/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 21:43:10,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 21:43:10,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 21:43:10,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 21:43:10,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 21:43:10,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 21:43:10,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 21:43:10,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 21:43:10,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 21:43:10,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 21:43:10,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 21:43:10,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 21:43:10,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 21:43:10,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 21:43:10,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 21:43:10,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 21:43:10,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 21:43:10,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 21:43:10,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 21:43:10,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 21:43:10,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 21:43:10,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 21:43:10,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 21:43:10,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 21:43:10,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-01 21:43:10,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 21:43:10,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 21:43:10,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 21:43:10,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 21:43:10,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 21:43:10,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 21:43:10,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 21:43:10,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 21:43:10,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 21:43:10,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 21:43:10,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 21:43:10,845 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-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf [2022-03-01 21:43:10,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 21:43:10,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 21:43:10,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 21:43:10,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 21:43:10,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 21:43:10,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 21:43:10,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 21:43:10,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 21:43:10,863 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 21:43:10,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 21:43:10,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 21:43:10,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 21:43:10,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 21:43:10,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 21:43:10,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 21:43:10,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 21:43:10,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 21:43:10,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 21:43:10,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 21:43:10,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 21:43:10,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 21:43:10,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 21:43:10,866 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-01 21:43:10,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 21:43:10,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 21:43:10,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 21:43:10,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 21:43:10,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 21:43:10,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-01 21:43:10,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 21:43:10,868 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-01 21:43:10,868 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-01 21:43:10,868 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-01 21:43:10,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 21:43:11,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 21:43:11,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 21:43:11,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 21:43:11,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 21:43:11,066 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 21:43:11,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-03-01 21:43:11,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384d6c79/acd3a37e0be3460dbf4a7db3140ba988/FLAG60cc89c21 [2022-03-01 21:43:11,495 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 21:43:11,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-03-01 21:43:11,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384d6c79/acd3a37e0be3460dbf4a7db3140ba988/FLAG60cc89c21 [2022-03-01 21:43:11,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384d6c79/acd3a37e0be3460dbf4a7db3140ba988 [2022-03-01 21:43:11,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 21:43:11,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 21:43:11,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 21:43:11,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 21:43:11,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 21:43:11,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 09:43:11" (1/1) ... [2022-03-01 21:43:11,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44660d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:11, skipping insertion in model container [2022-03-01 21:43:11,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 09:43:11" (1/1) ... [2022-03-01 21:43:11,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 21:43:11,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 21:43:12,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-03-01 21:43:12,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 21:43:12,165 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 21:43:12,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-03-01 21:43:12,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 21:43:12,221 INFO L208 MainTranslator]: Completed translation [2022-03-01 21:43:12,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12 WrapperNode [2022-03-01 21:43:12,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 21:43:12,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 21:43:12,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 21:43:12,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 21:43:12,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,268 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-03-01 21:43:12,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 21:43:12,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 21:43:12,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 21:43:12,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 21:43:12,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 21:43:12,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 21:43:12,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 21:43:12,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 21:43:12,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (1/1) ... [2022-03-01 21:43:12,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 21:43:12,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:12,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 21:43:12,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 21:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 21:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 21:43:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 21:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 21:43:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 21:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-01 21:43:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 21:43:12,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 21:43:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 21:43:12,360 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 21:43:12,428 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 21:43:12,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 21:43:12,611 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 21:43:12,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 21:43:12,663 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-01 21:43:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 09:43:12 BoogieIcfgContainer [2022-03-01 21:43:12,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 21:43:12,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 21:43:12,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 21:43:12,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 21:43:12,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 09:43:11" (1/3) ... [2022-03-01 21:43:12,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e92aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 09:43:12, skipping insertion in model container [2022-03-01 21:43:12,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 09:43:12" (2/3) ... [2022-03-01 21:43:12,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e92aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 09:43:12, skipping insertion in model container [2022-03-01 21:43:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 09:43:12" (3/3) ... [2022-03-01 21:43:12,678 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-03-01 21:43:12,683 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 21:43:12,683 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 21:43:12,683 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 21:43:12,684 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 21:43:12,720 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,721 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,721 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,721 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,722 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,722 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,724 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,725 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,725 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,725 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,726 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,726 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,726 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,727 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,728 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,729 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,730 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,730 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,730 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,730 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,730 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,731 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,737 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,737 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,738 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,738 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,739 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,740 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,740 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,740 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 21:43:12,744 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-01 21:43:12,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-01 21:43:12,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:12,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-01 21:43:12,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-01 21:43:12,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 21:43:12,825 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=false [2022-03-01 21:43:12,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-01 21:43:12,932 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 147 states. [2022-03-01 21:43:12,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2004744861, now seen corresponding path program 1 times [2022-03-01 21:43:12,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:12,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822980901] [2022-03-01 21:43:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:13,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:13,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822980901] [2022-03-01 21:43:13,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822980901] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 21:43:13,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 21:43:13,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 21:43:13,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759316377] [2022-03-01 21:43:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 21:43:13,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 21:43:13,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 21:43:13,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 21:43:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,159 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:13,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,233 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 147 states. [2022-03-01 21:43:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 21:43:13,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 803970203, now seen corresponding path program 1 times [2022-03-01 21:43:13,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:13,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616195151] [2022-03-01 21:43:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:13,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:13,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:13,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616195151] [2022-03-01 21:43:13,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616195151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 21:43:13,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 21:43:13,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 21:43:13,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700050803] [2022-03-01 21:43:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 21:43:13,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 21:43:13,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 21:43:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-01 21:43:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,478 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:13,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:13,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,573 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 193 transitions and produced 182 states. [2022-03-01 21:43:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:13,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 21:43:13,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2005528861, now seen corresponding path program 1 times [2022-03-01 21:43:13,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:13,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075439445] [2022-03-01 21:43:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:13,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:13,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075439445] [2022-03-01 21:43:13,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075439445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 21:43:13,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 21:43:13,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 21:43:13,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545173844] [2022-03-01 21:43:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 21:43:13,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 21:43:13,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 21:43:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-01 21:43:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,859 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:13,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:13,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:13,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:13,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,002 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 327 transitions and produced 238 states. [2022-03-01 21:43:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:14,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 21:43:14,004 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash -38592100, now seen corresponding path program 1 times [2022-03-01 21:43:14,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:14,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068777136] [2022-03-01 21:43:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:14,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:14,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068777136] [2022-03-01 21:43:14,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068777136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 21:43:14,227 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 21:43:14,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 21:43:14,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439886182] [2022-03-01 21:43:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 21:43:14,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 21:43:14,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 21:43:14,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 21:43:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,232 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:14,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,411 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 593 transitions and produced 340 states. [2022-03-01 21:43:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:14,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 21:43:14,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2004781980, now seen corresponding path program 1 times [2022-03-01 21:43:14,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:14,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353089222] [2022-03-01 21:43:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:14,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:14,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353089222] [2022-03-01 21:43:14,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353089222] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:43:14,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731110242] [2022-03-01 21:43:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:14,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:14,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:14,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:43:14,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 21:43:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:14,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 21:43:14,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:43:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:15,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:43:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:15,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731110242] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:43:15,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:43:15,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2022-03-01 21:43:15,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480794374] [2022-03-01 21:43:15,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:43:15,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 21:43:15,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 21:43:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-03-01 21:43:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:15,989 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:15,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:15,990 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:15,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:15,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:15,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:15,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:16,359 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 599 transitions and produced 346 states. [2022-03-01 21:43:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:43:16,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 21:43:16,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:16,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 639443934, now seen corresponding path program 1 times [2022-03-01 