/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:02:59,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:02:59,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:02:59,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:02:59,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:02:59,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:02:59,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:02:59,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:02:59,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:02:59,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:02:59,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:02:59,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:02:59,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:02:59,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:02:59,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:02:59,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:02:59,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:02:59,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:02:59,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:02:59,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:02:59,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:02:59,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:02:59,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:02:59,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:02:59,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:02:59,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:02:59,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:02:59,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:02:59,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:02:59,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 19:02:59,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 19:02:59,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 19:02:59,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 19:02:59,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 19:02:59,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 19:02:59,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 19:02:59,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 19:02:59,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 19:02:59,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:02:59,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:02:59,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:02:59,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 19:02:59,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:02:59,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:02:59,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:02:59,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:02:59,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:02:59,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:02:59,787 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:02:59,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:02:59,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:02:59,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:02:59,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:02:59,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:02:59,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:02:59,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:02:59,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:02:59,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:02:59,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:02:59,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:02:59,791 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:02:59,791 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:02:59,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:02:59,791 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:03:00,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:03:00,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:03:00,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:03:00,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:03:00,046 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:03:00,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-03-15 19:03:00,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcdc243b/079ab5da32e2432a9a3048fd6d3c63ee/FLAG3eb8648ae [2022-03-15 19:03:00,483 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:03:00,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-03-15 19:03:00,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcdc243b/079ab5da32e2432a9a3048fd6d3c63ee/FLAG3eb8648ae [2022-03-15 19:03:00,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcdc243b/079ab5da32e2432a9a3048fd6d3c63ee [2022-03-15 19:03:00,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:03:00,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:03:00,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:03:00,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:03:00,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:03:00,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:03:00" (1/1) ... [2022-03-15 19:03:00,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110f8c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:00, skipping insertion in model container [2022-03-15 19:03:00,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:03:00" (1/1) ... [2022-03-15 19:03:00,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:03:00,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:03:01,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-03-15 19:03:01,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:03:01,135 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:03:01,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-03-15 19:03:01,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:03:01,191 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:03:01,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01 WrapperNode [2022-03-15 19:03:01,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:03:01,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:03:01,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:03:01,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:03:01,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,245 INFO L137 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-03-15 19:03:01,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:03:01,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:03:01,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:03:01,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:03:01,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:03:01,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:03:01,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:03:01,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:03:01,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (1/1) ... [2022-03-15 19:03:01,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:03:01,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:03:01,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 19:03:01,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 19:03:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:03:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:03:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:03:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:03:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:03:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 19:03:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 19:03:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 19:03:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 19:03:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:03:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:03:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:03:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:03:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:03:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:03:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:03:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:03:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:03:01,367 