/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 09:15:27,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 09:15:27,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 09:15:27,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 09:15:27,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 09:15:27,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 09:15:27,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 09:15:27,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 09:15:27,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 09:15:27,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 09:15:27,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 09:15:27,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 09:15:27,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 09:15:27,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 09:15:27,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 09:15:27,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 09:15:27,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 09:15:27,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 09:15:27,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 09:15:27,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 09:15:27,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 09:15:27,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 09:15:27,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 09:15:27,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 09:15:27,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 09:15:27,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 09:15:27,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 09:15:27,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 09:15:27,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 09:15:27,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 09:15:27,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 09:15:27,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 09:15:27,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 09:15:27,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 09:15:27,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 09:15:27,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 09:15:27,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 09:15:27,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 09:15:27,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 09:15:27,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 09:15:27,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 09:15:27,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 09:15:27,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 09:15:27,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 09:15:27,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 09:15:27,870 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 09:15:27,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 09:15:27,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 09:15:27,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 09:15:27,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 09:15:27,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 09:15:27,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 09:15:27,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 09:15:27,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 09:15:27,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 09:15:27,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 09:15:27,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:27,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 09:15:27,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 09:15:27,876 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 09:15:27,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 09:15:28,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 09:15:28,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 09:15:28,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 09:15:28,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 09:15:28,123 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 09:15:28,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-18 09:15:28,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f5d6b51/a0d777133f5347c9964118e926cc51a4/FLAG04b627aba [2022-01-18 09:15:28,513 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 09:15:28,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-18 09:15:28,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f5d6b51/a0d777133f5347c9964118e926cc51a4/FLAG04b627aba [2022-01-18 09:15:28,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f5d6b51/a0d777133f5347c9964118e926cc51a4 [2022-01-18 09:15:28,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 09:15:28,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 09:15:28,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:28,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 09:15:28,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 09:15:28,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:28" (1/1) ... [2022-01-18 09:15:28,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1905f57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:28, skipping insertion in model container [2022-01-18 09:15:28,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:28" (1/1) ... [2022-01-18 09:15:28,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 09:15:28,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 09:15:29,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-18 09:15:29,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:29,257 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 09:15:29,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-18 09:15:29,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:29,362 INFO L208 MainTranslator]: Completed translation [2022-01-18 09:15:29,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29 WrapperNode [2022-01-18 09:15:29,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:29,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:29,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 09:15:29,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 09:15:29,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,418 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-18 09:15:29,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:29,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 09:15:29,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 09:15:29,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 09:15:29,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 09:15:29,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 09:15:29,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 09:15:29,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 09:15:29,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (1/1) ... [2022-01-18 09:15:29,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 09:15:29,493 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) [2022-01-18 09:15:29,504 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 [2022-01-18 09:15:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 09:15:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 09:15:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 09:15:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 09:15:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 09:15:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 09:15:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 09:15:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 09:15:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 09:15:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 09:15:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 09:15:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 09:15:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 09:15:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 09:15:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 09:15:29,534 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 09:15:29,639 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 09:15:29,640 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 09:15:29,819 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 09:15:29,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 09:15:29,826 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 09:15:29,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:29 BoogieIcfgContainer [2022-01-18 09:15:29,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 09:15:29,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 09:15:29,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 09:15:29,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 09:15:29,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 09:15:28" (1/3) ... [2022-01-18 09:15:29,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1373eaa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:29, skipping insertion in model container [2022-01-18 09:15:29,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:29" (2/3) ... [2022-01-18 09:15:29,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1373eaa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:29, skipping insertion in model container [2022-01-18 09:15:29,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:29" (3/3) ... [2022-01-18 09:15:29,835 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-01-18 09:15:29,839 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 09:15:29,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 09:15:29,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 09:15:29,839 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 09:15:29,874 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,875 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,876 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,876 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,876 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,876 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,877 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,877 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,877 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,877 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,877 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,878 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,879 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,880 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,880 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,880 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,880 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,880 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,881 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,881 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,881 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,884 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,884 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,884 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,884 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,886 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,887 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,887 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,887 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,893 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,893 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,893 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,893 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:29,897 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 09:15:29,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 09:15:29,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 09:15:29,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 09:15:29,986 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 98 places, 90 transitions, 195 flow [2022-01-18 09:15:30,255 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5659 states, 5658 states have (on average 3.4782608695652173) internal successors, (19680), 5658 states have internal predecessors, (19680), 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) [2022-01-18 09:15:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 5659 states, 5658 states have (on average 3.4782608695652173) internal successors, (19680), 5658 states have internal predecessors, (19680), 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) [2022-01-18 09:15:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 09:15:30,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:30,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:30,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1419924202, now seen corresponding path program 1 times [2022-01-18 09:15:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:30,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655563329] [2022-01-18 09:15:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:30,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655563329] [2022-01-18 09:15:30,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655563329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:30,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:30,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:30,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119311725] [2022-01-18 09:15:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:30,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:30,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:30,813 INFO L87 Difference]: Start difference. First operand has 5659 states, 5658 states have (on average 3.4782608695652173) internal successors, (19680), 5658 states have internal predecessors, (19680), 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 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-01-18 09:15:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:31,228 INFO L93 Difference]: Finished difference Result 9301 states and 31319 transitions. [2022-01-18 09:15:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 09:15:31,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2022-01-18 09:15:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:31,296 INFO L225 Difference]: With dead ends: 9301 [2022-01-18 09:15:31,297 INFO L226 Difference]: Without dead ends: 6177 [2022-01-18 09:15:31,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:31,303 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 169 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:31,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 639 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2022-01-18 09:15:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 5337. [2022-01-18 09:15:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5337 states, 5336 states have (on average 3.3615067466266866) internal successors, (17937), 5336 states have internal predecessors, (17937), 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) [2022-01-18 09:15:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 17937 transitions. [2022-01-18 09:15:31,713 INFO L78 Accepts]: Start accepts. Automaton has 5337 states and 17937 transitions. Word has length 54 [2022-01-18 09:15:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:31,714 INFO L470 AbstractCegarLoop]: Abstraction has 5337 states and 17937 transitions. [2022-01-18 09:15:31,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-01-18 09:15:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5337 states and 17937 transitions. [2022-01-18 09:15:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 09:15:31,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:31,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 09:15:31,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 194965707, now seen corresponding path program 1 times [2022-01-18 09:15:31,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:31,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751940466] [2022-01-18 09:15:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:31,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:31,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751940466] [2022-01-18 09:15:31,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751940466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:31,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:31,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868553498] [2022-01-18 09:15:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:31,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:31,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:31,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:31,993 INFO L87 Difference]: Start difference. First operand 5337 states and 17937 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2022-01-18 09:15:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:32,264 INFO L93 Difference]: Finished difference Result 7729 states and 25528 transitions. [2022-01-18 09:15:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 09:15:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2022-01-18 09:15:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:32,302 INFO L225 Difference]: With dead ends: 7729 [2022-01-18 09:15:32,303 INFO L226 Difference]: Without dead ends: 6119 [2022-01-18 09:15:32,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:32,307 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 177 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:32,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 611 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6119 states. [2022-01-18 09:15:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6119 to 5127. [2022-01-18 09:15:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 3.3435427233710495) internal successors, (17139), 5126 states have internal predecessors, (17139), 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) [2022-01-18 09:15:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 17139 transitions. [2022-01-18 09:15:32,538 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 17139 transitions. Word has length 56 [2022-01-18 09:15:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:32,540 INFO L470 AbstractCegarLoop]: Abstraction has 5127 states and 17139 transitions. [2022-01-18 09:15:32,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2022-01-18 09:15:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 17139 transitions. [2022-01-18 09:15:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-18 09:15:32,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:32,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:32,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 09:15:32,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash 475717098, now seen corresponding path program 1 times [2022-01-18 09:15:32,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:32,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525079921] [2022-01-18 09:15:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:32,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:32,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:32,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525079921] [2022-01-18 09:15:32,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525079921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:32,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:32,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250386407] [2022-01-18 09:15:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:32,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:32,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:32,728 INFO L87 Difference]: Start difference. First operand 5127 states and 17139 