/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 11:53:23,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 11:53:23,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 11:53:23,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 11:53:23,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 11:53:23,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 11:53:23,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 11:53:23,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 11:53:23,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 11:53:23,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 11:53:23,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 11:53:23,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 11:53:23,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 11:53:23,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 11:53:23,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 11:53:23,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 11:53:23,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 11:53:23,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 11:53:23,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 11:53:23,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 11:53:23,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 11:53:23,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 11:53:23,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 11:53:23,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 11:53:23,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 11:53:23,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 11:53:23,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 11:53:23,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 11:53:23,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 11:53:23,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 11:53:23,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 11:53:23,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 11:53:23,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 11:53:23,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 11:53:23,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 11:53:23,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 11:53:23,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 11:53:23,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 11:53:23,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 11:53:23,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 11:53:23,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 11:53:23,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 11:53:23,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 11:53:23,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 11:53:23,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 11:53:23,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 11:53:23,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 11:53:23,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 11:53:23,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 11:53:23,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 11:53:23,356 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 11:53:23,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 11:53:23,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 11:53:23,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 11:53:23,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:53:23,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 11:53:23,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 11:53:23,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 11:53:23,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 11:53:23,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 11:53:23,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 11:53:23,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 11:53:23,363 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 11:53:23,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 11:53:23,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 11:53:23,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 11:53:23,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 11:53:23,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 11:53:23,560 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 11:53:23,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-01-18 11:53:23,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373692818/9c2d3d62ecf443dd816fc08799b4b40d/FLAG6ce818b42 [2022-01-18 11:53:23,955 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 11:53:23,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-01-18 11:53:23,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373692818/9c2d3d62ecf443dd816fc08799b4b40d/FLAG6ce818b42 [2022-01-18 11:53:23,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373692818/9c2d3d62ecf443dd816fc08799b4b40d [2022-01-18 11:53:23,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 11:53:23,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 11:53:23,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 11:53:23,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 11:53:23,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 11:53:23,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:53:23" (1/1) ... [2022-01-18 11:53:23,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be0d211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:23, skipping insertion in model container [2022-01-18 11:53:23,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:53:23" (1/1) ... [2022-01-18 11:53:23,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 11:53:24,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 11:53:24,182 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-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-01-18 11:53:24,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:53:24,197 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 11:53:24,225 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-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-01-18 11:53:24,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:53:24,238 INFO L208 MainTranslator]: Completed translation [2022-01-18 11:53:24,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24 WrapperNode [2022-01-18 11:53:24,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 11:53:24,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 11:53:24,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 11:53:24,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 11:53:24,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,292 INFO L137 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 315 [2022-01-18 11:53:24,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 11:53:24,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 11:53:24,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 11:53:24,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 11:53:24,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 11:53:24,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 11:53:24,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 11:53:24,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 11:53:24,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (1/1) ... [2022-01-18 11:53:24,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:53:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:53:24,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 11:53:24,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 11:53:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 11:53:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 11:53:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 11:53:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 11:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 11:53:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 11:53:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 11:53:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 11:53:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 11:53:24,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 11:53:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 11:53:24,378 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 11:53:24,443 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 11:53:24,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 11:53:24,821 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 11:53:24,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 11:53:24,997 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-18 11:53:24,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:53:24 BoogieIcfgContainer [2022-01-18 11:53:24,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 11:53:25,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 11:53:25,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 11:53:25,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 11:53:25,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 11:53:23" (1/3) ... [2022-01-18 11:53:25,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e043dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:53:25, skipping insertion in model container [2022-01-18 11:53:25,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:53:24" (2/3) ... [2022-01-18 11:53:25,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e043dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:53:25, skipping insertion in model container [2022-01-18 11:53:25,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:53:24" (3/3) ... [2022-01-18 11:53:25,019 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2022-01-18 11:53:25,022 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 11:53:25,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 11:53:25,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 11:53:25,022 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 11:53:25,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,082 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,082 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,089 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,089 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,090 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,090 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,090 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,091 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,092 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,094 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,094 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,094 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,094 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,094 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,095 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,095 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,095 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,095 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,095 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,097 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,097 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,099 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,103 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,103 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,103 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,104 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,105 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,105 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,105 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,105 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,105 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,106 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,107 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,108 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,115 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,116 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,117 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,117 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,117 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,117 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,117 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,118 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:53:25,123 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 11:53:25,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 11:53:25,159 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 11:53:25,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 11:53:25,170 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 239 places, 245 transitions, 522 flow [2022-01-18 11:53:25,691 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13350 states, 13349 states have (on average 4.983744100681699) internal successors, (66528), 13349 states have internal predecessors, (66528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 13350 states, 13349 states have (on average 4.983744100681699) internal successors, (66528), 13349 states have internal predecessors, (66528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-18 11:53:25,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:25,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:25,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1272815159, now seen corresponding path program 1 times [2022-01-18 11:53:25,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731635868] [2022-01-18 11:53:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:25,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:26,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:26,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731635868] [2022-01-18 11:53:26,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731635868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:26,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:26,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 11:53:26,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52181335] [2022-01-18 11:53:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:26,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 11:53:26,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 11:53:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 11:53:26,196 INFO L87 Difference]: Start difference. First operand has 13350 states, 13349 states have (on average 4.983744100681699) internal successors, (66528), 13349 states have internal predecessors, (66528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:26,429 INFO L93 Difference]: Finished difference Result 13350 states and 59573 transitions. [2022-01-18 11:53:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 11:53:26,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-01-18 11:53:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:26,556 INFO L225 Difference]: With dead ends: 13350 [2022-01-18 11:53:26,556 INFO L226 Difference]: Without dead ends: 13343 [2022-01-18 11:53:26,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 11:53:26,559 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:26,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:53:26,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13343 states. [2022-01-18 11:53:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13343 to 13343. [2022-01-18 11:53:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13343 states, 13342 states have (on average 4.464548043771549) internal successors, (59566), 13342 states have internal predecessors, (59566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 59566 transitions. [2022-01-18 11:53:27,210 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 59566 transitions. Word has length 182 [2022-01-18 11:53:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:27,211 INFO L470 AbstractCegarLoop]: Abstraction has 13343 states and 59566 transitions. [2022-01-18 11:53:27,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 59566 transitions. [2022-01-18 11:53:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-18 11:53:27,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:27,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:27,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 11:53:27,260 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1881360903, now seen corresponding path program 1 times [2022-01-18 11:53:27,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:27,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198442825] [2022-01-18 11:53:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:27,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:27,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:27,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198442825] [2022-01-18 11:53:27,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198442825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:27,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:27,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 11:53:27,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563713165] [2022-01-18 11:53:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:27,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 11:53:27,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 11:53:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 11:53:27,750 INFO L87 Difference]: Start difference. First operand 13343 states and 59566 transitions. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:28,193 INFO L93 Difference]: Finished difference Result 16771 states and 75228 transitions. [2022-01-18 11:53:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:53:28,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-01-18 11:53:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:28,299 INFO L225 Difference]: With dead ends: 16771 [2022-01-18 11:53:28,299 INFO L226 Difference]: Without dead ends: 16771 [2022-01-18 11:53:28,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-01-18 11:53:28,303 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 273 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:28,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1046 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2022-01-18 11:53:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 15057. [2022-01-18 11:53:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15057 states, 15056 states have (on average 4.476421360255048) internal successors, (67397), 15056 states have internal predecessors, (67397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15057 states to 15057 states and 67397 transitions. [2022-01-18 11:53:29,033 INFO L78 Accepts]: Start accepts. Automaton has 15057 states and 67397 transitions. Word has length 182 [2022-01-18 11:53:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:29,033 INFO L470 AbstractCegarLoop]: Abstraction has 15057 states and 67397 transitions. [2022-01-18 11:53:29,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15057 states and 67397 transitions. [2022-01-18 11:53:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-18 11:53:29,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:29,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 11:53:29,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1998083910, now seen corresponding path program 1 times [2022-01-18 11:53:29,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:29,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589173404] [2022-01-18 11:53:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:29,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:29,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:29,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589173404] [2022-01-18 11:53:29,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589173404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:29,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:29,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:53:29,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731535059] [2022-01-18 11:53:29,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:29,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:53:29,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:53:29,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:53:29,271 INFO L87 Difference]: Start difference. First operand 15057 states and 67397 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:29,716 INFO L93 Difference]: Finished difference Result 19545 states and 85465 transitions. [2022-01-18 11:53:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 11:53:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-01-18 11:53:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:29,873 INFO L225 Difference]: With dead ends: 19545 [2022-01-18 11:53:29,874 INFO L226 Difference]: Without dead ends: 15063 [2022-01-18 11:53:29,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 11:53:29,875 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 151 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:29,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 823 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15063 states. [2022-01-18 11:53:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15063 to 15058. [2022-01-18 11:53:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15058 states, 15057 states have (on average 4.476190476190476) internal successors, (67398), 15057 states have internal predecessors, (67398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15058 states to 15058 states and 67398 transitions. [2022-01-18 11:53:30,776 INFO L78 Accepts]: Start accepts. Automaton has 15058 states and 67398 transitions. Word has length 185 [2022-01-18 11:53:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:30,777 INFO L470 AbstractCegarLoop]: Abstraction has 15058 states and 67398 transitions. [2022-01-18 11:53:30,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15058 states and 67398 transitions. [2022-01-18 11:53:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:30,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:30,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:30,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 11:53:30,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2090838805, now seen corresponding path program 1 times [2022-01-18 11:53:30,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:30,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452093731] [2022-01-18 11:53:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:30,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:31,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:31,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452093731] [2022-01-18 11:53:31,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452093731] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:53:31,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094644049] [2022-01-18 11:53:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:31,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:53:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:53:31,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:53:31,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 11:53:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:31,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 11:53:31,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:53:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:32,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:53:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:32,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094644049] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 11:53:32,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 11:53:32,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 10] total 21 [2022-01-18 11:53:32,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936243352] [2022-01-18 11:53:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:32,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 11:53:32,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 11:53:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-01-18 11:53:32,645 INFO L87 Difference]: Start difference. First operand 15058 states and 67398 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:33,116 INFO L93 Difference]: Finished difference Result 28926 states and 130391 transitions. [2022-01-18 11:53:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 11:53:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:33,249 INFO L225 Difference]: With dead ends: 28926 [2022-01-18 11:53:33,249 INFO L226 Difference]: Without dead ends: 28926 [2022-01-18 11:53:33,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2022-01-18 11:53:33,250 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 529 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:33,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1209 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2022-01-18 11:53:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 18536. [2022-01-18 11:53:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18536 states, 18535 states have (on average 4.484758564877259) internal successors, (83125), 18535 states have internal predecessors, (83125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18536 states to 18536 states and 83125 transitions. [2022-01-18 11:53:33,893 INFO L78 Accepts]: Start accepts. Automaton has 18536 states and 83125 transitions. Word has length 192 [2022-01-18 11:53:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:33,894 INFO L470 AbstractCegarLoop]: Abstraction has 18536 states and 83125 transitions. [2022-01-18 11:53:33,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 18536 states and 83125 transitions. [2022-01-18 11:53:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:33,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:33,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:33,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 11:53:34,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:53:34,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash 863321777, now seen corresponding path program 2 times [2022-01-18 11:53:34,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:34,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863131190] [2022-01-18 11:53:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:34,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:34,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:34,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863131190] [2022-01-18 11:53:34,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863131190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:34,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:34,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:34,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741821133] [2022-01-18 11:53:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:34,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:34,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:34,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:34,233 INFO L87 Difference]: Start difference. First operand 18536 states and 83125 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:34,678 INFO L93 Difference]: Finished difference Result 26516 states and 119350 transitions. [2022-01-18 11:53:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:53:34,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:34,772 INFO L225 Difference]: With dead ends: 26516 [2022-01-18 11:53:34,773 INFO L226 Difference]: Without dead ends: 26516 [2022-01-18 11:53:34,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 11:53:34,773 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 155 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:34,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 998 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26516 states. [2022-01-18 11:53:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26516 to 18012. [2022-01-18 11:53:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18012 states, 18011 states have (on average 4.485536616512132) internal successors, (80789), 18011 states have internal predecessors, (80789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18012 states to 18012 states and 80789 transitions. [2022-01-18 11:53:35,449 INFO L78 Accepts]: Start accepts. Automaton has 18012 states and 80789 transitions. Word has length 192 [2022-01-18 11:53:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:35,449 INFO L470 AbstractCegarLoop]: Abstraction has 18012 states and 80789 transitions. [2022-01-18 11:53:35,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 18012 states and 80789 transitions. [2022-01-18 11:53:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:35,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:35,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:35,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 11:53:35,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash 998569369, now seen corresponding path program 3 times [2022-01-18 11:53:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:35,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014263282] [2022-01-18 11:53:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:35,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:35,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014263282] [2022-01-18 11:53:35,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014263282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:35,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:35,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:35,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415592105] [2022-01-18 11:53:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:35,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:35,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:35,637 INFO L87 Difference]: Start difference. First operand 18012 states and 80789 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:35,821 INFO L93 Difference]: Finished difference Result 23486 states and 106066 transitions. [2022-01-18 11:53:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 11:53:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:35,893 INFO L225 Difference]: With dead ends: 23486 [2022-01-18 11:53:35,894 INFO L226 Difference]: Without dead ends: 22772 [2022-01-18 11:53:35,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:35,897 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 184 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:35,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 494 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22772 states. [2022-01-18 11:53:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22772 to 20868. [2022-01-18 11:53:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20868 states, 20867 states have (on average 4.5036181530646475) internal successors, (93977), 20867 states have internal predecessors, (93977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20868 states to 20868 states and 93977 transitions. [2022-01-18 11:53:36,517 INFO L78 Accepts]: Start accepts. Automaton has 20868 states and 93977 transitions. Word has length 192 [2022-01-18 11:53:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:36,517 INFO L470 AbstractCegarLoop]: Abstraction has 20868 states and 93977 transitions. [2022-01-18 11:53:36,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20868 states and 93977 transitions. [2022-01-18 11:53:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:36,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:36,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:36,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 11:53:36,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 167337431, now seen corresponding path program 4 times [2022-01-18 11:53:36,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:36,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065765042] [2022-01-18 11:53:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:36,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:36,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065765042] [2022-01-18 11:53:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065765042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:36,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:36,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:36,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680208026] [2022-01-18 11:53:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:36,723 INFO L87 Difference]: Start difference. First operand 20868 states and 93977 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:37,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:37,182 INFO L93 Difference]: Finished difference Result 29968 states and 135963 transitions. [2022-01-18 11:53:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 11:53:37,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:37,286 INFO L225 Difference]: With dead ends: 29968 [2022-01-18 11:53:37,286 INFO L226 Difference]: Without dead ends: 29968 [2022-01-18 11:53:37,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:53:37,287 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 174 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:37,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 776 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29968 states. [2022-01-18 11:53:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29968 to 19202. [2022-01-18 11:53:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19202 states, 19201 states have (on average 4.506119472944118) internal successors, (86522), 19201 states have internal predecessors, (86522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19202 states to 19202 states and 86522 transitions. [2022-01-18 11:53:38,001 INFO L78 Accepts]: Start accepts. Automaton has 19202 states and 86522 transitions. Word has length 192 [2022-01-18 11:53:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:38,002 INFO L470 AbstractCegarLoop]: Abstraction has 19202 states and 86522 transitions. [2022-01-18 11:53:38,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 19202 states and 86522 transitions. [2022-01-18 11:53:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:38,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:38,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:38,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 11:53:38,045 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash 747091021, now seen corresponding path program 5 times [2022-01-18 11:53:38,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:38,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495764420] [2022-01-18 11:53:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:38,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:38,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495764420] [2022-01-18 11:53:38,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495764420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:38,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:38,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:38,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470370884] [2022-01-18 11:53:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:38,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:38,137 INFO L87 Difference]: Start difference. First operand 19202 states and 86522 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:38,449 INFO L93 Difference]: Finished difference Result 34746 states and 152662 transitions. [2022-01-18 11:53:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 11:53:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:38,576 INFO L225 Difference]: With dead ends: 34746 [2022-01-18 11:53:38,576 INFO L226 Difference]: Without dead ends: 34032 [2022-01-18 11:53:38,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:38,577 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 160 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:38,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 725 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34032 states. [2022-01-18 11:53:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34032 to 20868. [2022-01-18 11:53:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20868 states, 20867 states have (on average 4.492212584463507) internal successors, (93739), 20867 states have internal predecessors, (93739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20868 states to 20868 states and 93739 transitions. [2022-01-18 11:53:39,382 INFO L78 Accepts]: Start accepts. Automaton has 20868 states and 93739 transitions. Word has length 192 [2022-01-18 11:53:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:39,382 INFO L470 AbstractCegarLoop]: Abstraction has 20868 states and 93739 transitions. [2022-01-18 11:53:39,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20868 states and 93739 transitions. [2022-01-18 11:53:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:39,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:39,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:39,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 11:53:39,428 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash -84140917, now seen corresponding path program 6 times [2022-01-18 11:53:39,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:39,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638346639] [2022-01-18 11:53:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:39,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:39,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638346639] [2022-01-18 11:53:39,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638346639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:39,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:39,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:39,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912359405] [2022-01-18 11:53:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:39,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:39,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:39,520 INFO L87 Difference]: Start difference. First operand 20868 states and 93739 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:40,087 INFO L93 Difference]: Finished difference Result 40108 states and 178464 transitions. [2022-01-18 11:53:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 11:53:40,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:40,223 INFO L225 Difference]: With dead ends: 40108 [2022-01-18 11:53:40,223 INFO L226 Difference]: Without dead ends: 40108 [2022-01-18 11:53:40,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:53:40,225 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 202 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:40,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 590 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:53:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40108 states. [2022-01-18 11:53:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40108 to 18488. [2022-01-18 11:53:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18488 states, 18487 states have (on average 4.450316438578461) internal successors, (82273), 18487 states have internal predecessors, (82273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18488 states to 18488 states and 82273 transitions. [2022-01-18 11:53:41,026 INFO L78 Accepts]: Start accepts. Automaton has 18488 states and 82273 transitions. Word has length 192 [2022-01-18 11:53:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:41,026 INFO L470 AbstractCegarLoop]: Abstraction has 18488 states and 82273 transitions. [2022-01-18 11:53:41,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 18488 states and 82273 transitions. [2022-01-18 11:53:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:53:41,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:41,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:41,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 11:53:41,064 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash -972832335, now seen corresponding path program 7 times [2022-01-18 11:53:41,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:41,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743671434] [2022-01-18 11:53:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:41,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:53:41,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743671434] [2022-01-18 11:53:41,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743671434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:53:41,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:53:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:53:41,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518214982] [2022-01-18 11:53:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:53:41,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:53:41,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:53:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:41,121 INFO L87 Difference]: Start difference. First operand 18488 states and 82273 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:53:41,267 INFO L93 Difference]: Finished difference Result 20450 states and 88085 transitions. [2022-01-18 11:53:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 11:53:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-18 11:53:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:53:41,324 INFO L225 Difference]: With dead ends: 20450 [2022-01-18 11:53:41,324 INFO L226 Difference]: Without dead ends: 19022 [2022-01-18 11:53:41,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:53:41,324 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 146 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:53:41,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 526 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:53:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19022 states. [2022-01-18 11:53:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19022 to 15632. [2022-01-18 11:53:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15632 states, 15631 states have (on average 4.419742818757597) internal successors, (69085), 15631 states have internal predecessors, (69085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15632 states to 15632 states and 69085 transitions. [2022-01-18 11:53:41,978 INFO L78 Accepts]: Start accepts. Automaton has 15632 states and 69085 transitions. Word has length 192 [2022-01-18 11:53:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:53:41,978 INFO L470 AbstractCegarLoop]: Abstraction has 15632 states and 69085 transitions. [2022-01-18 11:53:41,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 15632 states and 69085 transitions. [2022-01-18 11:53:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-18 11:53:42,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:53:42,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:53:42,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 11:53:42,012 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:53:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:53:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1626697740, now seen corresponding path program 1 times [2022-01-18 11:53:42,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:53:42,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985269269] [2022-01-18 11:53:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:42,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:53:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:42,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:53:42,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985269269] [2022-01-18 11:53:42,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985269269] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:53:42,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250052645] [2022-01-18 11:53:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:53:42,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:53:42,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:53:43,012 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) [2022-01-18 11:53:43,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 11:53:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:53:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-18 11:53:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:53:43,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 11:53:43,258 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 11:53:43,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-18 11:53:43,329 INFO L353 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-01-18 11:53:43,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2022-01-18 11:53:44,557 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 11:53:44,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2022-01-18 11:53:44,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 11:53:45,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 11:53:46,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:53:46,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:53:46,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 11:53:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:46,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:53:48,980 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 11:53:48,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-01-18 11:53:48,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 335 [2022-01-18 11:53:48,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 290 [2022-01-18 11:53:48,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 242 [2022-01-18 11:53:48,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 11:53:50,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-01-18 11:53:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:53:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250052645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:53:50,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:53:50,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31, 31] total 77 [2022-01-18 11:53:50,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243278543] [2022-01-18 11:53:50,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:53:50,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 11:53:50,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:53:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 11:53:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=5352, Unknown=51, NotChecked=0, Total=5852 [2022-01-18 11:53:50,738 INFO L87 Difference]: Start difference. First operand 15632 states and 69085 transitions. Second operand has 77 states, 77 states have (on average 6.194805194805195) internal successors, (477), 77 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:53:53,448 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~q1_back~0 Int) (v_ArrVal_287 (Array Int Int)) (v_ArrVal_286 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_286)) (.cse1 (+ (* ~q1_back~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (or (<= c_~n1~0 ~q1_back~0) (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) 0) (< ~q1_back~0 0) (<= 1 (+ (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) c_~total~0))))) (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (forall ((~q1_back~0 Int) (v_ArrVal_287 (Array Int Int)) (v_ArrVal_286 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_286)) (.cse3 (+ (* ~q1_back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~n1~0 ~q1_back~0) (<= 1 (+ c_~total~0 (select (select (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3))) (<= (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3) 0) (< ~q1_back~0 0)))))) is different from false [2022-01-18 11:53:53,451 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1)) (.cse1 (+ |c_#StackHeapBarrier| 1))) (and .cse0 (<= .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base|) (<= 0 c_~total~0) (let ((.cse2 (= (select |c_#valid| |c_ULTIMATE.start_main_~#t3~0#1.base|) 1))) (or (and .cse0 (or (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t3~0#1.base|) .cse2)) (and (or (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse2) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base|) (forall ((~q1_back~0 Int) (v_ArrVal_287 (Array Int Int)) (v_ArrVal_286 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_286)) (.cse4 (+ (* ~q1_back~0 4) c_~q1~0.offset))) (or (<= c_~n1~0 ~q1_back~0) (<= (select (select .cse3 c_~q1~0.base) .cse4) 0) (<= 1 (+ (select (select (store (store .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_288) c_~q1~0.base) .cse4) c_~total~0)) (< ~q1_back~0 0)))) (= c_~total~0 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|) (<= .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base|))) is different from false [2022-01-18 11:53:54,351 WARN L838 $PredicateComparison]: unable to prove that (and (or (<= (+ c_~q1_back~0 1) c_~q1_front~0) (<= c_~n1~0 c_~q1_back~0) (< c_~q1_front~0 c_~q1_back~0) (< c_~q1_back~0 0) (forall ((v_ArrVal_287 (Array Int Int)) (v_ArrVal_286 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_286))) (or (<= 1 (+ (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_288) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0)) (not (= c_~C~0 (select (select .cse0 c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset))))))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (forall ((~q1_back~0 Int) (v_ArrVal_287 (Array Int Int)) (v_ArrVal_286 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_286)) (.cse2 (+ (* ~q1_back~0 4) c_~q1~0.offset))) (or (<= c_~n1~0 ~q1_back~0) (<= (select (select .cse1 c_~q1~0.base) .cse2) 0) (<= 1 (+ (select (select (store (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_288) c_~q1~0.base) .cse2) c_~total~0)) (< ~q1_back~0 0))))) is different from false [2022-01-18 11:54:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:06,149 INFO L93 Difference]: Finished difference Result 209206 states and 929280 transitions. [2022-01-18 11:54:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 11:54:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 6.194805194805195) internal successors, (477), 77 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-01-18 11:54:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:06,938 INFO L225 Difference]: With dead ends: 209206 [2022-01-18 11:54:06,938 INFO L226 Difference]: Without dead ends: 166360 [2022-01-18 11:54:06,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 368 SyntacticMatches, 24 SemanticMatches, 192 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12878 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4499, Invalid=31719, Unknown=84, NotChecked=1140, Total=37442 [2022-01-18 11:54:06,947 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 9542 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9542 SdHoareTripleChecker+Valid, 14888 SdHoareTripleChecker+Invalid, 10677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5794 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:06,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9542 Valid, 14888 Invalid, 10677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 4522 Invalid, 0 Unknown, 5794 Unchecked, 2.5s Time] [2022-01-18 11:54:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166360 states. [2022-01-18 11:54:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166360 to 52074. [2022-01-18 11:54:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52074 states, 52073 states have (on average 4.511474276496457) internal successors, (234926), 52073 states have internal predecessors, (234926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52074 states to 52074 states and 234926 transitions. [2022-01-18 11:54:09,539 INFO L78 Accepts]: Start accepts. Automaton has 52074 states and 234926 transitions. Word has length 195 [2022-01-18 11:54:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:09,539 INFO L470 AbstractCegarLoop]: Abstraction has 52074 states and 234926 transitions. [2022-01-18 11:54:09,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 6.194805194805195) internal successors, (477), 77 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 52074 states and 234926 transitions. [2022-01-18 11:54:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-18 11:54:09,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:09,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:54:09,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 11:54:09,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 11:54:09,899 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:54:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1178699188, now seen corresponding path program 2 times [2022-01-18 11:54:09,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:09,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459071016] [2022-01-18 11:54:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:09,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:54:10,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459071016] [2022-01-18 11:54:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459071016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:54:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922291352] [2022-01-18 11:54:10,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:54:10,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:54:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:54:10,869 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) [2022-01-18 11:54:10,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 11:54:10,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:54:10,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:54:10,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 11:54:10,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:54:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 11:54:12,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:54:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 11:54:12,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:54:13,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 11:54:13,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:54:13,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 11:54:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:54:13,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:54:13,682 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 11:54:13,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1362 treesize of output 1306 [2022-01-18 11:54:13,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 643 treesize of output 595 [2022-01-18 11:54:13,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1238 treesize of output 1046 [2022-01-18 11:54:13,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 950 [2022-01-18 11:54:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:54:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922291352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:54:20,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:54:20,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 69 [2022-01-18 11:54:20,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492305326] [2022-01-18 11:54:20,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:54:20,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-18 11:54:20,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-18 11:54:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=4361, Unknown=6, NotChecked=0, Total=4692 [2022-01-18 11:54:20,305 INFO L87 Difference]: Start difference. First operand 52074 states and 234926 transitions. Second operand has 69 states, 69 states have (on average 6.9855072463768115) internal successors, (482), 69 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:38,472 INFO L93 Difference]: Finished difference Result 315808 states and 1410271 transitions. [2022-01-18 11:54:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 11:54:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.9855072463768115) internal successors, (482), 69 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-01-18 11:54:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:40,902 INFO L225 Difference]: With dead ends: 315808 [2022-01-18 11:54:40,903 INFO L226 Difference]: Without dead ends: 267694 [2022-01-18 11:54:40,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 360 SyntacticMatches, 16 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12131 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=4571, Invalid=31699, Unknown=20, NotChecked=0, Total=36290 [2022-01-18 11:54:40,906 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 8467 mSDsluCounter, 17051 mSDsCounter, 0 mSdLazyCounter, 5667 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8467 SdHoareTripleChecker+Valid, 15587 SdHoareTripleChecker+Invalid, 7944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 5667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1865 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:40,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8467 Valid, 15587 Invalid, 7944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 5667 Invalid, 0 Unknown, 1865 Unchecked, 2.5s Time] [2022-01-18 11:54:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267694 states. [2022-01-18 11:54:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267694 to 67317. [2022-01-18 11:54:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67317 states, 67316 states have (on average 4.581377384277141) internal successors, (308400), 67316 states have internal predecessors, (308400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67317 states to 67317 states and 308400 transitions. [2022-01-18 11:54:46,349 INFO L78 Accepts]: Start accepts. Automaton has 67317 states and 308400 transitions. Word has length 195 [2022-01-18 11:54:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:46,349 INFO L470 AbstractCegarLoop]: Abstraction has 67317 states and 308400 transitions. [2022-01-18 11:54:46,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.9855072463768115) internal successors, (482), 69 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 67317 states and 308400 transitions. [2022-01-18 11:54:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-18 11:54:47,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:47,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:54:47,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 11:54:47,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:54:47,288 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:54:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash -514407345, now seen corresponding path program 1 times [2022-01-18 11:54:47,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:47,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586102715] [2022-01-18 11:54:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:47,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 11:54:47,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586102715] [2022-01-18 11:54:47,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586102715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:47,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:47,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:54:47,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380172011] [2022-01-18 11:54:47,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:47,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:54:47,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:54:47,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:54:47,365 INFO L87 Difference]: Start difference. First operand 67317 states and 308400 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:48,124 INFO L93 Difference]: Finished difference Result 93455 states and 413078 transitions. [2022-01-18 11:54:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:54:48,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2022-01-18 11:54:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:48,958 INFO L225 Difference]: With dead ends: 93455 [2022-01-18 11:54:48,959 INFO L226 Difference]: Without dead ends: 76663 [2022-01-18 11:54:48,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 11:54:48,960 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 533 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:48,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 603 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76663 states. [2022-01-18 11:54:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76663 to 72319. [2022-01-18 11:54:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72319 states, 72318 states have (on average 4.523216903122321) internal successors, (327110), 72318 states have internal predecessors, (327110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72319 states to 72319 states and 327110 transitions. [2022-01-18 11:54:51,740 INFO L78 Accepts]: Start accepts. Automaton has 72319 states and 327110 transitions. Word has length 198 [2022-01-18 11:54:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:51,740 INFO L470 AbstractCegarLoop]: Abstraction has 72319 states and 327110 transitions. [2022-01-18 11:54:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:54:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 72319 states and 327110 transitions. [2022-01-18 11:54:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-18 11:54:51,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:51,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:54:51,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 11:54:51,968 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:54:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash -564764263, now seen corresponding path program 3 times [2022-01-18 11:54:51,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:51,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037843175] [2022-01-18 11:54:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:51,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:54:53,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:53,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037843175] [2022-01-18 11:54:53,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037843175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:54:53,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396790778] [2022-01-18 11:54:53,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 11:54:53,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:54:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:54:53,252 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) [2022-01-18 11:54:53,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 11:54:53,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 11:54:53,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:54:53,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 