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 19:03:01,494 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:03:01,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:03:01,779 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:03:01,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:03:01,835 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 19:03:01,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:03:01 BoogieIcfgContainer [2022-03-15 19:03:01,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:03:01,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:03:01,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:03:01,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:03:01,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:03:00" (1/3) ... [2022-03-15 19:03:01,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40876afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:03:01, skipping insertion in model container [2022-03-15 19:03:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:03:01" (2/3) ... [2022-03-15 19:03:01,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40876afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:03:01, skipping insertion in model container [2022-03-15 19:03:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:03:01" (3/3) ... [2022-03-15 19:03:01,845 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-03-15 19:03:01,849 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:03:01,849 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:03:01,849 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:03:01,849 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:03:01,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,896 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,896 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,897 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,897 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,897 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,897 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,900 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,900 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,900 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,900 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,901 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,901 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,901 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,906 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,906 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,906 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,906 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,907 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,907 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:03:01,913 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 19:03:01,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:03:01,949 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 19:03:01,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 19:03:01,961 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:03:01,968 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 142 transitions, 316 flow [2022-03-15 19:03:01,970 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 142 transitions, 316 flow [2022-03-15 19:03:01,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-03-15 19:03:02,022 INFO L129 PetriNetUnfolder]: 2/138 cut-off events. [2022-03-15 19:03:02,023 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-03-15 19:03:02,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-03-15 19:03:02,028 INFO L116 LiptonReduction]: Number of co-enabled transitions 1302 [2022-03-15 19:03:06,140 INFO L131 LiptonReduction]: Checked pairs total: 6643 [2022-03-15 19:03:06,141 INFO L133 LiptonReduction]: Total number of compositions: 115 [2022-03-15 19:03:06,147 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 39 transitions, 110 flow [2022-03-15 19:03:06,270 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2186 states, 2185 states have (on average 3.575286041189931) internal successors, (7812), 2185 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 2186 states, 2185 states have (on average 3.575286041189931) internal successors, (7812), 2185 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:06,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:06,299 INFO L514 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] [2022-03-15 19:03:06,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 389461805, now seen corresponding path program 1 times [2022-03-15 19:03:06,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:06,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093347411] [2022-03-15 19:03:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:06,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:06,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093347411] [2022-03-15 19:03:06,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093347411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:06,649 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:06,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:03:06,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1871520294] [2022-03-15 19:03:06,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:06,659 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:06,738 INFO L252 McrAutomatonBuilder]: Finished intersection with 146 states and 275 transitions. [2022-03-15 19:03:06,738 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:07,719 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [4536#(or (< ~s~0 ~m2~0) (< (+ 2 ~s~0) ~m1~0)), 4533#(< ~s~0 ~m1~0), 4537#(or (< ~s~0 ~t~0) (< (+ 2 ~s~0) ~m1~0)), 4539#(< ~s~0 ~m2~0), 4538#(< ~s~0 (+ ~t~0 1)), 4535#(< (+ 2 ~s~0) ~m1~0), 4540#(< ~s~0 ~t~0), 4534#(< (+ ~s~0 1) ~m1~0)] [2022-03-15 19:03:07,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:03:07,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:03:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-15 19:03:07,743 INFO L87 Difference]: Start difference. First operand has 2186 states, 2185 states have (on average 3.575286041189931) internal successors, (7812), 2185 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:08,235 INFO L93 Difference]: Finished difference Result 4116 states and 12779 transitions. [2022-03-15 19:03:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:03:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:08,278 INFO L225 Difference]: With dead ends: 4116 [2022-03-15 19:03:08,278 INFO L226 Difference]: Without dead ends: 4116 [2022-03-15 19:03:08,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-03-15 19:03:08,281 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 110 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:08,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 117 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:03:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2022-03-15 19:03:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 2706. [2022-03-15 19:03:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2705 states have (on average 3.2125693160813307) internal successors, (8690), 2705 states have internal predecessors, (8690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 8690 transitions. [2022-03-15 19:03:08,455 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 8690 transitions. Word has length 34 [2022-03-15 19:03:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:08,456 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 8690 transitions. [2022-03-15 19:03:08,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 8690 transitions. [2022-03-15 19:03:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:08,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:08,465 INFO L514 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] [2022-03-15 19:03:08,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:03:08,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1775950949, now seen corresponding path program 2 times [2022-03-15 19:03:08,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:08,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832426647] [2022-03-15 19:03:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:08,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:08,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832426647] [2022-03-15 19:03:08,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832426647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:08,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:08,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:03:08,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1323521014] [2022-03-15 19:03:08,670 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:08,675 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:08,705 INFO L252 McrAutomatonBuilder]: Finished intersection with 128 states and 230 transitions. [2022-03-15 19:03:08,706 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:09,448 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [14084#(< (+ ~s~0 1) ~m1~0), 14089#(< ~s~0 (+ 2 ~t~0)), 14083#(< ~s~0 ~m1~0), 14087#(or (< ~s~0 ~t~0) (< (+ 2 ~s~0) ~m1~0)), 14085#(< (+ 2 ~s~0) ~m1~0), 14088#(or (< ~s~0 (+ ~t~0 1)) (< (+ 2 ~s~0) ~m1~0)), 14086#(or (< (+ 2 ~s~0) ~m1~0) (< ~s~0 ~m3~0))] [2022-03-15 19:03:09,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:03:09,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:03:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-15 19:03:09,450 INFO L87 Difference]: Start difference. First operand 2706 states and 8690 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:09,968 INFO L93 Difference]: Finished difference Result 3884 states and 12146 transitions. [2022-03-15 19:03:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:03:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:09,991 INFO L225 Difference]: With dead ends: 3884 [2022-03-15 19:03:09,991 INFO L226 Difference]: Without dead ends: 3846 [2022-03-15 19:03:09,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:03:09,992 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 173 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:09,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 166 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:03:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2022-03-15 19:03:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 2720. [2022-03-15 19:03:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 3.127620448694373) internal successors, (8504), 2719 states have internal predecessors, (8504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 8504 transitions. [2022-03-15 19:03:10,080 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 8504 transitions. Word has length 34 [2022-03-15 19:03:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:10,080 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 8504 transitions. [2022-03-15 19:03:10,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 8504 transitions. [2022-03-15 19:03:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:10,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:10,088 INFO L514 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] [2022-03-15 19:03:10,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:03:10,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 437514537, now seen corresponding path program 3 times [2022-03-15 19:03:10,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:10,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759470316] [2022-03-15 19:03:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:10,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:10,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759470316] [2022-03-15 19:03:10,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759470316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:10,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:10,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 19:03:10,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [939465310] [2022-03-15 19:03:10,273 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:10,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:10,334 INFO L252 McrAutomatonBuilder]: Finished intersection with 250 states and 539 transitions. [2022-03-15 19:03:10,335 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:13,783 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:03:13,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:03:13,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:03:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:03:13,787 INFO L87 Difference]: Start difference. First operand 2720 states and 8504 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:13,940 INFO L93 Difference]: Finished difference Result 3796 states and 11524 transitions. [2022-03-15 19:03:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:03:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:13,952 INFO L225 Difference]: With dead ends: 3796 [2022-03-15 19:03:13,952 INFO L226 Difference]: Without dead ends: 2008 [2022-03-15 19:03:13,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 63 SyntacticMatches, 154 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:03:13,954 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:13,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:03:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2022-03-15 19:03:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2022-03-15 19:03:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 3.001993024414549) internal successors, (6025), 2007 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 6025 transitions. [2022-03-15 19:03:14,012 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 6025 transitions. Word has length 34 [2022-03-15 19:03:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:14,012 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 6025 transitions. [2022-03-15 19:03:14,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 6025 transitions. [2022-03-15 19:03:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:14,020 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:14,020 INFO L514 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] [2022-03-15 19:03:14,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 19:03:14,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1736241743, now seen corresponding path program 4 times [2022-03-15 19:03:14,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:14,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359993606] [2022-03-15 19:03:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:14,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:14,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359993606] [2022-03-15 19:03:14,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359993606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:14,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:14,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 19:03:14,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1423320833] [2022-03-15 19:03:14,179 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:14,201 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:14,231 INFO L252 McrAutomatonBuilder]: Finished intersection with 128 states and 240 transitions. [2022-03-15 19:03:14,231 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:15,011 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [31264#(< ~s~0 (+ 3 ~t~0)), 31258#(or (< ~s~0 ~m1~0) (< ~s~0 ~t~0)), 31260#(or (< ~s~0 ~m1~0) (< ~s~0 (+ ~t~0 1))), 31259#(or (< ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~t~0)), 31252#(< ~s~0 ~m1~0), 31253#(or (< ~s~0 ~m1~0) (< ~s~0 ~m4~0)), 31254#(or (< ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~m4~0)), 31263#(or (< ~s~0 ~m1~0) (< ~s~0 (+ 2 ~t~0))), 31256#(< ~s~0 (+ ~t~0 1)), 31261#(or (< ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 31257#(<= (+ 2 ~s~0) ~t~0), 31255#(< ~s~0 ~t~0), 31262#(< ~s~0 (+ 2 ~t~0)), 31251#(< ~s~0 ~m4~0)] [2022-03-15 19:03:15,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 19:03:15,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:15,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 19:03:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-03-15 19:03:15,014 INFO L87 Difference]: Start difference. First operand 2008 states and 6025 transitions. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:15,527 INFO L93 Difference]: Finished difference Result 2332 states and 6319 transitions. [2022-03-15 19:03:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 19:03:15,528 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:15,538 INFO L225 Difference]: With dead ends: 2332 [2022-03-15 19:03:15,539 INFO L226 Difference]: Without dead ends: 2140 [2022-03-15 19:03:15,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 65 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:03:15,540 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 358 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:15,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 175 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:03:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-03-15 19:03:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1476. [2022-03-15 19:03:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 2.7579661016949153) internal successors, (4068), 1475 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4068 transitions. [2022-03-15 19:03:15,590 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4068 transitions. Word has length 34 [2022-03-15 19:03:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:15,590 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 4068 transitions. [2022-03-15 19:03:15,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4068 transitions. [2022-03-15 19:03:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:15,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:15,595 INFO L514 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] [2022-03-15 19:03:15,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 19:03:15,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1301645057, now seen corresponding path program 5 times [2022-03-15 19:03:15,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:15,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875307267] [2022-03-15 19:03:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:15,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:15,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:15,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875307267] [2022-03-15 19:03:15,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875307267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:15,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:15,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 19:03:15,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1537627940] [2022-03-15 19:03:15,722 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:15,727 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:15,775 INFO L252 McrAutomatonBuilder]: Finished intersection with 144 states and 289 transitions. [2022-03-15 19:03:15,775 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:16,476 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [36581#(or (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 36576#(<= (+ 3 ~s~0) ~m4~0), 36580#(or (< ~s~0 ~m2~0) (<= (+ 2 ~s~0) ~t~0)), 36579#(or (<= (+ 3 ~s~0) ~t~0) (< ~s~0 ~m2~0)), 36578#(or (< ~s~0 ~m2~0) (<= (+ 3 ~s~0) ~m4~0)), 36577#(<= (+ 3 ~s~0) ~t~0)] [2022-03-15 19:03:16,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:03:16,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:03:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:03:16,477 INFO L87 Difference]: Start difference. First operand 1476 states and 4068 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:17,120 INFO L93 Difference]: Finished difference Result 2746 states and 7071 transitions. [2022-03-15 19:03:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:03:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:17,132 INFO L225 Difference]: With dead ends: 2746 [2022-03-15 19:03:17,132 INFO L226 Difference]: Without dead ends: 2468 [2022-03-15 19:03:17,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:03:17,133 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 285 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:17,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 152 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:03:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-03-15 19:03:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1506. [2022-03-15 19:03:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 2.7235880398671095) internal successors, (4099), 1505 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 4099 transitions. [2022-03-15 19:03:17,172 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 4099 transitions. Word has length 34 [2022-03-15 19:03:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:17,173 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 4099 transitions. [2022-03-15 19:03:17,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 4099 transitions. [2022-03-15 19:03:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:17,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:17,177 INFO L514 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] [2022-03-15 19:03:17,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 19:03:17,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 959705247, now seen corresponding path program 6 times [2022-03-15 19:03:17,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:17,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301596284] [2022-03-15 19:03:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:17,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:17,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301596284] [2022-03-15 19:03:17,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301596284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:17,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:17,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 19:03:17,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1826852005] [2022-03-15 19:03:17,277 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:17,281 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:17,305 INFO L252 McrAutomatonBuilder]: Finished intersection with 124 states and 236 transitions. [2022-03-15 19:03:17,305 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:17,916 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [42386#(or (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 42381#(<= (+ 3 ~s~0) ~m1~0), 42385#(or (< ~s~0 ~m2~0) (<= (+ 2 ~s~0) ~t~0)), 42384#(or (<= (+ 3 ~s~0) ~t~0) (< ~s~0 ~m2~0)), 42383#(or (<= (+ 3 ~s~0) ~m1~0) (< ~s~0 ~m2~0)), 42382#(<= (+ 3 ~s~0) ~t~0)] [2022-03-15 19:03:17,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:03:17,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:03:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:03:17,917 INFO L87 Difference]: Start difference. First operand 1506 states and 4099 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:18,575 INFO L93 Difference]: Finished difference Result 2640 states and 6605 transitions. [2022-03-15 19:03:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:03:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:18,584 INFO L225 Difference]: With dead ends: 2640 [2022-03-15 19:03:18,585 INFO L226 Difference]: Without dead ends: 2018 [2022-03-15 19:03:18,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:03:18,586 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 268 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:18,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 200 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:03:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-03-15 19:03:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1204. [2022-03-15 19:03:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 2.57024106400665) internal successors, (3092), 1203 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 3092 transitions. [2022-03-15 19:03:18,615 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 3092 transitions. Word has length 34 [2022-03-15 19:03:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:18,615 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 3092 transitions. [2022-03-15 19:03:18,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 3092 transitions. [2022-03-15 19:03:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:18,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:18,618 INFO L514 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] [2022-03-15 19:03:18,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 19:03:18,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1153962715, now seen corresponding path program 7 times [2022-03-15 19:03:18,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:18,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786899631] [2022-03-15 19:03:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:18,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:18,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786899631] [2022-03-15 19:03:18,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786899631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:18,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:18,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 19:03:18,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1403877986] [2022-03-15 19:03:18,713 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:18,717 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:18,789 INFO L252 McrAutomatonBuilder]: Finished intersection with 194 states and 408 transitions. [2022-03-15 19:03:18,790 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:19,754 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [47477#(or (< ~s~0 ~m2~0) (<= (+ 2 ~s~0) ~t~0)), 47478#(or (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 47476#(or (<= (+ 2 ~s~0) ~m3~0) (< ~s~0 ~m2~0)), 47474#(<= (+ 2 ~s~0) ~m3~0), 47475#(<= (+ 2 ~s~0) ~t~0)] [2022-03-15 19:03:19,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:03:19,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:03:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-15 19:03:19,758 INFO L87 Difference]: Start difference. First operand 1204 states and 3092 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:20,142 INFO L93 Difference]: Finished difference Result 1164 states and 2505 transitions. [2022-03-15 19:03:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:03:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:20,157 INFO L225 Difference]: With dead ends: 1164 [2022-03-15 19:03:20,157 INFO L226 Difference]: Without dead ends: 928 [2022-03-15 19:03:20,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:03:20,158 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 124 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:20,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 117 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:03:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-03-15 19:03:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 674. [2022-03-15 19:03:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 2.2332838038632987) internal successors, (1503), 673 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1503 transitions. [2022-03-15 19:03:20,172 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1503 transitions. Word has length 34 [2022-03-15 19:03:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:20,172 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 1503 transitions. [2022-03-15 19:03:20,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1503 transitions. [2022-03-15 19:03:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:20,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:20,175 INFO L514 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] [2022-03-15 19:03:20,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 19:03:20,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 262567321, now seen corresponding path program 8 times [2022-03-15 19:03:20,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:20,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013606743] [2022-03-15 19:03:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:20,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:20,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013606743] [2022-03-15 19:03:20,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013606743] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:20,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:20,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-15 19:03:20,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [250459861] [2022-03-15 19:03:20,299 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:20,305 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:20,323 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 203 transitions. [2022-03-15 19:03:20,323 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:20,936 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [50016#(<= ~s~0 ~t~0), 50017#(<= (+ 3 ~s~0) ~m3~0), 50020#(and (or (< ~s~0 ~m2~0) (= ~s~0 0)) (or (<= 2 ~t~0) (< ~s~0 ~m2~0))), 50019#(and (or (< ~s~0 ~m2~0) (= ~s~0 0)) (or (< ~s~0 ~m2~0) (<= 3 ~t~0))), 50018#(or (< ~s~0 ~m2~0) (<= (+ 3 ~s~0) ~m3~0)), 50015#(<= (+ ~s~0 1) ~t~0), 50021#(and (or (< ~s~0 ~m2~0) (<= 1 ~t~0)) (or (< ~s~0 ~m2~0) (= ~s~0 0))), 50022#(and (or (<= 0 ~t~0) (< ~s~0 ~t~0)) (or (< ~s~0 ~t~0) (= ~s~0 0)))] [2022-03-15 19:03:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:03:20,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:03:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-03-15 19:03:20,938 INFO L87 Difference]: Start difference. First operand 674 states and 1503 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:21,599 INFO L93 Difference]: Finished difference Result 844 states and 1779 transitions. [2022-03-15 19:03:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 19:03:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:21,602 INFO L225 Difference]: With dead ends: 844 [2022-03-15 19:03:21,602 INFO L226 Difference]: Without dead ends: 656 [2022-03-15 19:03:21,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=840, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 19:03:21,603 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 205 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:21,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 220 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:03:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-03-15 19:03:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 558. [2022-03-15 19:03:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 2.1938958707360863) internal successors, (1222), 557 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1222 transitions. [2022-03-15 19:03:21,614 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1222 transitions. Word has length 34 [2022-03-15 19:03:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:21,614 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1222 transitions. [2022-03-15 19:03:21,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1222 transitions. [2022-03-15 19:03:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:03:21,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:03:21,616 INFO L514 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] [2022-03-15 19:03:21,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 19:03:21,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:03:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:03:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1764861831, now seen corresponding path program 9 times [2022-03-15 19:03:21,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:03:21,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466410581] [2022-03-15 19:03:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:03:21,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:03:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:03:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:03:21,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:03:21,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466410581] [2022-03-15 19:03:21,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466410581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:03:21,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:03:21,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 19:03:21,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1274661616] [2022-03-15 19:03:21,729 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:03:21,732 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:03:21,765 INFO L252 McrAutomatonBuilder]: Finished intersection with 100 states and 183 transitions. [2022-03-15 19:03:21,765 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:03:22,119 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [52026#(<= (+ 3 ~s~0) ~m2~0), 52029#(or (<= (+ 3 ~s~0) ~t~0) (< ~s~0 ~m3~0)), 52028#(or (<= (+ 3 ~s~0) ~m2~0) (< ~s~0 ~m3~0)), 52031#(or (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m3~0)), 52030#(or (<= (+ 2 ~s~0) ~t~0) (< ~s~0 ~m3~0)), 52027#(<= (+ 3 ~s~0) ~t~0)] [2022-03-15 19:03:22,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:03:22,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:03:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:03:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:03:22,120 INFO L87 Difference]: Start difference. First operand 558 states and 1222 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:03:22,410 INFO L93 Difference]: Finished difference Result 278 states and 552 transitions. [2022-03-15 19:03:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 19:03:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:03:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:03:22,411 INFO L225 Difference]: With dead ends: 278 [2022-03-15 19:03:22,411 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 19:03:22,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2022-03-15 19:03:22,412 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:03:22,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 65 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:03:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 19:03:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 19:03:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 19:03:22,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2022-03-15 19:03:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:03:22,413 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 19:03:22,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:03:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 19:03:22,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 19:03:22,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-03-15 19:03:22,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-03-15 19:03:22,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-03-15 19:03:22,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-03-15 19:03:22,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-03-15 19:03:22,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 19:03:22,419 INFO L732 BasicCegarLoop]: Path program histogram: [9] [2022-03-15 19:03:22,420 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 19:03:22,420 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 19:03:22,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 07:03:22 BasicIcfg [2022-03-15 19:03:22,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 19:03:22,422 INFO L158 Benchmark]: Toolchain (without parser) took 21539.60ms. Allocated memory was 176.2MB in the beginning and 399.5MB in the end (delta: 223.3MB). Free memory was 118.9MB in the beginning and 232.7MB in the end (delta: -113.9MB). Peak memory consumption was 111.0MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,423 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 19:03:22,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.01ms. Allocated memory was 176.2MB in the beginning and 265.3MB in the end (delta: 89.1MB). Free memory was 118.7MB in the beginning and 235.2MB in the end (delta: -116.5MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.71ms. Allocated memory is still 265.3MB. Free memory was 235.2MB in the beginning and 233.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,423 INFO L158 Benchmark]: Boogie Preprocessor took 34.81ms. Allocated memory is still 265.3MB. Free memory was 233.1MB in the beginning and 231.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,424 INFO L158 Benchmark]: RCFGBuilder took 554.88ms. Allocated memory is still 265.3MB. Free memory was 231.5MB in the beginning and 212.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,424 INFO L158 Benchmark]: TraceAbstraction took 20582.26ms. Allocated memory was 265.3MB in the beginning and 399.5MB in the end (delta: 134.2MB). Free memory was 211.6MB in the beginning and 232.7MB in the end (delta: -21.1MB). Peak memory consumption was 114.1MB. Max. memory is 8.0GB. [2022-03-15 19:03:22,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.01ms. Allocated memory was 176.2MB in the beginning and 265.3MB in the end (delta: 89.1MB). Free memory was 118.7MB in the beginning and 235.2MB in the end (delta: -116.5MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.71ms. Allocated memory is still 265.3MB. Free memory was 235.2MB in the beginning and 233.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.81ms. Allocated memory is still 265.3MB. Free memory was 233.1MB in the beginning and 231.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 554.88ms. Allocated memory is still 265.3MB. Free memory was 231.5MB in the beginning and 212.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 20582.26ms. Allocated memory was 265.3MB in the beginning and 399.5MB in the end (delta: 134.2MB). Free memory was 211.6MB in the beginning and 232.7MB in the end (delta: -21.1MB). Peak memory consumption was 114.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 153 PlacesBefore, 52 PlacesAfterwards, 142 TransitionsBefore, 39 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 115 TotalNumberOfCompositions, 6643 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3129, positive: 2900, positive conditional: 0, positive unconditional: 2900, negative: 229, negative conditional: 0, negative unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 642, positive: 617, positive conditional: 0, positive unconditional: 617, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3129, positive: 2283, positive conditional: 0, positive unconditional: 2283, negative: 204, negative conditional: 0, negative unconditional: 204, unknown: 642, unknown conditional: 0, unknown unconditional: 642] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 20.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1654 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1654 mSDsluCounter, 1216 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3525 mSDsCounter, 673 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6127 IncrementalHoareTripleChecker+Invalid, 6800 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 673 mSolverCounterUnsat, 172 mSDtfsCounter, 6127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1165 GetRequests, 788 SyntacticMatches, 178 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2720occurred in iteration=2, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 5328 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 1401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 19:03:22,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...