21:43:16,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:16,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575974272] [2022-03-01 21:43:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:16,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:16,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575974272] [2022-03-01 21:43:16,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575974272] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:43:16,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849239232] [2022-03-01 21:43:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:16,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:16,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:43:16,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 21:43:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 21:43:16,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:43:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:17,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:43:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:19,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849239232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:43:19,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:43:19,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-03-01 21:43:19,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136493312] [2022-03-01 21:43:19,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:43:19,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 21:43:19,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 21:43:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-01 21:43:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:19,585 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:19,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.294117647058824) internal successors, (158), 17 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:43:19,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:20,065 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 646 transitions and produced 381 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:43:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:43:20,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 21:43:20,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:20,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1485392992, now seen corresponding path program 2 times [2022-03-01 21:43:20,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:20,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765646059] [2022-03-01 21:43:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:20,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:20,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765646059] [2022-03-01 21:43:20,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765646059] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:43:20,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541604946] [2022-03-01 21:43:20,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 21:43:20,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:20,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:20,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:43:20,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 21:43:20,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 21:43:20,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:43:20,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 21:43:20,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:43:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:20,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:43:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:21,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541604946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:43:21,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:43:21,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 18 [2022-03-01 21:43:21,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816931273] [2022-03-01 21:43:21,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:43:21,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 21:43:21,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:43:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 21:43:21,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-03-01 21:43:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:21,579 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:43:21,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:43:21,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:43:21,580 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:22,340 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1306 transitions and produced 635 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:43:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:43:22,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 21:43:22,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:22,552 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:43:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:43:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1581486723, now seen corresponding path program 3 times [2022-03-01 21:43:22,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:43:22,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864753638] [2022-03-01 21:43:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:43:22,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:43:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:43:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:22,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:43:22,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864753638] [2022-03-01 21:43:22,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864753638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:43:22,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721319156] [2022-03-01 21:43:22,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 21:43:22,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:43:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:43:22,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:43:22,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 21:43:22,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 21:43:22,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:43:22,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 21:43:22,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:43:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:43:23,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:44:01,113 WARN L228 SmtUtils]: Spent 32.72s on a formula simplification. DAG size of input: 93 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:44:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:03,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721319156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:44:03,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:44:03,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 26 [2022-03-01 21:44:03,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731854509] [2022-03-01 21:44:03,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:44:03,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 21:44:03,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:44:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 21:44:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=559, Unknown=2, NotChecked=0, Total=650 [2022-03-01 21:44:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:03,087 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:44:03,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:44:03,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:03,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:03,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:03,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:03,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:03,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:03,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:03,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:05,230 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1359 transitions and produced 673 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:44:05,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-01 21:44:05,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:05,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:44:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:44:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash -633422591, now seen corresponding path program 4 times [2022-03-01 21:44:05,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:44:05,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001206925] [2022-03-01 21:44:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:44:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:44:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:44:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:05,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:44:05,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001206925] [2022-03-01 21:44:05,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001206925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:44:05,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886736514] [2022-03-01 21:44:05,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 21:44:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:44:05,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:44:05,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 21:44:05,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 21:44:05,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:44:05,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 21:44:05,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:44:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:06,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:44:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:07,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886736514] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:44:07,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:44:07,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 26 [2022-03-01 21:44:07,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764670083] [2022-03-01 21:44:07,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:44:07,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 21:44:07,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:44:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 21:44:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-03-01 21:44:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:07,560 