11:54:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:54:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 11:54:54,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 11:54:54,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 11:54:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:54:54,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:54:54,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_406 (Array Int Int))) (<= 1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_406) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-01-18 11:54:54,726 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 11:54:54,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2022-01-18 11:54:54,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-18 11:54:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-01-18 11:54:55,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396790778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:54:55,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:54:55,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17, 17] total 54 [2022-01-18 11:54:55,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489593042] [2022-01-18 11:54:55,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:54:55,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-18 11:54:55,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-18 11:54:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2525, Unknown=1, NotChecked=102, Total=2862 [2022-01-18 11:54:55,274 INFO L87 Difference]: Start difference. First operand 72319 states and 327110 transitions. Second operand has 54 states, 54 states have (on average 8.851851851851851) internal successors, (478), 54 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:00,444 INFO L93 Difference]: Finished difference Result 117229 states and 518412 transitions. [2022-01-18 11:55:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 11:55:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 8.851851851851851) internal successors, (478), 54 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-01-18 11:55:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:01,090 INFO L225 Difference]: With dead ends: 117229 [2022-01-18 11:55:01,091 INFO L226 Difference]: Without dead ends: 114160 [2022-01-18 11:55:01,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 381 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1374, Invalid=9549, Unknown=1, NotChecked=206, Total=11130 [2022-01-18 11:55:01,094 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 2302 mSDsluCounter, 7431 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 488 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:01,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 7180 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2813 Invalid, 0 Unknown, 488 Unchecked, 1.1s Time] [2022-01-18 11:55:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114160 states. [2022-01-18 11:55:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114160 to 74353. [2022-01-18 11:55:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74353 states, 74352 states have (on average 4.50065902732946) internal successors, (334633), 74352 states have internal predecessors, (334633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74353 states to 74353 states and 334633 transitions. [2022-01-18 11:55:04,382 INFO L78 Accepts]: Start accepts. Automaton has 74353 states and 334633 transitions. Word has length 202 [2022-01-18 11:55:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:04,382 INFO L470 AbstractCegarLoop]: Abstraction has 74353 states and 334633 transitions. [2022-01-18 11:55:04,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 8.851851851851851) internal successors, (478), 54 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 74353 states and 334633 transitions. [2022-01-18 11:55:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-18 11:55:04,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:04,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:04,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 11:55:04,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:04,912 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:55:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2004726830, now seen corresponding path program 1 times [2022-01-18 11:55:04,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536993681] [2022-01-18 11:55:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:04,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 11:55:04,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:04,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536993681] [2022-01-18 11:55:04,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536993681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:04,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:55:04,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:55:04,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793251743] [2022-01-18 11:55:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:04,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:55:04,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:55:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:55:04,975 INFO L87 Difference]: Start difference. First operand 74353 states and 334633 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 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) [2022-01-18 11:55:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:06,204 INFO L93 Difference]: Finished difference Result 96882 states and 426913 transitions. [2022-01-18 11:55:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 11:55:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 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) Word has length 205 [2022-01-18 11:55:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:06,621 INFO L225 Difference]: With dead ends: 96882 [2022-01-18 11:55:06,621 INFO L226 Difference]: Without dead ends: 89427 [2022-01-18 11:55:06,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:55:06,621 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 139 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:06,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 516 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:55:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89427 states. [2022-01-18 11:55:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89427 to 78825. [2022-01-18 11:55:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78825 states, 78824 states have (on average 4.466824824926419) internal successors, (352093), 78824 states have internal predecessors, (352093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78825 states to 78825 states and 352093 transitions. [2022-01-18 11:55:09,217 INFO L78 Accepts]: Start accepts. Automaton has 78825 states and 352093 transitions. Word has length 205 [2022-01-18 11:55:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:09,217 INFO L470 AbstractCegarLoop]: Abstraction has 78825 states and 352093 transitions. [2022-01-18 11:55:09,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 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) [2022-01-18 11:55:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 78825 states and 352093 transitions. [2022-01-18 11:55:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-18 11:55:09,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:09,424 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 11:55:09,424 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:55:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash -692363974, now seen corresponding path program 4 times [2022-01-18 11:55:09,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:09,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733029694] [2022-01-18 11:55:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:09,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:09,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733029694] [2022-01-18 11:55:09,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733029694] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:09,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38736226] [2022-01-18 11:55:09,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 11:55:09,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:09,502 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) [2022-01-18 11:55:09,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 11:55:09,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 11:55:09,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:55:09,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 11:55:09,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:09,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:10,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38736226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:10,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:10,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-01-18 11:55:10,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457625010] [2022-01-18 11:55:10,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 11:55:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 11:55:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-18 11:55:10,295 INFO L87 Difference]: Start difference. First operand 78825 states and 352093 transitions. Second operand has 14 states, 14 states have (on average 17.785714285714285) internal successors, (249), 14 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:11,603 INFO L93 Difference]: Finished difference Result 128707 states and 571096 transitions. [2022-01-18 11:55:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 11:55:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.785714285714285) internal successors, (249), 14 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2022-01-18 11:55:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:12,661 INFO L225 Difference]: With dead ends: 128707 [2022-01-18 11:55:12,662 INFO L226 Difference]: Without dead ends: 121651 [2022-01-18 11:55:12,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-01-18 11:55:12,662 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 416 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:12,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1624 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:55:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121651 states. [2022-01-18 11:55:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121651 to 100177. [2022-01-18 11:55:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100177 states, 100176 states have (on average 4.490676409519246) internal successors, (449858), 100176 states have internal predecessors, (449858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100177 states to 100177 states and 449858 transitions. [2022-01-18 11:55:16,144 INFO L78 Accepts]: Start accepts. Automaton has 100177 states and 449858 transitions. Word has length 205 [2022-01-18 11:55:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:16,144 INFO L470 AbstractCegarLoop]: Abstraction has 100177 states and 449858 transitions. [2022-01-18 11:55:16,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.785714285714285) internal successors, (249), 14 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 100177 states and 449858 transitions. [2022-01-18 11:55:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-18 11:55:17,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:17,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:17,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 11:55:17,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 11:55:17,423 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:55:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1044484070, now seen corresponding path program 5 times [2022-01-18 11:55:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:17,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198976579] [2022-01-18 11:55:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:17,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:17,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198976579] [2022-01-18 11:55:17,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198976579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607298538] [2022-01-18 11:55:17,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 11:55:17,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:17,538 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) [2022-01-18 11:55:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 11:55:17,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 11:55:17,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:55:17,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 11:55:17,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:18,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 11:55:18,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607298538] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:18,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:18,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2022-01-18 11:55:18,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530173708] [2022-01-18 11:55:18,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:18,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 11:55:18,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 11:55:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-01-18 11:55:18,479 INFO L87 Difference]: Start difference. First operand 100177 states and 449858 transitions. Second operand has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:22,416 INFO L93 Difference]: Finished difference Result 247487 states and 1113583 transitions. [2022-01-18 11:55:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 11:55:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2022-01-18 11:55:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:24,767 INFO L225 Difference]: With dead ends: 247487 [2022-01-18 11:55:24,767 INFO L226 Difference]: Without dead ends: 245813 [2022-01-18 11:55:24,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=445, Invalid=1535, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 11:55:24,768 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1971 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:24,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 3127 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 11:55:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245813 states. [2022-01-18 11:55:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245813 to 99599. [2022-01-18 11:55:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99599 states, 99598 states have (on average 4.476997530070885) internal successors, (445900), 99598 states have internal predecessors, (445900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99599 states to 99599 states and 445900 transitions. [2022-01-18 11:55:30,411 INFO L78 Accepts]: Start accepts. Automaton has 99599 states and 445900 transitions. Word has length 205 [2022-01-18 11:55:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:30,412 INFO L470 AbstractCegarLoop]: Abstraction has 99599 states and 445900 transitions. [2022-01-18 11:55:30,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 99599 states and 445900 transitions. [2022-01-18 11:55:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-18 11:55:30,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:30,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:30,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 11:55:30,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 11:55:30,944 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:55:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1867267043, now seen corresponding path program 1 times [2022-01-18 11:55:30,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:30,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083326490] [2022-01-18 11:55:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:30,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 11:55:31,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:31,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083326490] [2022-01-18 11:55:31,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083326490] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:31,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317877480] [2022-01-18 11:55:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:31,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:31,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:31,201 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) [2022-01-18 11:55:31,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 11:55:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 11:55:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 11:55:32,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 11:55:33,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317877480] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:33,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:33,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 34 [2022-01-18 11:55:33,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91066796] [2022-01-18 11:55:33,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:33,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 11:55:33,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 11:55:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 11:55:33,860 INFO L87 Difference]: Start difference. First operand 99599 states and 445900 transitions. Second operand has 34 states, 34 states have (on average 15.382352941176471) internal successors, (523), 34 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:48,842 INFO L93 Difference]: Finished difference Result 504181 states and 2265562 transitions. [2022-01-18 11:55:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-01-18 11:55:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 15.382352941176471) internal successors, (523), 34 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2022-01-18 11:55:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:52,346 INFO L225 Difference]: With dead ends: 504181 [2022-01-18 11:55:52,346 INFO L226 Difference]: Without dead ends: 452308 [2022-01-18 11:55:52,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17533 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6664, Invalid=37646, Unknown=0, NotChecked=0, Total=44310 [2022-01-18 11:55:52,354 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 2955 mSDsluCounter, 16479 mSDsCounter, 0 mSdLazyCounter, 7425 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 15440 SdHoareTripleChecker+Invalid, 7683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 7425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:52,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2955 Valid, 15440 Invalid, 7683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 7425 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 11:55:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452308 states. [2022-01-18 11:56:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452308 to 132488. [2022-01-18 11:56:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132488 states, 132487 states have (on average 4.634130141070445) internal successors, (613962), 132487 states have internal predecessors, (613962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:56:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132488 states to 132488 states and 613962 transitions. [2022-01-18 11:56:02,272 INFO L78 Accepts]: Start accepts. Automaton has 132488 states and 613962 transitions. Word has length 208 [2022-01-18 11:56:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:56:02,272 INFO L470 AbstractCegarLoop]: Abstraction has 132488 states and 613962 transitions. [2022-01-18 11:56:02,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 15.382352941176471) internal successors, (523), 34 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:56:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 132488 states and 613962 transitions. [2022-01-18 11:56:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-18 11:56:02,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:56:02,660 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:56:02,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 11:56:02,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:56:02,877 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 11:56:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:56:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1749545573, now seen corresponding path program 6 times [2022-01-18 11:56:02,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:56:02,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313648123] [2022-01-18 11:56:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:56:02,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:56:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat