2020-09-24 15:10:01,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:10:01,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:10:01,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:10:01,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:10:01,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:00" (1/3) ... [2020-09-24 15:10:01,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640a1eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:01, skipping insertion in model container [2020-09-24 15:10:01,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:00" (2/3) ... [2020-09-24 15:10:01,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640a1eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:01, skipping insertion in model container [2020-09-24 15:10:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:01" (3/3) ... [2020-09-24 15:10:01,448 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-09-24 15:10:01,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:10:01,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:10:01,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:10:01,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:10:01,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:10:01,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:10:01,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:10:01,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:10:01,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:10:01,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:10:01,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:10:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-09-24 15:10:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 15:10:01,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:01,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:01,598 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash 486796623, now seen corresponding path program 1 times [2020-09-24 15:10:01,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:01,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055231696] [2020-09-24 15:10:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:10:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 15:10:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:10:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:10:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:10:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 15:10:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:10:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:02,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055231696] [2020-09-24 15:10:02,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:02,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:10:02,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783367261] [2020-09-24 15:10:02,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:10:02,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:02,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:10:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:10:02,241 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 7 states. [2020-09-24 15:10:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:04,407 INFO L93 Difference]: Finished difference Result 708 states and 984 transitions. [2020-09-24 15:10:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:10:04,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-09-24 15:10:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:04,435 INFO L225 Difference]: With dead ends: 708 [2020-09-24 15:10:04,435 INFO L226 Difference]: Without dead ends: 516 [2020-09-24 15:10:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:10:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-09-24 15:10:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 347. [2020-09-24 15:10:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-09-24 15:10:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 433 transitions. [2020-09-24 15:10:04,568 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 433 transitions. Word has length 102 [2020-09-24 15:10:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:04,569 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 433 transitions. [2020-09-24 15:10:04,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:10:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 433 transitions. [2020-09-24 15:10:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 15:10:04,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:04,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:04,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:10:04,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2043764254, now seen corresponding path program 1 times [2020-09-24 15:10:04,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:04,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993336838] [2020-09-24 15:10:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:10:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 15:10:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:10:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:10:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:10:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 15:10:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:10:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:04,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993336838] [2020-09-24 15:10:04,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:04,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:10:04,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076149345] [2020-09-24 15:10:04,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:10:04,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:04,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:10:04,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:10:04,815 INFO L87 Difference]: Start difference. First operand 347 states and 433 transitions. Second operand 8 states. [2020-09-24 15:10:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:06,221 INFO L93 Difference]: Finished difference Result 815 states and 1061 transitions. [2020-09-24 15:10:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:10:06,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-09-24 15:10:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:06,227 INFO L225 Difference]: With dead ends: 815 [2020-09-24 15:10:06,227 INFO L226 Difference]: Without dead ends: 503 [2020-09-24 15:10:06,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:10:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-09-24 15:10:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 338. [2020-09-24 15:10:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-24 15:10:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 418 transitions. [2020-09-24 15:10:06,282 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 418 transitions. Word has length 103 [2020-09-24 15:10:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:06,282 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 418 transitions. [2020-09-24 15:10:06,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:10:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 418 transitions. [2020-09-24 15:10:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 15:10:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:06,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:06,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:10:06,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash -891577735, now seen corresponding path program 1 times [2020-09-24 15:10:06,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:06,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400752497] [2020-09-24 15:10:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:10:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 15:10:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:10:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:10:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:10:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 15:10:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:10:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:06,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400752497] [2020-09-24 15:10:06,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:06,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:10:06,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990154031] [2020-09-24 15:10:06,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:10:06,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:06,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:10:06,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:10:06,529 INFO L87 Difference]: Start difference. First operand 338 states and 418 transitions. Second operand 7 states. [2020-09-24 15:10:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:08,269 INFO L93 Difference]: Finished difference Result 1254 states and 1740 transitions. [2020-09-24 15:10:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:10:08,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-09-24 15:10:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:08,288 INFO L225 Difference]: With dead ends: 1254 [2020-09-24 15:10:08,288 INFO L226 Difference]: Without dead ends: 951 [2020-09-24 15:10:08,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:10:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-09-24 15:10:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 685. [2020-09-24 15:10:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-09-24 15:10:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 880 transitions. [2020-09-24 15:10:08,420 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 880 transitions. Word has length 107 [2020-09-24 15:10:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:08,420 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 880 transitions. [2020-09-24 15:10:08,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:10:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 880 transitions. [2020-09-24 15:10:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 15:10:08,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:08,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:08,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:10:08,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:08,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1602138582, now seen corresponding path program 1 times [2020-09-24 15:10:08,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:08,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934564380] [2020-09-24 15:10:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:10:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 15:10:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:10:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:10:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:10:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 15:10:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:10:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:10:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 15:10:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 15:10:08,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934564380] [2020-09-24 15:10:08,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:08,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:10:08,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793199075] [2020-09-24 15:10:08,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:10:08,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:08,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:10:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:10:08,696 INFO L87 Difference]: Start difference. First operand 685 states and 880 transitions. Second operand 8 states. [2020-09-24 15:10:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:10,984 INFO L93 Difference]: Finished difference Result 2592 states and 3797 transitions. [2020-09-24 15:10:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:10:10,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-24 15:10:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:11,006 INFO L225 Difference]: With dead ends: 2592 [2020-09-24 15:10:11,006 INFO L226 Difference]: Without dead ends: 1943 [2020-09-24 15:10:11,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-09-24 15:10:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-09-24 15:10:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1454. [2020-09-24 15:10:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-09-24 15:10:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1985 transitions. [2020-09-24 15:10:11,203 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1985 transitions. Word has length 139 [2020-09-24 15:10:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:11,204 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1985 transitions. [2020-09-24 15:10:11,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:10:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1985 transitions. [2020-09-24 15:10:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 15:10:11,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:11,215 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:11,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:10:11,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1051815898, now seen corresponding path program 1 times [2020-09-24 15:10:11,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:11,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478391376] [2020-09-24 15:10:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:10:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 15:10:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:10:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:10:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:10:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 15:10:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:10:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:10:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 15:10:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:10:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:10:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:10:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:10:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 15:10:11,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478391376] [2020-09-24 15:10:11,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:11,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 15:10:11,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614159146] [2020-09-24 15:10:11,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 15:10:11,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:11,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 15:10:11,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:10:11,521 INFO L87 Difference]: Start difference. First operand 1454 states and 1985 transitions. Second operand 10 states. [2020-09-24 15:10:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:13,487 INFO L93 Difference]: Finished difference Result 3752 states and 5602 transitions. [2020-09-24 15:10:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 15:10:13,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 182 [2020-09-24 15:10:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:13,506 INFO L225 Difference]: With dead ends: 3752 [2020-09-24 15:10:13,506 INFO L226 Difference]: Without dead ends: 2339 [2020-09-24 15:10:13,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-09-24 15:10:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2020-09-24 15:10:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1810. [2020-09-24 15:10:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1810 states. [2020-09-24 15:10:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2415 transitions. [2020-09-24 15:10:13,650 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2415 transitions. Word has length 182 [2020-09-24 15:10:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:13,650 INFO L479 AbstractCegarLoop]: Abstraction has 1810 states and 2415 transitions. [2020-09-24 15:10:13,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 15:10:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2415 transitions. [2020-09-24 15:10:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 15:10:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:13,658 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:13,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:10:13,659 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1421271293, now seen corresponding path program 1 times [2020-09-24 15:10:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:13,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517934398] [2020-09-24 15:10:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:10:13,698 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:10:13,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:10:13,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:10:13,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:10:13 BoogieIcfgContainer [2020-09-24 15:10:13,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:10:13,740 INFO L168 Benchmark]: Toolchain (without parser) took 13462.02 ms. Allocated memory was 140.0 MB in the beginning and 392.7 MB in the end (delta: 252.7 MB). Free memory was 102.9 MB in the beginning and 143.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 212.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:10:13,740 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:10:13,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.21 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 88.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:10:13,742 INFO L168 Benchmark]: Boogie Preprocessor took 132.43 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 88.8 MB in the beginning and 179.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:10:13,743 INFO L168 Benchmark]: RCFGBuilder took 601.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 144.8 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:10:13,744 INFO L168 Benchmark]: TraceAbstraction took 12298.63 ms. Allocated memory was 201.9 MB in the beginning and 392.7 MB in the end (delta: 190.8 MB). Free memory was 144.8 MB in the beginning and 143.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 192.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:10:13,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.21 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 88.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.43 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 88.8 MB in the beginning and 179.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 144.8 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12298.63 ms. Allocated memory was 201.9 MB in the beginning and 392.7 MB in the end (delta: 190.8 MB). Free memory was 144.8 MB in the beginning and 143.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 192.3 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, 201 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1113 SDtfs, 3876 SDslu, 228 SDs, 0 SdLazy, 4758 SolverSat, 1422 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1810occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 158183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 80/80 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...