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2022-01-18 09:15:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:32,868 INFO L93 Difference]: Finished difference Result 6422 states and 21154 transitions. [2022-01-18 09:15:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:32,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 58 [2022-01-18 09:15:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:32,895 INFO L225 Difference]: With dead ends: 6422 [2022-01-18 09:15:32,895 INFO L226 Difference]: Without dead ends: 4672 [2022-01-18 09:15:32,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:32,897 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 135 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:32,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 345 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2022-01-18 09:15:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4672. [2022-01-18 09:15:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 4671 states have (on average 3.2810961250267607) internal successors, (15326), 4671 states have internal predecessors, (15326), 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) [2022-01-18 09:15:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 15326 transitions. [2022-01-18 09:15:33,105 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 15326 transitions. Word has length 58 [2022-01-18 09:15:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:33,105 INFO L470 AbstractCegarLoop]: Abstraction has 4672 states and 15326 transitions. [2022-01-18 09:15:33,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2022-01-18 09:15:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 15326 transitions. [2022-01-18 09:15:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 09:15:33,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:33,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:33,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 09:15:33,117 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash 243950234, now seen corresponding path program 1 times [2022-01-18 09:15:33,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:33,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623609064] [2022-01-18 09:15:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:33,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:33,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623609064] [2022-01-18 09:15:33,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623609064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:33,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:33,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:33,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068479041] [2022-01-18 09:15:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:33,209 INFO L87 Difference]: Start difference. First operand 4672 states and 15326 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-01-18 09:15:33,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:33,341 INFO L93 Difference]: Finished difference Result 4729 states and 15049 transitions. [2022-01-18 09:15:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 09:15:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2022-01-18 09:15:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:33,353 INFO L225 Difference]: With dead ends: 4729 [2022-01-18 09:15:33,353 INFO L226 Difference]: Without dead ends: 3244 [2022-01-18 09:15:33,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 09:15:33,362 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 225 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:33,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 395 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-01-18 09:15:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 3220. [2022-01-18 09:15:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 3219 states have (on average 3.1220876048462256) internal successors, (10050), 3219 states have internal predecessors, (10050), 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) [2022-01-18 09:15:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 10050 transitions. [2022-01-18 09:15:33,502 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 10050 transitions. Word has length 59 [2022-01-18 09:15:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:33,503 INFO L470 AbstractCegarLoop]: Abstraction has 3220 states and 10050 transitions. [2022-01-18 09:15:33,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-01-18 09:15:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 10050 transitions. [2022-01-18 09:15:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-18 09:15:33,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:33,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:33,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 09:15:33,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 372855995, now seen corresponding path program 1 times [2022-01-18 09:15:33,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:33,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046079194] [2022-01-18 09:15:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:33,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:33,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:33,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046079194] [2022-01-18 09:15:33,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046079194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:33,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:33,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:33,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405395405] [2022-01-18 09:15:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:33,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:33,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:33,662 INFO L87 Difference]: Start difference. First operand 3220 states and 10050 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2022-01-18 09:15:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:33,794 INFO L93 Difference]: Finished difference Result 2536 states and 7716 transitions. [2022-01-18 09:15:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 09:15:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2022-01-18 09:15:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:33,801 INFO L225 Difference]: With dead ends: 2536 [2022-01-18 09:15:33,801 INFO L226 Difference]: Without dead ends: 1627 [2022-01-18 09:15:33,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:33,802 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 290 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:33,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 400 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-01-18 09:15:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1483. [2022-01-18 09:15:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 2.9331983805668016) internal successors, (4347), 1482 states have internal predecessors, (4347), 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) [2022-01-18 09:15:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 4347 transitions. [2022-01-18 09:15:33,836 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 4347 transitions. Word has length 61 [2022-01-18 09:15:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:33,836 INFO L470 AbstractCegarLoop]: Abstraction has 1483 states and 4347 transitions. [2022-01-18 09:15:33,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2022-01-18 09:15:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 4347 transitions. [2022-01-18 09:15:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 09:15:33,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:33,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:33,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 09:15:33,841 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1454295303, now seen corresponding path program 1 times [2022-01-18 09:15:33,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182788892] [2022-01-18 09:15:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:33,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:33,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:33,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182788892] [2022-01-18 09:15:33,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182788892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:33,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:33,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:33,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845361557] [2022-01-18 09:15:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:33,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:33,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:33,958 INFO L87 Difference]: Start difference. First operand 1483 states and 4347 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:34,075 INFO L93 Difference]: Finished difference Result 2303 states and 6767 transitions. [2022-01-18 09:15:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 09:15:34,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-01-18 09:15:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:34,079 INFO L225 Difference]: With dead ends: 2303 [2022-01-18 09:15:34,079 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 09:15:34,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:34,080 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 110 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:34,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 501 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 09:15:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1035. [2022-01-18 09:15:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.8384912959381046) internal successors, (2935), 1034 states have internal predecessors, (2935), 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) [2022-01-18 09:15:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2935 transitions. [2022-01-18 09:15:34,099 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2935 transitions. Word has length 65 [2022-01-18 09:15:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:34,099 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2935 transitions. [2022-01-18 09:15:34,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2935 transitions. [2022-01-18 09:15:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 09:15:34,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:34,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:34,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 09:15:34,102 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:34,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash 999966841, now seen corresponding path program 2 times [2022-01-18 09:15:34,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:34,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573073046] [2022-01-18 09:15:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:34,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:34,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:34,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573073046] [2022-01-18 09:15:34,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573073046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:34,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:34,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:34,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665383165] [2022-01-18 09:15:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:34,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:34,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:34,204 INFO L87 Difference]: Start difference. First operand 1035 states and 2935 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:34,329 INFO L93 Difference]: Finished difference Result 1695 states and 4911 transitions. [2022-01-18 09:15:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:34,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2022-01-18 09:15:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:34,332 INFO L225 Difference]: With dead ends: 1695 [2022-01-18 09:15:34,333 INFO L226 Difference]: Without dead ends: 840 [2022-01-18 09:15:34,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-18 09:15:34,333 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 134 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:34,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 566 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-01-18 09:15:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-01-18 09:15:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 2.866507747318236) internal successors, (2405), 839 states have internal predecessors, (2405), 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) [2022-01-18 09:15:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2405 transitions. [2022-01-18 09:15:34,350 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2405 transitions. Word has length 65 [2022-01-18 09:15:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:34,350 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2405 transitions. [2022-01-18 09:15:34,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2405 transitions. [2022-01-18 09:15:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 09:15:34,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:34,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:34,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 09:15:34,353 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash 207293589, now seen corresponding path program 3 times [2022-01-18 09:15:34,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006927173] [2022-01-18 09:15:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:34,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:34,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:34,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006927173] [2022-01-18 09:15:34,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006927173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:34,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:34,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:34,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338247533] [2022-01-18 09:15:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:34,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:34,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:34,447 INFO L87 Difference]: Start difference. First operand 840 states and 2405 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:34,499 INFO L93 Difference]: Finished difference Result 786 states and 2243 transitions. [2022-01-18 09:15:34,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 09:15:34,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2022-01-18 09:15:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:34,500 INFO L225 Difference]: With dead ends: 786 [2022-01-18 09:15:34,500 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 09:15:34,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-18 09:15:34,500 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 89 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:34,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 349 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 09:15:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 09:15:34,501 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) [2022-01-18 09:15:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 09:15:34,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-01-18 09:15:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 09:15:34,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-01-18 09:15:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 09:15:34,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 09:15:34,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 09:15:34,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 09:15:34,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 09:15:34,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 09:15:34,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 09:15:34,507 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-01-18 09:15:34,508 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 09:15:34,508 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 09:15:34,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 09:15:34 BasicIcfg [2022-01-18 09:15:34,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 09:15:34,511 INFO L158 Benchmark]: Toolchain (without parser) took 5608.33ms. Allocated memory was 373.3MB in the beginning and 734.0MB in the end (delta: 360.7MB). Free memory was 315.5MB in the beginning and 558.2MB in the end (delta: -242.7MB). Peak memory consumption was 119.0MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,511 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:15:34,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.50ms. Allocated memory was 373.3MB in the beginning and 453.0MB in the end (delta: 79.7MB). Free memory was 315.3MB in the beginning and 415.1MB in the end (delta: -99.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.01ms. Allocated memory is still 453.0MB. Free memory was 415.1MB in the beginning and 413.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,512 INFO L158 Benchmark]: Boogie Preprocessor took 31.87ms. Allocated memory is still 453.0MB. Free memory was 413.0MB in the beginning and 412.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,512 INFO L158 Benchmark]: RCFGBuilder took 376.55ms. Allocated memory is still 453.0MB. Free memory was 412.0MB in the beginning and 397.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,512 INFO L158 Benchmark]: TraceAbstraction took 4680.22ms. Allocated memory was 453.0MB in the beginning and 734.0MB in the end (delta: 281.0MB). Free memory was 397.3MB in the beginning and 558.2MB in the end (delta: -160.9MB). Peak memory consumption was 119.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:34,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 457.50ms. Allocated memory was 373.3MB in the beginning and 453.0MB in the end (delta: 79.7MB). Free memory was 315.3MB in the beginning and 415.1MB in the end (delta: -99.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.01ms. Allocated memory is still 453.0MB. Free memory was 415.1MB in the beginning and 413.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.87ms. Allocated memory is still 453.0MB. Free memory was 413.0MB in the beginning and 412.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 376.55ms. Allocated memory is still 453.0MB. Free memory was 412.0MB in the beginning and 397.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4680.22ms. Allocated memory was 453.0MB in the beginning and 734.0MB in the end (delta: 281.0MB). Free memory was 397.3MB in the beginning and 558.2MB in the end (delta: -160.9MB). Peak memory consumption was 119.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 18]: 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 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1329 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1329 mSDsluCounter, 3806 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3084 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 484 IncrementalHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 822 mSDtfsCounter, 484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5659occurred in iteration=0, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2048 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 483 NumberOfCodeBlocks, 483 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 2139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-01-18 09:15:34,542 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...