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:44:07,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:07,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:07,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:44:07,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:09,550 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2320 transitions and produced 1055 states. [2022-03-01 21:44:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 21:44:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:44:09,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 21:44:09,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:09,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:44:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:44:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1229124416, now seen corresponding path program 5 times [2022-03-01 21:44:09,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:44:09,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971033804] [2022-03-01 21:44:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:44:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:44:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:44:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:10,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:44:10,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971033804] [2022-03-01 21:44:10,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971033804] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:44:10,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865689958] [2022-03-01 21:44:10,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 21:44:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:44:10,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:44:10,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 21:44:10,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 21:44:10,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:44:10,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 21:44:10,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:44:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:10,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:44:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:11,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865689958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:44:11,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:44:11,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 31 [2022-03-01 21:44:11,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179865773] [2022-03-01 21:44:11,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:44:11,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 21:44:11,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:44:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 21:44:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-03-01 21:44:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:11,483 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:44:11,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:44:11,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:13,174 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2285 transitions and produced 1031 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 21:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:44:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 21:44:13,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 21:44:13,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:13,392 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:44:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:44:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1738132862, now seen corresponding path program 6 times [2022-03-01 21:44:13,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:44:13,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477732303] [2022-03-01 21:44:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:44:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:44:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:44:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:13,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:44:13,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477732303] [2022-03-01 21:44:13,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477732303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:44:13,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79484410] [2022-03-01 21:44:13,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 21:44:13,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:44:13,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:44:13,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:44:13,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 21:44:13,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 21:44:13,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:44:13,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 21:44:13,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:44:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:44:15,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:44:52,821 WARN L228 SmtUtils]: Spent 14.09s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:45:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:45:01,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79484410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:45:01,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:45:01,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 19] total 43 [2022-03-01 21:45:01,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911584259] [2022-03-01 21:45:01,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:45:01,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-01 21:45:01,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:45:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-01 21:45:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1629, Unknown=4, NotChecked=0, Total=1806 [2022-03-01 21:45:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:45:01,920 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:45:01,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.883720930232558) internal successors, (210), 43 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-03-01 21:45:01,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:45:19,823 WARN L228 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 99 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:45:42,009 WARN L228 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 120 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:46:08,964 WARN L228 SmtUtils]: Spent 24.89s on a formula simplification. DAG size of input: 122 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:46:26,136 WARN L228 SmtUtils]: Spent 16.61s on a formula simplification. DAG size of input: 124 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:46:42,101 WARN L228 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 107 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:46:44,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:46:46,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:47:26,190 WARN L228 SmtUtils]: Spent 37.39s on a formula simplification. DAG size of input: 127 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:47:53,479 WARN L228 SmtUtils]: Spent 21.66s on a formula simplification. DAG size of input: 134 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:47:55,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:48:11,628 WARN L228 SmtUtils]: Spent 11.48s on a formula simplification. DAG size of input: 129 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:48:48,361 WARN L228 SmtUtils]: Spent 35.05s on a formula simplification. DAG size of input: 131 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:48:51,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-01 21:48:54,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:48:56,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:48:58,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:49:00,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:49:14,800 WARN L228 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 114 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:49:17,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:49:19,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:49:37,792 WARN L228 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 104 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:50:02,424 WARN L228 SmtUtils]: Spent 12.64s on a formula simplification. DAG size of input: 118 DAG size of output: 101 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:50:24,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:50:26,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:50:29,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:50:49,006 WARN L228 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 119 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:50:51,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:50:52,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:50:54,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:51:57,233 WARN L228 SmtUtils]: Spent 59.06s on a formula simplification. DAG size of input: 119 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:52:36,045 WARN L228 SmtUtils]: Spent 38.04s on a formula simplification. DAG size of input: 121 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:52:49,585 WARN L228 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 123 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:52:51,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:52:53,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:52:56,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:53:17,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 21:53:36,075 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3512 transitions and produced 1472 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:53:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:53:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 21:53:36,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 21:53:36,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-01 21:53:36,280 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:53:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:53:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 172573025, now seen corresponding path program 7 times [2022-03-01 21:53:36,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:53:36,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327589535] [2022-03-01 21:53:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:53:36,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:53:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:53:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:53:36,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:53:36,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327589535] [2022-03-01 21:53:36,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327589535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:53:36,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328336314] [2022-03-01 21:53:36,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 21:53:36,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:53:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:53:36,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:53:36,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 21:53:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:53:36,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 21:53:36,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:53:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:53:37,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:53:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:53:38,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328336314] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:53:38,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:53:38,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 35 [2022-03-01 21:53:38,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21693565] [2022-03-01 21:53:38,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:53:38,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 21:53:38,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:53:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 21:53:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=955, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 21:53:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:53:38,830 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:53:38,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.2) internal successors, (147), 35 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:53:38,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:53:38,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:53:38,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2022-03-01 21:53:38,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:53:42,276 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3518 transitions and produced 1478 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 21:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:53:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:53:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 21:53:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 21:53:42,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 21:53:42,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:53:42,478 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 21:53:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 21:53:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 823229539, now seen corresponding path program 8 times [2022-03-01 21:53:42,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 21:53:42,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817204864] [2022-03-01 21:53:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 21:53:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 21:53:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 21:53:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:53:43,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 21:53:43,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817204864] [2022-03-01 21:53:43,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817204864] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 21:53:43,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004854870] [2022-03-01 21:53:43,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 21:53:43,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 21:53:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 21:53:43,065 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 21:53:43,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 21:53:43,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 21:53:43,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 21:53:43,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-01 21:53:43,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 21:53:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:53:46,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 21:56:05,494 WARN L228 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 165 DAG size of output: 114 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:56:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 21:56:40,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004854870] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 21:56:40,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 21:56:40,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 50 [2022-03-01 21:56:40,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968846307] [2022-03-01 21:56:40,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 21:56:40,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-01 21:56:40,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 21:56:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-01 21:56:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2234, Unknown=20, NotChecked=0, Total=2450 [2022-03-01 21:56:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:56:40,175 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 21:56:40,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.5) internal successors, (225), 50 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2022-03-01 21:56:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-03-01 21:56:40,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 21:57:06,129 WARN L228 SmtUtils]: Spent 19.05s on a formula simplification. DAG size of input: 152 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 21:57:21,894 WARN L228 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 148 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-01 21:57:39,523 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 21:57:39,561 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 21:57:39,561 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 21:57:40,024 WARN L244 SmtUtils]: Removed 17 from assertion stack [2022-03-01 21:57:40,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 21:57:40,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-01 21:57:40,225 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 181 for 8458ms.. [2022-03-01 21:57:40,228 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-03-01 21:57:40,228 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-01 21:57:40,228 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-01 21:57:40,228 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-01 21:57:40,233 INFO L732 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1] [2022-03-01 21:57:40,234 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 21:57:40,234 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 21:57:40,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 09:57:40 BasicIcfg [2022-03-01 21:57:40,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 21:57:40,236 INFO L158 Benchmark]: Toolchain (without parser) took 868326.19ms. Allocated memory was 195.0MB in the beginning and 490.7MB in the end (delta: 295.7MB). Free memory was 136.6MB in the beginning and 71.9MB in the end (delta: 64.7MB). Peak memory consumption was 362.5MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,237 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 21:57:40,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.06ms. Allocated memory was 195.0MB in the beginning and 259.0MB in the end (delta: 64.0MB). Free memory was 136.4MB in the beginning and 227.9MB in the end (delta: -91.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.62ms. Allocated memory is still 259.0MB. Free memory was 227.9MB in the beginning and 226.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,237 INFO L158 Benchmark]: Boogie Preprocessor took 16.87ms. Allocated memory is still 259.0MB. Free memory was 226.5MB in the beginning and 225.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,238 INFO L158 Benchmark]: RCFGBuilder took 378.91ms. Allocated memory is still 259.0MB. Free memory was 225.1MB in the beginning and 210.7MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,238 INFO L158 Benchmark]: TraceAbstraction took 867568.18ms. Allocated memory was 259.0MB in the beginning and 490.7MB in the end (delta: 231.7MB). Free memory was 210.0MB in the beginning and 71.9MB in the end (delta: 138.1MB). Peak memory consumption was 371.6MB. Max. memory is 8.0GB. [2022-03-01 21:57:40,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.06ms. Allocated memory was 195.0MB in the beginning and 259.0MB in the end (delta: 64.0MB). Free memory was 136.4MB in the beginning and 227.9MB in the end (delta: -91.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.62ms. Allocated memory is still 259.0MB. Free memory was 227.9MB in the beginning and 226.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.87ms. Allocated memory is still 259.0MB. Free memory was 226.5MB in the beginning and 225.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 378.91ms. Allocated memory is still 259.0MB. Free memory was 225.1MB in the beginning and 210.7MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 867568.18ms. Allocated memory was 259.0MB in the beginning and 490.7MB in the end (delta: 231.7MB). Free memory was 210.0MB in the beginning and 71.9MB in the end (delta: 138.1MB). Peak memory consumption was 371.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - 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 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 181 for 8458ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 181 for 8458ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 181 for 8458ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 181 for 8458ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 867.5s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 585.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 278.2s InterpolantComputationTime, 1748 NumberOfCodeBlocks, 1748 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2448 ConstructedInterpolants, 114 QuantifiedInterpolants, 42584 SizeOfPredicates, 82 NumberOfNonLiveVariables, 1871 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 34/404 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown