/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-commit-1.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 11:54:28,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 11:54:28,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 11:54:28,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 11:54:28,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 11:54:28,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 11:54:28,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 11:54:28,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 11:54:28,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 11:54:29,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 11:54:29,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 11:54:29,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 11:54:29,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 11:54:29,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 11:54:29,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 11:54:29,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 11:54:29,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 11:54:29,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 11:54:29,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 11:54:29,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 11:54:29,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 11:54:29,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 11:54:29,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 11:54:29,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 11:54:29,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 11:54:29,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 11:54:29,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 11:54:29,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 11:54:29,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 11:54:29,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 11:54:29,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 11:54:29,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 11:54:29,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 11:54:29,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 11:54:29,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 11:54:29,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 11:54:29,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 11:54:29,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 11:54:29,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 11:54:29,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 11:54:29,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 11:54:29,038 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 11:54:29,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 11:54:29,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 11:54:29,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 11:54:29,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 11:54:29,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 11:54:29,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 11:54:29,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 11:54:29,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 11:54:29,065 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 11:54:29,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 11:54:29,066 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 11:54:29,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 11:54:29,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 11:54:29,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 11:54:29,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 11:54:29,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 11:54:29,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 11:54:29,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 11:54:29,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 11:54:29,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 11:54:29,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:54:29,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 11:54:29,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 11:54:29,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 11:54:29,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 11:54:29,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 11:54:29,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 11:54:29,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 11:54:29,070 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 11:54:29,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 11:54:29,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 11:54:29,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 11:54:29,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 11:54:29,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 11:54:29,293 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 11:54:29,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2022-01-18 11:54:29,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edaae900d/300521d6a4764bf19380c2d6cd501faf/FLAG6b834879e [2022-01-18 11:54:29,726 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 11:54:29,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2022-01-18 11:54:29,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edaae900d/300521d6a4764bf19380c2d6cd501faf/FLAG6b834879e [2022-01-18 11:54:30,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edaae900d/300521d6a4764bf19380c2d6cd501faf [2022-01-18 11:54:30,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 11:54:30,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 11:54:30,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 11:54:30,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 11:54:30,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 11:54:30,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372b3c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30, skipping insertion in model container [2022-01-18 11:54:30,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 11:54:30,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 11:54:30,384 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-commit-1.wvr-bad.c[5161,5174] [2022-01-18 11:54:30,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:54:30,410 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 11:54:30,438 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-commit-1.wvr-bad.c[5161,5174] [2022-01-18 11:54:30,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:54:30,452 INFO L208 MainTranslator]: Completed translation [2022-01-18 11:54:30,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30 WrapperNode [2022-01-18 11:54:30,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 11:54:30,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 11:54:30,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 11:54:30,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 11:54:30,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,493 INFO L137 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 336 [2022-01-18 11:54:30,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 11:54:30,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 11:54:30,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 11:54:30,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 11:54:30,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 11:54:30,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 11:54:30,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 11:54:30,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 11:54:30,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (1/1) ... [2022-01-18 11:54:30,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:54:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:54:30,568 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 11:54:30,598 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 11:54:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 11:54:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 11:54:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 11:54:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 11:54:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 11:54:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 11:54:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 11:54:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 11:54:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 11:54:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 11:54:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 11:54:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 11:54:30,617 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 11:54:30,742 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 11:54:30,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 11:54:31,216 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 11:54:31,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 11:54:31,341 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-18 11:54:31,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:54:31 BoogieIcfgContainer [2022-01-18 11:54:31,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 11:54:31,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 11:54:31,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 11:54:31,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 11:54:31,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 11:54:30" (1/3) ... [2022-01-18 11:54:31,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c146edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:54:31, skipping insertion in model container [2022-01-18 11:54:31,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:54:30" (2/3) ... [2022-01-18 11:54:31,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c146edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:54:31, skipping insertion in model container [2022-01-18 11:54:31,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:54:31" (3/3) ... [2022-01-18 11:54:31,352 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2022-01-18 11:54:31,358 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 11:54:31,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 11:54:31,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 11:54:31,358 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 11:54:31,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,431 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,431 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,431 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,431 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,433 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,433 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,433 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,441 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,442 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,443 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,443 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,445 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:54:31,450 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 11:54:31,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 11:54:31,511 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 11:54:31,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 11:54:31,523 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 256 places, 273 transitions, 570 flow [2022-01-18 11:54:31,852 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7034 states, 7033 states have (on average 4.403810607137779) internal successors, (30972), 7033 states have internal predecessors, (30972), 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 11:54:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 7034 states, 7033 states have (on average 4.403810607137779) internal successors, (30972), 7033 states have internal predecessors, (30972), 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 11:54:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-18 11:54:31,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:31,959 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 11:54:31,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -334718937, now seen corresponding path program 1 times [2022-01-18 11:54:31,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:31,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117148978] [2022-01-18 11:54:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:31,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:32,237 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 11:54:32,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117148978] [2022-01-18 11:54:32,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117148978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:32,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:32,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 11:54:32,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947137310] [2022-01-18 11:54:32,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:32,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 11:54:32,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 11:54:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 11:54:32,294 INFO L87 Difference]: Start difference. First operand has 7034 states, 7033 states have (on average 4.403810607137779) internal successors, (30972), 7033 states have internal predecessors, (30972), 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 92.5) internal successors, (185), 2 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 11:54:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:32,643 INFO L93 Difference]: Finished difference Result 7034 states and 29229 transitions. [2022-01-18 11:54:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 11:54:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 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 11:54:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:32,743 INFO L225 Difference]: With dead ends: 7034 [2022-01-18 11:54:32,743 INFO L226 Difference]: Without dead ends: 7027 [2022-01-18 11:54:32,745 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 11:54:32,748 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:32,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7027 states. [2022-01-18 11:54:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7027 to 7027. [2022-01-18 11:54:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 7026 states have (on average 4.159123256475946) internal successors, (29222), 7026 states have internal predecessors, (29222), 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 11:54:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 29222 transitions. [2022-01-18 11:54:33,153 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 29222 transitions. Word has length 185 [2022-01-18 11:54:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:33,153 INFO L470 AbstractCegarLoop]: Abstraction has 7027 states and 29222 transitions. [2022-01-18 11:54:33,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 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 11:54:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 29222 transitions. [2022-01-18 11:54:33,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 11:54:33,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:33,183 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] [2022-01-18 11:54:33,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 11:54:33,184 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2110720401, now seen corresponding path program 1 times [2022-01-18 11:54:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:33,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671948975] [2022-01-18 11:54:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:33,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:33,551 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 11:54:33,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:33,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671948975] [2022-01-18 11:54:33,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671948975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:33,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:33,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 11:54:33,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477980150] [2022-01-18 11:54:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:33,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 11:54:33,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 11:54:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:54:33,557 INFO L87 Difference]: Start difference. First operand 7027 states and 29222 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 11:54:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:33,900 INFO L93 Difference]: Finished difference Result 13887 states and 58274 transitions. [2022-01-18 11:54:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 11:54:33,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 188 [2022-01-18 11:54:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:34,007 INFO L225 Difference]: With dead ends: 13887 [2022-01-18 11:54:34,007 INFO L226 Difference]: Without dead ends: 13565 [2022-01-18 11:54:34,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 11:54:34,014 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:34,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 727 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:54:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13565 states. [2022-01-18 11:54:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13565 to 11589. [2022-01-18 11:54:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11589 states, 11588 states have (on average 4.234294097342078) internal successors, (49067), 11588 states have internal predecessors, (49067), 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 11:54:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11589 states to 11589 states and 49067 transitions. [2022-01-18 11:54:34,709 INFO L78 Accepts]: Start accepts. Automaton has 11589 states and 49067 transitions. Word has length 188 [2022-01-18 11:54:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:34,712 INFO L470 AbstractCegarLoop]: Abstraction has 11589 states and 49067 transitions. [2022-01-18 11:54:34,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 11:54:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 11589 states and 49067 transitions. [2022-01-18 11:54:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:54:34,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:34,836 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 11:54:34,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 11:54:34,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash 146949394, now seen corresponding path program 1 times [2022-01-18 11:54:34,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651173810] [2022-01-18 11:54:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:34,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:35,034 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 11:54:35,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:35,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651173810] [2022-01-18 11:54:35,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651173810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:35,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:35,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:54:35,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256645939] [2022-01-18 11:54:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:35,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:54:35,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:54:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:35,037 INFO L87 Difference]: Start difference. First operand 11589 states and 49067 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:35,320 INFO L93 Difference]: Finished difference Result 23014 states and 97293 transitions. [2022-01-18 11:54:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:54:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:35,483 INFO L225 Difference]: With dead ends: 23014 [2022-01-18 11:54:35,483 INFO L226 Difference]: Without dead ends: 22420 [2022-01-18 11:54:35,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:35,489 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 48 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:35,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 400 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22420 states. [2022-01-18 11:54:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22420 to 17850. [2022-01-18 11:54:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17850 states, 17849 states have (on average 4.327413300465012) internal successors, (77240), 17849 states have internal predecessors, (77240), 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 11:54:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17850 states to 17850 states and 77240 transitions. [2022-01-18 11:54:36,524 INFO L78 Accepts]: Start accepts. Automaton has 17850 states and 77240 transitions. Word has length 192 [2022-01-18 11:54:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:36,526 INFO L470 AbstractCegarLoop]: Abstraction has 17850 states and 77240 transitions. [2022-01-18 11:54:36,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17850 states and 77240 transitions. [2022-01-18 11:54:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-18 11:54:36,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:36,619 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 11:54:36,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 11:54:36,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2094017848, now seen corresponding path program 1 times [2022-01-18 11:54:36,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:36,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099719094] [2022-01-18 11:54:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:36,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:36,852 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 11:54:36,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099719094] [2022-01-18 11:54:36,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099719094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:36,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:36,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:54:36,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044121680] [2022-01-18 11:54:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:36,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:54:36,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:54:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:36,854 INFO L87 Difference]: Start difference. First operand 17850 states and 77240 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:37,346 INFO L93 Difference]: Finished difference Result 34720 states and 150369 transitions. [2022-01-18 11:54:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:54:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:37,591 INFO L225 Difference]: With dead ends: 34720 [2022-01-18 11:54:37,591 INFO L226 Difference]: Without dead ends: 34048 [2022-01-18 11:54:37,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:37,592 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 84 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:37,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 316 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34048 states. [2022-01-18 11:54:38,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34048 to 28858. [2022-01-18 11:54:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28858 states, 28857 states have (on average 4.421804068336972) internal successors, (127600), 28857 states have internal predecessors, (127600), 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 11:54:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28858 states to 28858 states and 127600 transitions. [2022-01-18 11:54:38,867 INFO L78 Accepts]: Start accepts. Automaton has 28858 states and 127600 transitions. Word has length 192 [2022-01-18 11:54:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:38,868 INFO L470 AbstractCegarLoop]: Abstraction has 28858 states and 127600 transitions. [2022-01-18 11:54:38,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 11:54:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 28858 states and 127600 transitions. [2022-01-18 11:54:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-18 11:54:38,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:38,992 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] [2022-01-18 11:54:38,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 11:54:38,993 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash 443362995, now seen corresponding path program 1 times [2022-01-18 11:54:38,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:38,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163259097] [2022-01-18 11:54:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:38,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:39,059 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 11:54:39,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:39,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163259097] [2022-01-18 11:54:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163259097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:39,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:39,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:54:39,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689090207] [2022-01-18 11:54:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:54:39,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:54:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:39,061 INFO L87 Difference]: Start difference. First operand 28858 states and 127600 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 11:54:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:39,549 INFO L93 Difference]: Finished difference Result 36678 states and 158104 transitions. [2022-01-18 11:54:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:54:39,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 193 [2022-01-18 11:54:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:39,906 INFO L225 Difference]: With dead ends: 36678 [2022-01-18 11:54:39,906 INFO L226 Difference]: Without dead ends: 36678 [2022-01-18 11:54:39,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:39,908 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 62 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:39,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 291 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36678 states. [2022-01-18 11:54:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36678 to 30785. [2022-01-18 11:54:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30785 states, 30784 states have (on average 4.354404885654886) internal successors, (134046), 30784 states have internal predecessors, (134046), 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 11:54:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30785 states to 30785 states and 134046 transitions. [2022-01-18 11:54:40,922 INFO L78 Accepts]: Start accepts. Automaton has 30785 states and 134046 transitions. Word has length 193 [2022-01-18 11:54:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:40,922 INFO L470 AbstractCegarLoop]: Abstraction has 30785 states and 134046 transitions. [2022-01-18 11:54:40,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 11:54:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 30785 states and 134046 transitions. [2022-01-18 11:54:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-18 11:54:40,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:40,997 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] [2022-01-18 11:54:40,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 11:54:40,998 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:40,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash -679441705, now seen corresponding path program 1 times [2022-01-18 11:54:40,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:40,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043024912] [2022-01-18 11:54:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:40,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:54:41,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043024912] [2022-01-18 11:54:41,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043024912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:41,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:41,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:54:41,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263458519] [2022-01-18 11:54:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:54:41,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:54:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:54:41,100 INFO L87 Difference]: Start difference. First operand 30785 states and 134046 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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 11:54:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:41,825 INFO L93 Difference]: Finished difference Result 42783 states and 178873 transitions. [2022-01-18 11:54:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 11:54:41,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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 196 [2022-01-18 11:54:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:41,973 INFO L225 Difference]: With dead ends: 42783 [2022-01-18 11:54:41,974 INFO L226 Difference]: Without dead ends: 36321 [2022-01-18 11:54:41,974 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 11:54:41,975 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 197 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:41,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 787 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:54:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36321 states. [2022-01-18 11:54:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36321 to 35479. [2022-01-18 11:54:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35479 states, 35478 states have (on average 4.263233553187891) internal successors, (151251), 35478 states have internal predecessors, (151251), 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 11:54:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35479 states to 35479 states and 151251 transitions. [2022-01-18 11:54:43,040 INFO L78 Accepts]: Start accepts. Automaton has 35479 states and 151251 transitions. Word has length 196 [2022-01-18 11:54:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 35479 states and 151251 transitions. [2022-01-18 11:54:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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 11:54:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 35479 states and 151251 transitions. [2022-01-18 11:54:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-18 11:54:43,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:43,135 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] [2022-01-18 11:54:43,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 11:54:43,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 24820010, now seen corresponding path program 1 times [2022-01-18 11:54:43,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488543528] [2022-01-18 11:54:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:43,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:43,506 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 11:54:43,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:43,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488543528] [2022-01-18 11:54:43,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488543528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:43,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:43,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:54:43,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174223014] [2022-01-18 11:54:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:43,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:54:43,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:54:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:43,508 INFO L87 Difference]: Start difference. First operand 35479 states and 151251 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 11:54:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:43,737 INFO L93 Difference]: Finished difference Result 25320 states and 104975 transitions. [2022-01-18 11:54:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:54:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 197 [2022-01-18 11:54:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:43,829 INFO L225 Difference]: With dead ends: 25320 [2022-01-18 11:54:43,829 INFO L226 Difference]: Without dead ends: 24769 [2022-01-18 11:54:43,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:43,830 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 78 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:43,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 296 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:54:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24769 states. [2022-01-18 11:54:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24769 to 19684. [2022-01-18 11:54:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19684 states, 19683 states have (on average 4.256566580297719) internal successors, (83782), 19683 states have internal predecessors, (83782), 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 11:54:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19684 states to 19684 states and 83782 transitions. [2022-01-18 11:54:44,398 INFO L78 Accepts]: Start accepts. Automaton has 19684 states and 83782 transitions. Word has length 197 [2022-01-18 11:54:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:44,398 INFO L470 AbstractCegarLoop]: Abstraction has 19684 states and 83782 transitions. [2022-01-18 11:54:44,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 11:54:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 19684 states and 83782 transitions. [2022-01-18 11:54:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-18 11:54:44,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:44,444 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] [2022-01-18 11:54:44,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 11:54:44,444 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:44,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1695141506, now seen corresponding path program 1 times [2022-01-18 11:54:44,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:44,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326186733] [2022-01-18 11:54:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:44,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:45,769 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 11:54:45,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:45,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326186733] [2022-01-18 11:54:45,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326186733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:54:45,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593455039] [2022-01-18 11:54:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:45,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:54:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:54:45,775 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 11:54:45,807 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 11:54:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:45,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 11:54:45,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:54:46,719 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 15 treesize of output 11 [2022-01-18 11:54:48,100 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 11:54:48,230 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 11:54:48,343 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 11:54:48,534 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 11:54:48,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:54:50,457 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 11:54:50,457 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 50 [2022-01-18 11:54:50,468 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:54:50,468 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 398 treesize of output 373 [2022-01-18 11:54:50,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 11:54:50,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 135 [2022-01-18 11:54:50,485 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 11:54:50,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 318 treesize of output 222 [2022-01-18 11:54:50,494 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 11:54:50,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 222 treesize of output 198 [2022-01-18 11:54:51,214 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 11:54:51,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593455039] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:54:51,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:54:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 20] total 57 [2022-01-18 11:54:51,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32763728] [2022-01-18 11:54:51,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:54:51,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 11:54:51,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 11:54:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=2636, Unknown=63, NotChecked=0, Total=3192 [2022-01-18 11:54:51,217 INFO L87 Difference]: Start difference. First operand 19684 states and 83782 transitions. Second operand has 57 states, 57 states have (on average 9.280701754385966) internal successors, (529), 57 states have internal predecessors, (529), 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 11:54:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:54:56,136 INFO L93 Difference]: Finished difference Result 113288 states and 476539 transitions. [2022-01-18 11:54:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 11:54:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 9.280701754385966) internal successors, (529), 57 states have internal predecessors, (529), 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 203 [2022-01-18 11:54:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:54:57,111 INFO L225 Difference]: With dead ends: 113288 [2022-01-18 11:54:57,112 INFO L226 Difference]: Without dead ends: 111884 [2022-01-18 11:54:57,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2753 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1972, Invalid=8065, Unknown=63, NotChecked=0, Total=10100 [2022-01-18 11:54:57,114 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 5847 mSDsluCounter, 5711 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5847 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 780 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:54:57,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5847 Valid, 5413 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1466 Invalid, 0 Unknown, 780 Unchecked, 1.0s Time] [2022-01-18 11:54:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111884 states. [2022-01-18 11:54:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111884 to 29814. [2022-01-18 11:54:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29814 states, 29813 states have (on average 4.400496427732868) internal successors, (131192), 29813 states have internal predecessors, (131192), 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 11:54:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29814 states to 29814 states and 131192 transitions. [2022-01-18 11:54:59,067 INFO L78 Accepts]: Start accepts. Automaton has 29814 states and 131192 transitions. Word has length 203 [2022-01-18 11:54:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:54:59,068 INFO L470 AbstractCegarLoop]: Abstraction has 29814 states and 131192 transitions. [2022-01-18 11:54:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 9.280701754385966) internal successors, (529), 57 states have internal predecessors, (529), 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 11:54:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 29814 states and 131192 transitions. [2022-01-18 11:54:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-18 11:54:59,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:54:59,609 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:54:59,627 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 11:54:59,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:54:59,816 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:54:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:54:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 135101103, now seen corresponding path program 1 times [2022-01-18 11:54:59,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:54:59,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097198043] [2022-01-18 11:54:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:54:59,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:54:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:54:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 11:54:59,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:54:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097198043] [2022-01-18 11:54:59,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097198043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:54:59,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:54:59,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:54:59,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565710363] [2022-01-18 11:54:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:54:59,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:54:59,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:54:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:54:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:54:59,916 INFO L87 Difference]: Start difference. First operand 29814 states and 131192 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 11:55:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:00,359 INFO L93 Difference]: Finished difference Result 44065 states and 190012 transitions. [2022-01-18 11:55:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:55:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 204 [2022-01-18 11:55:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:00,666 INFO L225 Difference]: With dead ends: 44065 [2022-01-18 11:55:00,666 INFO L226 Difference]: Without dead ends: 42145 [2022-01-18 11:55:00,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:00,668 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 51 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:00,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 354 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:55:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42145 states. [2022-01-18 11:55:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42145 to 37420. [2022-01-18 11:55:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37420 states, 37419 states have (on average 4.362596541863759) internal successors, (163244), 37419 states have internal predecessors, (163244), 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 11:55:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37420 states to 37420 states and 163244 transitions. [2022-01-18 11:55:02,114 INFO L78 Accepts]: Start accepts. Automaton has 37420 states and 163244 transitions. Word has length 204 [2022-01-18 11:55:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:02,115 INFO L470 AbstractCegarLoop]: Abstraction has 37420 states and 163244 transitions. [2022-01-18 11:55:02,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 11:55:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37420 states and 163244 transitions. [2022-01-18 11:55:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-18 11:55:02,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:02,210 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] [2022-01-18 11:55:02,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 11:55:02,210 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:02,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1454274442, now seen corresponding path program 1 times [2022-01-18 11:55:02,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636842920] [2022-01-18 11:55:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:02,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 11:55:02,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:02,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636842920] [2022-01-18 11:55:02,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636842920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:02,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:55:02,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:55:02,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041430998] [2022-01-18 11:55:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:02,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:55:02,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:55:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:02,273 INFO L87 Difference]: Start difference. First operand 37420 states and 163244 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 11:55:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:02,913 INFO L93 Difference]: Finished difference Result 33559 states and 143220 transitions. [2022-01-18 11:55:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:55:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2022-01-18 11:55:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:03,073 INFO L225 Difference]: With dead ends: 33559 [2022-01-18 11:55:03,073 INFO L226 Difference]: Without dead ends: 32493 [2022-01-18 11:55:03,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:03,074 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 57 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:03,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 291 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:55:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32493 states. [2022-01-18 11:55:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32493 to 25012. [2022-01-18 11:55:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25012 states, 25011 states have (on average 4.363000279876855) internal successors, (109123), 25011 states have internal predecessors, (109123), 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 11:55:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25012 states to 25012 states and 109123 transitions. [2022-01-18 11:55:03,706 INFO L78 Accepts]: Start accepts. Automaton has 25012 states and 109123 transitions. Word has length 204 [2022-01-18 11:55:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:03,706 INFO L470 AbstractCegarLoop]: Abstraction has 25012 states and 109123 transitions. [2022-01-18 11:55:03,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 11:55:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 25012 states and 109123 transitions. [2022-01-18 11:55:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-18 11:55:03,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:03,768 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:03,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 11:55:03,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2132101305, now seen corresponding path program 2 times [2022-01-18 11:55:03,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:03,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792109770] [2022-01-18 11:55:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:03,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 11:55:04,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:04,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792109770] [2022-01-18 11:55:04,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792109770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:04,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:55:04,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:55:04,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014736895] [2022-01-18 11:55:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:04,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:55:04,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:55:04,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:04,101 INFO L87 Difference]: Start difference. First operand 25012 states and 109123 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 11:55:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:04,337 INFO L93 Difference]: Finished difference Result 30692 states and 131124 transitions. [2022-01-18 11:55:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:55:04,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2022-01-18 11:55:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:04,437 INFO L225 Difference]: With dead ends: 30692 [2022-01-18 11:55:04,437 INFO L226 Difference]: Without dead ends: 30692 [2022-01-18 11:55:04,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:04,438 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 48 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:04,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 470 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:55:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30692 states. [2022-01-18 11:55:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30692 to 26183. [2022-01-18 11:55:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26183 states, 26182 states have (on average 4.3358414177679325) internal successors, (113521), 26182 states have internal predecessors, (113521), 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 11:55:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26183 states to 26183 states and 113521 transitions. [2022-01-18 11:55:05,352 INFO L78 Accepts]: Start accepts. Automaton has 26183 states and 113521 transitions. Word has length 207 [2022-01-18 11:55:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:05,352 INFO L470 AbstractCegarLoop]: Abstraction has 26183 states and 113521 transitions. [2022-01-18 11:55:05,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 11:55:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26183 states and 113521 transitions. [2022-01-18 11:55:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-18 11:55:05,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:05,418 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:05,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 11:55:05,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1485031249, now seen corresponding path program 1 times [2022-01-18 11:55:05,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:05,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607214901] [2022-01-18 11:55:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:05,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:05,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:05,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607214901] [2022-01-18 11:55:05,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607214901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:05,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:55:05,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:55:05,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889296081] [2022-01-18 11:55:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:05,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:55:05,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:55:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:05,467 INFO L87 Difference]: Start difference. First operand 26183 states and 113521 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:05,746 INFO L93 Difference]: Finished difference Result 34566 states and 147995 transitions. [2022-01-18 11:55:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:55:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2022-01-18 11:55:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:05,877 INFO L225 Difference]: With dead ends: 34566 [2022-01-18 11:55:05,877 INFO L226 Difference]: Without dead ends: 34566 [2022-01-18 11:55:05,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:55:05,878 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 49 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:05,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 461 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:55:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34566 states. [2022-01-18 11:55:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34566 to 29337. [2022-01-18 11:55:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29337 states, 29336 states have (on average 4.347286610308154) internal successors, (127532), 29336 states have internal predecessors, (127532), 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 11:55:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29337 states to 29337 states and 127532 transitions. [2022-01-18 11:55:06,939 INFO L78 Accepts]: Start accepts. Automaton has 29337 states and 127532 transitions. Word has length 212 [2022-01-18 11:55:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 29337 states and 127532 transitions. [2022-01-18 11:55:06,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 29337 states and 127532 transitions. [2022-01-18 11:55:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-18 11:55:06,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:06,998 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:55:06,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 11:55:06,998 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash -430633187, now seen corresponding path program 1 times [2022-01-18 11:55:06,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:06,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141730160] [2022-01-18 11:55:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:06,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:07,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141730160] [2022-01-18 11:55:07,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141730160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:07,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:55:07,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:55:07,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124348238] [2022-01-18 11:55:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:07,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:55:07,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:55:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:55:07,078 INFO L87 Difference]: Start difference. First operand 29337 states and 127532 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:07,372 INFO L93 Difference]: Finished difference Result 32966 states and 140236 transitions. [2022-01-18 11:55:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:55:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2022-01-18 11:55:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:07,477 INFO L225 Difference]: With dead ends: 32966 [2022-01-18 11:55:07,477 INFO L226 Difference]: Without dead ends: 29343 [2022-01-18 11:55:07,477 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 11:55:07,477 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 438 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:07,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 746 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:55:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29343 states. [2022-01-18 11:55:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29343 to 29338. [2022-01-18 11:55:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29338 states, 29337 states have (on average 4.347172512526844) internal successors, (127533), 29337 states have internal predecessors, (127533), 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 11:55:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29338 states to 29338 states and 127533 transitions. [2022-01-18 11:55:08,467 INFO L78 Accepts]: Start accepts. Automaton has 29338 states and 127533 transitions. Word has length 212 [2022-01-18 11:55:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:08,468 INFO L470 AbstractCegarLoop]: Abstraction has 29338 states and 127533 transitions. [2022-01-18 11:55:08,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:55:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 29338 states and 127533 transitions. [2022-01-18 11:55:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-18 11:55:08,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:08,525 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 11:55:08,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 11:55:08,526 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2005935847, now seen corresponding path program 1 times [2022-01-18 11:55:08,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:08,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034145439] [2022-01-18 11:55:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:08,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 11:55:09,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034145439] [2022-01-18 11:55:09,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034145439] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720827025] [2022-01-18 11:55:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:09,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:09,088 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 11:55:09,089 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 11:55:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:09,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 11:55:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:10,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:10,857 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:55:10,858 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 19 treesize of output 11 [2022-01-18 11:55:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:11,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720827025] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:11,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:11,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 13] total 40 [2022-01-18 11:55:11,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087837497] [2022-01-18 11:55:11,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:11,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 11:55:11,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 11:55:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 11:55:11,702 INFO L87 Difference]: Start difference. First operand 29338 states and 127533 transitions. Second operand has 40 states, 40 states have (on average 10.175) internal successors, (407), 40 states have internal predecessors, (407), 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 11:55:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:16,016 INFO L93 Difference]: Finished difference Result 229702 states and 989038 transitions. [2022-01-18 11:55:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 11:55:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 10.175) internal successors, (407), 40 states have internal predecessors, (407), 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 219 [2022-01-18 11:55:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:17,402 INFO L225 Difference]: With dead ends: 229702 [2022-01-18 11:55:17,402 INFO L226 Difference]: Without dead ends: 226512 [2022-01-18 11:55:17,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 412 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1118, Invalid=5202, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 11:55:17,404 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 3420 mSDsluCounter, 5762 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:17,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3420 Valid, 5746 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 11:55:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226512 states. [2022-01-18 11:55:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226512 to 80495. [2022-01-18 11:55:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80495 states, 80494 states have (on average 4.56929709046637) internal successors, (367801), 80494 states have internal predecessors, (367801), 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 11:55:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80495 states to 80495 states and 367801 transitions. [2022-01-18 11:55:23,035 INFO L78 Accepts]: Start accepts. Automaton has 80495 states and 367801 transitions. Word has length 219 [2022-01-18 11:55:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:23,035 INFO L470 AbstractCegarLoop]: Abstraction has 80495 states and 367801 transitions. [2022-01-18 11:55:23,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.175) internal successors, (407), 40 states have internal predecessors, (407), 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 11:55:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 80495 states and 367801 transitions. [2022-01-18 11:55:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-18 11:55:23,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:23,361 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 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 11:55:23,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 11:55:23,575 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,SelfDestructingSolverStorable13 [2022-01-18 11:55:23,576 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1969667416, now seen corresponding path program 1 times [2022-01-18 11:55:23,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:23,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486757618] [2022-01-18 11:55:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:23,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 11:55:23,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486757618] [2022-01-18 11:55:23,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486757618] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:23,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759296942] [2022-01-18 11:55:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:23,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:23,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:23,653 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 11:55:23,686 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 11:55:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:23,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 11:55:23,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:24,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:55:25,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759296942] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:25,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:25,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2022-01-18 11:55:25,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820508856] [2022-01-18 11:55:25,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:25,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 11:55:25,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 11:55:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-01-18 11:55:25,611 INFO L87 Difference]: Start difference. First operand 80495 states and 367801 transitions. Second operand has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 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 11:55:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:29,020 INFO L93 Difference]: Finished difference Result 251581 states and 1137534 transitions. [2022-01-18 11:55:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 11:55:29,021 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 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 221 [2022-01-18 11:55:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:31,379 INFO L225 Difference]: With dead ends: 251581 [2022-01-18 11:55:31,380 INFO L226 Difference]: Without dead ends: 241317 [2022-01-18 11:55:31,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 11:55:31,381 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1666 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:31,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 2633 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 11:55:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241317 states. [2022-01-18 11:55:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241317 to 210026. [2022-01-18 11:55:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210026 states, 210025 states have (on average 4.619726223068683) internal successors, (970258), 210025 states have internal predecessors, (970258), 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 11:55:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210026 states to 210026 states and 970258 transitions. [2022-01-18 11:55:40,571 INFO L78 Accepts]: Start accepts. Automaton has 210026 states and 970258 transitions. Word has length 221 [2022-01-18 11:55:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:40,571 INFO L470 AbstractCegarLoop]: Abstraction has 210026 states and 970258 transitions. [2022-01-18 11:55:40,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 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 11:55:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 210026 states and 970258 transitions. [2022-01-18 11:55:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-18 11:55:41,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:41,720 INFO L514 BasicCegarLoop]: trace histogram [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, 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 11:55:41,751 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 11:55:41,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:41,946 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1645767732, now seen corresponding path program 2 times [2022-01-18 11:55:41,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:41,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519254060] [2022-01-18 11:55:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:41,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 11:55:41,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:41,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519254060] [2022-01-18 11:55:41,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519254060] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:41,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747288035] [2022-01-18 11:55:41,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:55:41,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:41,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:41,998 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 11:55:41,999 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 11:55:42,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:55:42,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:55:42,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 11:55:42,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 11:55:42,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 11:55:42,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747288035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:55:42,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 11:55:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-01-18 11:55:42,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958469109] [2022-01-18 11:55:42,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:55:42,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:55:42,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:55:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:55:42,407 INFO L87 Difference]: Start difference. First operand 210026 states and 970258 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 11:55:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:55:44,937 INFO L93 Difference]: Finished difference Result 238189 states and 1065423 transitions. [2022-01-18 11:55:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:55:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 223 [2022-01-18 11:55:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:55:47,427 INFO L225 Difference]: With dead ends: 238189 [2022-01-18 11:55:47,427 INFO L226 Difference]: Without dead ends: 238189 [2022-01-18 11:55:47,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 11:55:47,428 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 55 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:55:47,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 477 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:55:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238189 states. [2022-01-18 11:55:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238189 to 209694. [2022-01-18 11:55:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209694 states, 209693 states have (on average 4.526269355677109) internal successors, (949127), 209693 states have internal predecessors, (949127), 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 11:55:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209694 states to 209694 states and 949127 transitions. [2022-01-18 11:55:56,770 INFO L78 Accepts]: Start accepts. Automaton has 209694 states and 949127 transitions. Word has length 223 [2022-01-18 11:55:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:55:56,770 INFO L470 AbstractCegarLoop]: Abstraction has 209694 states and 949127 transitions. [2022-01-18 11:55:56,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 11:55:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 209694 states and 949127 transitions. [2022-01-18 11:55:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-18 11:55:57,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:55:57,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 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 11:55:57,232 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 11:55:57,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 11:55:57,416 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:55:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:55:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 505595805, now seen corresponding path program 1 times [2022-01-18 11:55:57,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:55:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140687130] [2022-01-18 11:55:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:57,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:55:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 11:55:57,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:55:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140687130] [2022-01-18 11:55:57,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140687130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:55:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833456001] [2022-01-18 11:55:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:55:57,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:55:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:55:57,510 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 11:55:57,511 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 11:55:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:55:57,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 11:55:57,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:55:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 11:55:58,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:55:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 11:55:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833456001] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:55:59,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:55:59,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 11:55:59,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15502845] [2022-01-18 11:55:59,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:55:59,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 11:55:59,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:55:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 11:55:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-18 11:55:59,158 INFO L87 Difference]: Start difference. First operand 209694 states and 949127 transitions. Second operand has 19 states, 19 states have (on average 16.473684210526315) internal successors, (313), 19 states have internal predecessors, (313), 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 11:56:02,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:56:02,369 INFO L93 Difference]: Finished difference Result 210798 states and 952371 transitions. [2022-01-18 11:56:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 11:56:02,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.473684210526315) internal successors, (313), 19 states have internal predecessors, (313), 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 228 [2022-01-18 11:56:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:56:04,947 INFO L225 Difference]: With dead ends: 210798 [2022-01-18 11:56:04,947 INFO L226 Difference]: Without dead ends: 207167 [2022-01-18 11:56:04,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2022-01-18 11:56:04,948 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 880 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 11:56:04,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 2065 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 11:56:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207167 states. [2022-01-18 11:56:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207167 to 207162. [2022-01-18 11:56:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207162 states, 207161 states have (on average 4.538194930512983) internal successors, (940137), 207161 states have internal predecessors, (940137), 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 11:56:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207162 states to 207162 states and 940137 transitions. [2022-01-18 11:56:14,434 INFO L78 Accepts]: Start accepts. Automaton has 207162 states and 940137 transitions. Word has length 228 [2022-01-18 11:56:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:56:14,434 INFO L470 AbstractCegarLoop]: Abstraction has 207162 states and 940137 transitions. [2022-01-18 11:56:14,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.473684210526315) internal successors, (313), 19 states have internal predecessors, (313), 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 11:56:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 207162 states and 940137 transitions. [2022-01-18 11:56:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-18 11:56:14,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:56:14,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:56:14,962 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 11:56:15,146 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,SelfDestructingSolverStorable16 [2022-01-18 11:56:15,146 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:56:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:56:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1631137604, now seen corresponding path program 2 times [2022-01-18 11:56:15,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:56:15,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359876772] [2022-01-18 11:56:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:56:15,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:56:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:56:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 11:56:15,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:56:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359876772] [2022-01-18 11:56:15,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359876772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:56:15,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:56:15,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:56:15,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563456551] [2022-01-18 11:56:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:56:15,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:56:15,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:56:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:56:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:56:15,197 INFO L87 Difference]: Start difference. First operand 207162 states and 940137 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 11:56:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:56:17,446 INFO L93 Difference]: Finished difference Result 197654 states and 843805 transitions. [2022-01-18 11:56:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:56:17,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 232 [2022-01-18 11:56:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:56:19,265 INFO L225 Difference]: With dead ends: 197654 [2022-01-18 11:56:19,266 INFO L226 Difference]: Without dead ends: 194280 [2022-01-18 11:56:19,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:56:19,266 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 54 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:56:19,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 457 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:56:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194280 states. [2022-01-18 11:56:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194280 to 150196. [2022-01-18 11:56:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150196 states, 150195 states have (on average 4.303079330204068) internal successors, (646301), 150195 states have internal predecessors, (646301), 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 11:56:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150196 states to 150196 states and 646301 transitions. [2022-01-18 11:56:25,872 INFO L78 Accepts]: Start accepts. Automaton has 150196 states and 646301 transitions. Word has length 232 [2022-01-18 11:56:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:56:25,873 INFO L470 AbstractCegarLoop]: Abstraction has 150196 states and 646301 transitions. [2022-01-18 11:56:25,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 11:56:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 150196 states and 646301 transitions. [2022-01-18 11:56:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-18 11:56:26,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:56:26,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 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 11:56:26,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 11:56:26,117 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:56:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:56:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash -918810044, now seen corresponding path program 2 times [2022-01-18 11:56:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:56:26,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404204835] [2022-01-18 11:56:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:56:26,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:56:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:56:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 11:56:26,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:56:26,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404204835] [2022-01-18 11:56:26,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404204835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:56:26,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804816259] [2022-01-18 11:56:26,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:56:26,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:56:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:56:26,209 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 11:56:26,210 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 11:56:26,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:56:26,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:56:26,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 11:56:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:56:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 11:56:26,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:56:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 11:56:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804816259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:56:27,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:56:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-01-18 11:56:27,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380820589] [2022-01-18 11:56:27,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:56:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 11:56:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:56:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 11:56:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-18 11:56:27,756 INFO L87 Difference]: Start difference. First operand 150196 states and 646301 transitions. Second operand has 22 states, 22 states have (on average 18.681818181818183) internal successors, (411), 22 states have internal predecessors, (411), 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 11:56:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:56:29,934 INFO L93 Difference]: Finished difference Result 191909 states and 793725 transitions. [2022-01-18 11:56:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 11:56:29,935 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 18.681818181818183) internal successors, (411), 22 states have internal predecessors, (411), 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 235 [2022-01-18 11:56:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:56:31,490 INFO L225 Difference]: With dead ends: 191909 [2022-01-18 11:56:31,490 INFO L226 Difference]: Without dead ends: 170239 [2022-01-18 11:56:31,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 11:56:31,492 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1578 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 11:56:31,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 2044 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 11:56:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170239 states. [2022-01-18 11:56:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170239 to 124168. [2022-01-18 11:56:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124168 states, 124167 states have (on average 4.262670435784065) internal successors, (529283), 124167 states have internal predecessors, (529283), 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 11:56:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124168 states to 124168 states and 529283 transitions. [2022-01-18 11:56:36,644 INFO L78 Accepts]: Start accepts. Automaton has 124168 states and 529283 transitions. Word has length 235 [2022-01-18 11:56:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:56:36,659 INFO L470 AbstractCegarLoop]: Abstraction has 124168 states and 529283 transitions. [2022-01-18 11:56:36,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.681818181818183) internal successors, (411), 22 states have internal predecessors, (411), 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 11:56:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 124168 states and 529283 transitions. [2022-01-18 11:56:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-18 11:56:36,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:56:36,761 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 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 11:56:36,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 11:56:36,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:56:36,992 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:56:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:56:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash -315004841, now seen corresponding path program 1 times [2022-01-18 11:56:36,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:56:36,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851423293] [2022-01-18 11:56:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:56:36,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:56:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:56:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:56:37,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:56:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851423293] [2022-01-18 11:56:37,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851423293] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:56:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933827738] [2022-01-18 11:56:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:56:37,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:56:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:56:37,577 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 11:56:37,578 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 11:56:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:56:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 11:56:37,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:56:38,973 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 11:56:38,973 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 48 treesize of output 20 [2022-01-18 11:56:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:56:39,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:56:39,133 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:56:39,134 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 19 treesize of output 11 [2022-01-18 11:56:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 11:56:41,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933827738] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:56:41,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:56:41,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 46 [2022-01-18 11:56:41,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477245118] [2022-01-18 11:56:41,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:56:41,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 11:56:41,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:56:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 11:56:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1813, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 11:56:41,824 INFO L87 Difference]: Start difference. First operand 124168 states and 529283 transitions. Second operand has 46 states, 46 states have (on average 12.869565217391305) internal successors, (592), 46 states have internal predecessors, (592), 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 11:56:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:56:48,191 INFO L93 Difference]: Finished difference Result 351219 states and 1467567 transitions. [2022-01-18 11:56:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 11:56:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 12.869565217391305) internal successors, (592), 46 states have internal predecessors, (592), 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 237 [2022-01-18 11:56:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:56:51,165 INFO L225 Difference]: With dead ends: 351219 [2022-01-18 11:56:51,165 INFO L226 Difference]: Without dead ends: 337662 [2022-01-18 11:56:51,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 445 SyntacticMatches, 5 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1354, Invalid=8152, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 11:56:51,167 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 3377 mSDsluCounter, 7872 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 7731 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 11:56:51,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 7731 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1761 Invalid, 0 Unknown, 30 Unchecked, 0.9s Time] [2022-01-18 11:56:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337662 states. [2022-01-18 11:56:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337662 to 202420. [2022-01-18 11:56:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202420 states, 202419 states have (on average 4.321254427697005) internal successors, (874704), 202419 states have internal predecessors, (874704), 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 11:57:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202420 states to 202420 states and 874704 transitions. [2022-01-18 11:57:01,036 INFO L78 Accepts]: Start accepts. Automaton has 202420 states and 874704 transitions. Word has length 237 [2022-01-18 11:57:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:57:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 202420 states and 874704 transitions. [2022-01-18 11:57:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 12.869565217391305) internal successors, (592), 46 states have internal predecessors, (592), 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 11:57:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 202420 states and 874704 transitions. [2022-01-18 11:57:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-18 11:57:01,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:57:01,103 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:01,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 11:57:01,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:57:01,304 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:57:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:57:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1118495046, now seen corresponding path program 1 times [2022-01-18 11:57:01,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:57:01,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136338585] [2022-01-18 11:57:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:57:01,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:57:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:57:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:01,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:57:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136338585] [2022-01-18 11:57:01,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136338585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:57:01,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:57:01,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:57:01,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349015907] [2022-01-18 11:57:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:57:01,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:57:01,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:57:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:57:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:57:01,402 INFO L87 Difference]: Start difference. First operand 202420 states and 874704 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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 11:57:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:57:05,239 INFO L93 Difference]: Finished difference Result 220830 states and 937536 transitions. [2022-01-18 11:57:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 11:57:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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 249 [2022-01-18 11:57:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:57:07,803 INFO L225 Difference]: With dead ends: 220830 [2022-01-18 11:57:07,804 INFO L226 Difference]: Without dead ends: 211560 [2022-01-18 11:57:07,804 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 11:57:07,805 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 218 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:57:07,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 740 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:57:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211560 states. [2022-01-18 11:57:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211560 to 204316. [2022-01-18 11:57:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204316 states, 204315 states have (on average 4.310980593691114) internal successors, (880798), 204315 states have internal predecessors, (880798), 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 11:57:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204316 states to 204316 states and 880798 transitions. [2022-01-18 11:57:16,739 INFO L78 Accepts]: Start accepts. Automaton has 204316 states and 880798 transitions. Word has length 249 [2022-01-18 11:57:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:57:16,739 INFO L470 AbstractCegarLoop]: Abstraction has 204316 states and 880798 transitions. [2022-01-18 11:57:16,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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 11:57:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 204316 states and 880798 transitions. [2022-01-18 11:57:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-18 11:57:16,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:57:16,807 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 11:57:16,807 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:57:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:57:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1301128136, now seen corresponding path program 2 times [2022-01-18 11:57:16,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:57:16,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835809916] [2022-01-18 11:57:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:57:16,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:57:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:57:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 11:57:16,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:57:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835809916] [2022-01-18 11:57:16,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835809916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:57:16,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:57:16,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 11:57:16,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295768796] [2022-01-18 11:57:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:57:16,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 11:57:16,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:57:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 11:57:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:57:16,853 INFO L87 Difference]: Start difference. First operand 204316 states and 880798 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 11:57:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:57:19,123 INFO L93 Difference]: Finished difference Result 208802 states and 864973 transitions. [2022-01-18 11:57:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 11:57:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 253 [2022-01-18 11:57:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:57:20,932 INFO L225 Difference]: With dead ends: 208802 [2022-01-18 11:57:20,932 INFO L226 Difference]: Without dead ends: 202404 [2022-01-18 11:57:20,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 11:57:20,933 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 47 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:57:20,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 476 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:57:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202404 states. [2022-01-18 11:57:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202404 to 173601. [2022-01-18 11:57:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173601 states, 173600 states have (on average 4.170944700460829) internal successors, (724076), 173600 states have internal predecessors, (724076), 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 11:57:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173601 states to 173601 states and 724076 transitions. [2022-01-18 11:57:27,920 INFO L78 Accepts]: Start accepts. Automaton has 173601 states and 724076 transitions. Word has length 253 [2022-01-18 11:57:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:57:27,921 INFO L470 AbstractCegarLoop]: Abstraction has 173601 states and 724076 transitions. [2022-01-18 11:57:27,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 11:57:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 173601 states and 724076 transitions. [2022-01-18 11:57:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-18 11:57:28,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:57:28,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:28,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 11:57:28,001 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:57:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:57:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 755913321, now seen corresponding path program 1 times [2022-01-18 11:57:28,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:57:28,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306268803] [2022-01-18 11:57:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:57:28,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:57:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:57:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:28,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:57:28,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306268803] [2022-01-18 11:57:28,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306268803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:57:28,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406116599] [2022-01-18 11:57:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:57:28,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:57:28,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:57:28,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:57:28,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 11:57:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:57:28,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 11:57:28,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:57:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:28,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:57:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:29,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406116599] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:57:29,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:57:29,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 11:57:29,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050204354] [2022-01-18 11:57:29,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:57:29,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 11:57:29,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:57:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 11:57:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-18 11:57:29,273 INFO L87 Difference]: Start difference. First operand 173601 states and 724076 transitions. Second operand has 19 states, 19 states have (on average 15.421052631578947) internal successors, (293), 19 states have internal predecessors, (293), 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 11:57:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:57:31,342 INFO L93 Difference]: Finished difference Result 185727 states and 764388 transitions. [2022-01-18 11:57:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 11:57:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.421052631578947) internal successors, (293), 19 states have internal predecessors, (293), 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 256 [2022-01-18 11:57:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:57:32,238 INFO L225 Difference]: With dead ends: 185727 [2022-01-18 11:57:32,238 INFO L226 Difference]: Without dead ends: 173625 [2022-01-18 11:57:32,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2022-01-18 11:57:32,239 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 916 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 11:57:32,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 2256 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 11:57:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173625 states. [2022-01-18 11:57:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173625 to 173615. [2022-01-18 11:57:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173615 states, 173614 states have (on average 4.170688999735044) internal successors, (724090), 173614 states have internal predecessors, (724090), 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 11:57:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173615 states to 173615 states and 724090 transitions. [2022-01-18 11:57:38,844 INFO L78 Accepts]: Start accepts. Automaton has 173615 states and 724090 transitions. Word has length 256 [2022-01-18 11:57:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:57:38,845 INFO L470 AbstractCegarLoop]: Abstraction has 173615 states and 724090 transitions. [2022-01-18 11:57:38,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.421052631578947) internal successors, (293), 19 states have internal predecessors, (293), 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 11:57:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 173615 states and 724090 transitions. [2022-01-18 11:57:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-18 11:57:38,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:57:38,891 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:38,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 11:57:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 11:57:39,092 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:57:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:57:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -169679898, now seen corresponding path program 2 times [2022-01-18 11:57:39,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:57:39,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521612117] [2022-01-18 11:57:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:57:39,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:57:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:57:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-18 11:57:39,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:57:39,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521612117] [2022-01-18 11:57:39,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521612117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:57:39,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146699621] [2022-01-18 11:57:39,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:57:39,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:57:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:57:39,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:57:39,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 11:57:40,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:57:40,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:57:40,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 11:57:40,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:57:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:41,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:57:41,767 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:57:41,768 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 19 treesize of output 11 [2022-01-18 11:57:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-18 11:57:42,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146699621] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:57:42,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:57:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 43 [2022-01-18 11:57:42,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584898638] [2022-01-18 11:57:42,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:57:42,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 11:57:42,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:57:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 11:57:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1567, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 11:57:42,966 INFO L87 Difference]: Start difference. First operand 173615 states and 724090 transitions. Second operand has 43 states, 43 states have (on average 13.13953488372093) internal successors, (565), 43 states have internal predecessors, (565), 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 11:57:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:57:48,430 INFO L93 Difference]: Finished difference Result 349718 states and 1443370 transitions. [2022-01-18 11:57:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 11:57:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 13.13953488372093) internal successors, (565), 43 states have internal predecessors, (565), 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 263 [2022-01-18 11:57:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:57:51,413 INFO L225 Difference]: With dead ends: 349718 [2022-01-18 11:57:51,413 INFO L226 Difference]: Without dead ends: 336376 [2022-01-18 11:57:51,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1223, Invalid=5097, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 11:57:51,415 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 3042 mSDsluCounter, 5332 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 5327 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 11:57:51,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 5327 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 11:57:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336376 states. [2022-01-18 11:57:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336376 to 178711. [2022-01-18 11:57:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178711 states, 178710 states have (on average 4.152946113815679) internal successors, (742173), 178710 states have internal predecessors, (742173), 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 11:58:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178711 states to 178711 states and 742173 transitions. [2022-01-18 11:58:00,574 INFO L78 Accepts]: Start accepts. Automaton has 178711 states and 742173 transitions. Word has length 263 [2022-01-18 11:58:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:58:00,574 INFO L470 AbstractCegarLoop]: Abstraction has 178711 states and 742173 transitions. [2022-01-18 11:58:00,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 13.13953488372093) internal successors, (565), 43 states have internal predecessors, (565), 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 11:58:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 178711 states and 742173 transitions. [2022-01-18 11:58:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-18 11:58:00,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:00,655 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:00,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 11:58:00,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 11:58:00,864 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:58:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1203948011, now seen corresponding path program 3 times [2022-01-18 11:58:00,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:00,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70182630] [2022-01-18 11:58:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:00,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 74 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 11:58:01,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70182630] [2022-01-18 11:58:01,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70182630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:58:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816212893] [2022-01-18 11:58:01,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 11:58:01,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:58:01,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:58:01,569 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:58:01,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 11:58:01,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 11:58:01,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:58:01,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 11:58:01,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:58:02,716 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 11:58:02,716 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 50 treesize of output 20 [2022-01-18 11:58:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 39 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 11:58:02,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:58:02,882 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:58:02,882 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 19 treesize of output 11 [2022-01-18 11:58:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 11:58:03,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816212893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:58:03,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:58:03,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 18] total 53 [2022-01-18 11:58:03,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543704899] [2022-01-18 11:58:03,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:58:03,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 11:58:03,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:58:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 11:58:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 11:58:03,697 INFO L87 Difference]: Start difference. First operand 178711 states and 742173 transitions. Second operand has 53 states, 53 states have (on average 10.924528301886792) internal successors, (579), 53 states have internal predecessors, (579), 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 11:58:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:58:17,628 INFO L93 Difference]: Finished difference Result 702839 states and 2848610 transitions. [2022-01-18 11:58:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 11:58:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 10.924528301886792) internal successors, (579), 53 states have internal predecessors, (579), 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 278 [2022-01-18 11:58:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:58:24,855 INFO L225 Difference]: With dead ends: 702839 [2022-01-18 11:58:24,855 INFO L226 Difference]: Without dead ends: 677387 [2022-01-18 11:58:24,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1939, Invalid=10943, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 11:58:24,858 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 3687 mSDsluCounter, 11938 mSDsCounter, 0 mSdLazyCounter, 2733 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 11577 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 11:58:24,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3687 Valid, 11577 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2733 Invalid, 0 Unknown, 303 Unchecked, 1.3s Time] [2022-01-18 11:58:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677387 states. [2022-01-18 11:58:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677387 to 432774. [2022-01-18 11:58:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432774 states, 432773 states have (on average 4.162916817823663) internal successors, (1801598), 432773 states have internal predecessors, (1801598), 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 11:58:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432774 states to 432774 states and 1801598 transitions. [2022-01-18 11:58:49,708 INFO L78 Accepts]: Start accepts. Automaton has 432774 states and 1801598 transitions. Word has length 278 [2022-01-18 11:58:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:58:49,709 INFO L470 AbstractCegarLoop]: Abstraction has 432774 states and 1801598 transitions. [2022-01-18 11:58:49,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 10.924528301886792) internal successors, (579), 53 states have internal predecessors, (579), 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 11:58:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 432774 states and 1801598 transitions. [2022-01-18 11:58:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-18 11:58:49,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:49,906 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:49,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 11:58:50,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 11:58:50,107 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:58:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -781162244, now seen corresponding path program 4 times [2022-01-18 11:58:50,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:50,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139991744] [2022-01-18 11:58:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:50,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 11:58:51,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139991744] [2022-01-18 11:58:51,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139991744] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:58:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449178761] [2022-01-18 11:58:51,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 11:58:51,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:58:51,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:58:51,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:58:51,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 11:58:51,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 11:58:51,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:58:51,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 11:58:51,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:58:52,491 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 11:58:52,491 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 48 treesize of output 20 [2022-01-18 11:58:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-18 11:58:52,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:58:52,656 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:58:52,656 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 19 treesize of output 11 [2022-01-18 11:58:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-18 11:58:53,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449178761] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:58:53,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:58:53,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15, 8] total 41 [2022-01-18 11:58:53,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717071176] [2022-01-18 11:58:53,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:58:53,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 11:58:53,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:58:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 11:58:53,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1506, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 11:58:53,657 INFO L87 Difference]: Start difference. First operand 432774 states and 1801598 transitions. Second operand has 41 states, 41 states have (on average 12.414634146341463) internal successors, (509), 41 states have internal predecessors, (509), 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 11:59:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:07,295 INFO L93 Difference]: Finished difference Result 734686 states and 2990963 transitions. [2022-01-18 11:59:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 11:59:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 12.414634146341463) internal successors, (509), 41 states have internal predecessors, (509), 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 285 [2022-01-18 11:59:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:13,475 INFO L225 Difference]: With dead ends: 734686 [2022-01-18 11:59:13,475 INFO L226 Difference]: Without dead ends: 719932 [2022-01-18 11:59:13,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4332 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1460, Invalid=13792, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 11:59:13,476 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 3485 mSDsluCounter, 10203 mSDsCounter, 0 mSdLazyCounter, 3173 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 9777 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:13,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3485 Valid, 9777 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3173 Invalid, 0 Unknown, 202 Unchecked, 1.3s Time] [2022-01-18 11:59:15,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719932 states. [2022-01-18 11:59:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719932 to 432185. [2022-01-18 11:59:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432185 states, 432184 states have (on average 4.178111637635822) internal successors, (1805713), 432184 states have internal predecessors, (1805713), 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 11:59:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432185 states to 432185 states and 1805713 transitions. [2022-01-18 11:59:41,174 INFO L78 Accepts]: Start accepts. Automaton has 432185 states and 1805713 transitions. Word has length 285 [2022-01-18 11:59:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:41,174 INFO L470 AbstractCegarLoop]: Abstraction has 432185 states and 1805713 transitions. [2022-01-18 11:59:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 12.414634146341463) internal successors, (509), 41 states have internal predecessors, (509), 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 11:59:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 432185 states and 1805713 transitions. [2022-01-18 11:59:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-18 11:59:41,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:41,455 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 11:59:41,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 11:59:41,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 11:59:41,681 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:59:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash -280151965, now seen corresponding path program 5 times [2022-01-18 11:59:41,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:41,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213398450] [2022-01-18 11:59:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:41,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-18 11:59:41,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:41,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213398450] [2022-01-18 11:59:41,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213398450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:41,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696590454] [2022-01-18 11:59:41,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 11:59:41,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:41,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:41,954 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:59:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 11:59:42,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 11:59:42,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:59:42,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 11:59:42,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-01-18 11:59:43,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-18 11:59:43,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696590454] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:43,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:43,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2022-01-18 11:59:43,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276641889] [2022-01-18 11:59:43,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:43,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 11:59:43,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 11:59:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 11:59:43,941 INFO L87 Difference]: Start difference. First operand 432185 states and 1805713 transitions. Second operand has 8 states, 8 states have (on average 49.375) internal successors, (395), 8 states have internal predecessors, (395), 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 11:59:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:44,254 INFO L93 Difference]: Finished difference Result 41321 states and 142732 transitions. [2022-01-18 11:59:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 11:59:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 49.375) internal successors, (395), 8 states have internal predecessors, (395), 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 286 [2022-01-18 11:59:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:44,345 INFO L225 Difference]: With dead ends: 41321 [2022-01-18 11:59:44,345 INFO L226 Difference]: Without dead ends: 24807 [2022-01-18 11:59:44,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-18 11:59:44,348 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 654 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:44,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 458 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:59:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24807 states. [2022-01-18 11:59:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24807 to 14385. [2022-01-18 11:59:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14385 states, 14384 states have (on average 3.3701334816462736) internal successors, (48476), 14384 states have internal predecessors, (48476), 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 11:59:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14385 states to 14385 states and 48476 transitions. [2022-01-18 11:59:45,174 INFO L78 Accepts]: Start accepts. Automaton has 14385 states and 48476 transitions. Word has length 286 [2022-01-18 11:59:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:45,175 INFO L470 AbstractCegarLoop]: Abstraction has 14385 states and 48476 transitions. [2022-01-18 11:59:45,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.375) internal successors, (395), 8 states have internal predecessors, (395), 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 11:59:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 14385 states and 48476 transitions. [2022-01-18 11:59:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-18 11:59:45,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:45,205 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:45,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 11:59:45,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 11:59:45,428 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:59:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -138324772, now seen corresponding path program 6 times [2022-01-18 11:59:45,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:45,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623956315] [2022-01-18 11:59:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:45,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 3 proven. 75 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-18 11:59:46,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623956315] [2022-01-18 11:59:46,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623956315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028325553] [2022-01-18 11:59:46,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 11:59:46,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:46,209 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:59:46,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 11:59:46,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 11:59:46,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:59:46,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 11:59:46,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:47,256 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 11:59:47,257 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 48 treesize of output 20 [2022-01-18 11:59:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-18 11:59:47,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:47,399 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:59:47,400 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 19 treesize of output 11 [2022-01-18 11:59:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-18 11:59:48,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028325553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:48,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:48,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8, 8] total 28 [2022-01-18 11:59:48,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247453217] [2022-01-18 11:59:48,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:48,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 11:59:48,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 11:59:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-01-18 11:59:48,026 INFO L87 Difference]: Start difference. First operand 14385 states and 48476 transitions. Second operand has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 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 11:59:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:50,013 INFO L93 Difference]: Finished difference Result 39238 states and 130680 transitions. [2022-01-18 11:59:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 11:59:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 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 294 [2022-01-18 11:59:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:50,067 INFO L225 Difference]: With dead ends: 39238 [2022-01-18 11:59:50,067 INFO L226 Difference]: Without dead ends: 18722 [2022-01-18 11:59:50,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 582 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=573, Invalid=3459, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 11:59:50,068 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1307 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 6526 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:50,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 6526 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 11:59:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18722 states. [2022-01-18 11:59:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18722 to 14669. [2022-01-18 11:59:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14669 states, 14668 states have (on average 3.3468093809653667) internal successors, (49091), 14668 states have internal predecessors, (49091), 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 11:59:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14669 states to 14669 states and 49091 transitions. [2022-01-18 11:59:50,733 INFO L78 Accepts]: Start accepts. Automaton has 14669 states and 49091 transitions. Word has length 294 [2022-01-18 11:59:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:50,734 INFO L470 AbstractCegarLoop]: Abstraction has 14669 states and 49091 transitions. [2022-01-18 11:59:50,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 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 11:59:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 14669 states and 49091 transitions. [2022-01-18 11:59:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-18 11:59:50,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:50,764 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:50,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 11:59:50,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 11:59:50,980 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:59:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash 133511001, now seen corresponding path program 7 times [2022-01-18 11:59:50,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:50,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148538971] [2022-01-18 11:59:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:50,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 119 proven. 61 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-18 11:59:51,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:51,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148538971] [2022-01-18 11:59:51,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148538971] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:51,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909713377] [2022-01-18 11:59:51,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 11:59:51,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:51,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:59:51,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 11:59:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:51,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 11:59:51,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 156 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-18 11:59:52,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 69 proven. 111 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-18 11:59:53,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909713377] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:53,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:53,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 11:59:53,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088703599] [2022-01-18 11:59:53,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:53,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 11:59:53,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 11:59:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 11:59:53,321 INFO L87 Difference]: Start difference. First operand 14669 states and 49091 transitions. Second operand has 37 states, 37 states have (on average 12.64864864864865) internal successors, (468), 37 states have internal predecessors, (468), 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 11:59:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:54,089 INFO L93 Difference]: Finished difference Result 26005 states and 86603 transitions. [2022-01-18 11:59:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 11:59:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 12.64864864864865) internal successors, (468), 37 states have internal predecessors, (468), 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 324 [2022-01-18 11:59:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:54,132 INFO L225 Difference]: With dead ends: 26005 [2022-01-18 11:59:54,132 INFO L226 Difference]: Without dead ends: 14681 [2022-01-18 11:59:54,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=2768, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 11:59:54,138 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1054 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:54,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 3921 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 11:59:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14681 states. [2022-01-18 11:59:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14681 to 14676. [2022-01-18 11:59:54,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 14675 states have (on average 3.345689948892675) internal successors, (49098), 14675 states have internal predecessors, (49098), 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 11:59:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 49098 transitions. [2022-01-18 11:59:54,589 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 49098 transitions. Word has length 324 [2022-01-18 11:59:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:54,590 INFO L470 AbstractCegarLoop]: Abstraction has 14676 states and 49098 transitions. [2022-01-18 11:59:54,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 12.64864864864865) internal successors, (468), 37 states have internal predecessors, (468), 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 11:59:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 49098 transitions. [2022-01-18 11:59:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-01-18 11:59:54,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:54,620 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:54,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 11:59:54,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:54,832 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 11:59:54,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash -593924608, now seen corresponding path program 8 times [2022-01-18 11:59:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:54,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416659507] [2022-01-18 11:59:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:54,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 3 proven. 141 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-18 11:59:55,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:55,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416659507] [2022-01-18 11:59:55,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416659507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:55,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362832658] [2022-01-18 11:59:55,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:59:55,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:55,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:55,848 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 11:59:55,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 11:59:56,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:59:56,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:59:56,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 11:59:56,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:57,739 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 11:59:57,740 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 48 treesize of output 20 [2022-01-18 11:59:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-18 11:59:57,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:57,932 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 11:59:57,932 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 19 treesize of output 11 [2022-01-18 12:00:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-18 12:00:01,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362832658] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:01,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:01,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 19] total 54 [2022-01-18 12:00:01,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276231768] [2022-01-18 12:00:01,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:01,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-18 12:00:01,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-18 12:00:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2511, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 12:00:01,293 INFO L87 Difference]: Start difference. First operand 14676 states and 49098 transitions. Second operand has 54 states, 54 states have (on average 12.314814814814815) internal successors, (665), 54 states have internal predecessors, (665), 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 12:00:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:03,786 INFO L93 Difference]: Finished difference Result 32572 states and 108747 transitions. [2022-01-18 12:00:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:00:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 12.314814814814815) internal successors, (665), 54 states have internal predecessors, (665), 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 331 [2022-01-18 12:00:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:03,862 INFO L225 Difference]: With dead ends: 32572 [2022-01-18 12:00:03,862 INFO L226 Difference]: Without dead ends: 30858 [2022-01-18 12:00:03,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 631 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2268 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1594, Invalid=8108, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 12:00:03,863 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 2661 mSDsluCounter, 7361 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:03,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 7137 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1679 Invalid, 0 Unknown, 83 Unchecked, 0.7s Time] [2022-01-18 12:00:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30858 states. [2022-01-18 12:00:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30858 to 28117. [2022-01-18 12:00:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28117 states, 28116 states have (on average 3.3559183383127045) internal successors, (94355), 28116 states have internal predecessors, (94355), 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 12:00:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28117 states to 28117 states and 94355 transitions. [2022-01-18 12:00:04,386 INFO L78 Accepts]: Start accepts. Automaton has 28117 states and 94355 transitions. Word has length 331 [2022-01-18 12:00:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:04,386 INFO L470 AbstractCegarLoop]: Abstraction has 28117 states and 94355 transitions. [2022-01-18 12:00:04,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 12.314814814814815) internal successors, (665), 54 states have internal predecessors, (665), 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 12:00:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 28117 states and 94355 transitions. [2022-01-18 12:00:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-01-18 12:00:04,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:04,435 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:04,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:00:04,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:04,647 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:00:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 536409960, now seen corresponding path program 9 times [2022-01-18 12:00:04,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:04,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17861034] [2022-01-18 12:00:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:04,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 3 proven. 141 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-18 12:00:05,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:05,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17861034] [2022-01-18 12:00:05,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17861034] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:05,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455202988] [2022-01-18 12:00:05,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:00:05,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:05,438 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:00:05,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:00:05,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 12:00:05,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:05,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 12:00:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:07,119 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 12:00:07,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 71 treesize of output 23 [2022-01-18 12:00:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 104 proven. 28 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-01-18 12:00:07,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:07,877 INFO L353 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2022-01-18 12:00:07,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 22 [2022-01-18 12:00:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 5 proven. 127 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-01-18 12:00:08,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455202988] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:08,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:08,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 17] total 50 [2022-01-18 12:00:08,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452415048] [2022-01-18 12:00:08,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:08,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 12:00:08,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 12:00:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:00:08,489 INFO L87 Difference]: Start difference. First operand 28117 states and 94355 transitions. Second operand has 50 states, 50 states have (on average 11.3) internal successors, (565), 50 states have internal predecessors, (565), 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 12:00:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:10,284 INFO L93 Difference]: Finished difference Result 36066 states and 116944 transitions. [2022-01-18 12:00:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 12:00:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 11.3) internal successors, (565), 50 states have internal predecessors, (565), 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 331 [2022-01-18 12:00:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:10,362 INFO L225 Difference]: With dead ends: 36066 [2022-01-18 12:00:10,363 INFO L226 Difference]: Without dead ends: 30544 [2022-01-18 12:00:10,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1215, Invalid=6441, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 12:00:10,365 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 3037 mSDsluCounter, 5709 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 5772 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:10,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3037 Valid, 5772 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 922 Invalid, 0 Unknown, 501 Unchecked, 0.4s Time] [2022-01-18 12:00:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30544 states. [2022-01-18 12:00:10,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30544 to 28006. [2022-01-18 12:00:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28006 states, 28005 states have (on average 3.3299410819496518) internal successors, (93255), 28005 states have internal predecessors, (93255), 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 12:00:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28006 states to 28006 states and 93255 transitions. [2022-01-18 12:00:10,865 INFO L78 Accepts]: Start accepts. Automaton has 28006 states and 93255 transitions. Word has length 331 [2022-01-18 12:00:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:10,865 INFO L470 AbstractCegarLoop]: Abstraction has 28006 states and 93255 transitions. [2022-01-18 12:00:10,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.3) internal successors, (565), 50 states have internal predecessors, (565), 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 12:00:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 28006 states and 93255 transitions. [2022-01-18 12:00:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-01-18 12:00:10,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:10,914 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:10,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:00:11,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:11,115 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:00:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 765261942, now seen corresponding path program 10 times [2022-01-18 12:00:11,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:11,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529171325] [2022-01-18 12:00:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:11,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 3 proven. 138 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-18 12:00:11,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529171325] [2022-01-18 12:00:11,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529171325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333981778] [2022-01-18 12:00:11,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:00:11,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:11,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:11,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:00:11,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:00:12,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:00:12,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 12:00:12,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:13,624 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:00:13,624 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 48 treesize of output 20 [2022-01-18 12:00:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 3 proven. 138 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-18 12:00:13,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:13,820 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 12:00:13,821 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 19 treesize of output 11 [2022-01-18 12:00:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-18 12:00:16,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333981778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:16,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:16,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 53 [2022-01-18 12:00:16,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776335691] [2022-01-18 12:00:16,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:16,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 12:00:16,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 12:00:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2399, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 12:00:16,941 INFO L87 Difference]: Start difference. First operand 28006 states and 93255 transitions. Second operand has 53 states, 53 states have (on average 12.50943396226415) internal successors, (663), 53 states have internal predecessors, (663), 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 12:00:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:19,333 INFO L93 Difference]: Finished difference Result 37316 states and 123340 transitions. [2022-01-18 12:00:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 12:00:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 12.50943396226415) internal successors, (663), 53 states have internal predecessors, (663), 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 331 [2022-01-18 12:00:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:19,367 INFO L225 Difference]: With dead ends: 37316 [2022-01-18 12:00:19,367 INFO L226 Difference]: Without dead ends: 14004 [2022-01-18 12:00:19,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 636 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1694, Invalid=8406, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 12:00:19,369 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 2741 mSDsluCounter, 6062 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:19,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 5965 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1240 Invalid, 0 Unknown, 36 Unchecked, 0.6s Time] [2022-01-18 12:00:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2022-01-18 12:00:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 12192. [2022-01-18 12:00:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 12191 states have (on average 3.340825198917234) internal successors, (40728), 12191 states have internal predecessors, (40728), 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 12:00:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 40728 transitions. [2022-01-18 12:00:19,584 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 40728 transitions. Word has length 331 [2022-01-18 12:00:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:19,584 INFO L470 AbstractCegarLoop]: Abstraction has 12192 states and 40728 transitions. [2022-01-18 12:00:19,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 12.50943396226415) internal successors, (663), 53 states have internal predecessors, (663), 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 12:00:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 40728 transitions. [2022-01-18 12:00:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-01-18 12:00:19,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:19,604 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:19,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 12:00:19,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:19,805 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:00:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash 768372776, now seen corresponding path program 11 times [2022-01-18 12:00:19,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:19,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889401764] [2022-01-18 12:00:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:19,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 215 proven. 196 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-01-18 12:00:20,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:20,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889401764] [2022-01-18 12:00:20,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889401764] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:20,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101847500] [2022-01-18 12:00:20,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:00:20,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:20,020 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:00:20,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:00:21,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-18 12:00:21,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:21,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 12:00:21,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 304 proven. 119 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-01-18 12:00:22,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 266 proven. 157 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-01-18 12:00:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101847500] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:24,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:24,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 20] total 55 [2022-01-18 12:00:24,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566726286] [2022-01-18 12:00:24,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:24,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 12:00:24,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 12:00:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=2381, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:00:24,669 INFO L87 Difference]: Start difference. First operand 12192 states and 40728 transitions. Second operand has 55 states, 55 states have (on average 15.472727272727273) internal successors, (851), 55 states have internal predecessors, (851), 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 12:00:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:26,201 INFO L93 Difference]: Finished difference Result 28686 states and 95342 transitions. [2022-01-18 12:00:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:00:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 15.472727272727273) internal successors, (851), 55 states have internal predecessors, (851), 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 385 [2022-01-18 12:00:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:26,239 INFO L225 Difference]: With dead ends: 28686 [2022-01-18 12:00:26,240 INFO L226 Difference]: Without dead ends: 12206 [2022-01-18 12:00:26,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1895, Invalid=8005, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 12:00:26,241 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 2711 mSDsluCounter, 5967 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 5893 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:26,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 5893 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:00:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12206 states. [2022-01-18 12:00:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12206 to 12206. [2022-01-18 12:00:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 12205 states have (on average 3.3381401065137237) internal successors, (40742), 12205 states have internal predecessors, (40742), 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 12:00:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 40742 transitions. [2022-01-18 12:00:26,503 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 40742 transitions. Word has length 385 [2022-01-18 12:00:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:26,503 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 40742 transitions. [2022-01-18 12:00:26,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 15.472727272727273) internal successors, (851), 55 states have internal predecessors, (851), 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 12:00:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 40742 transitions. [2022-01-18 12:00:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-01-18 12:00:26,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:26,522 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:26,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:00:26,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:26,723 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:00:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1626563064, now seen corresponding path program 12 times [2022-01-18 12:00:26,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:26,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802785552] [2022-01-18 12:00:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:26,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 16 proven. 440 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-01-18 12:00:27,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802785552] [2022-01-18 12:00:27,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802785552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025832063] [2022-01-18 12:00:27,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:00:27,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:27,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:27,828 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:00:27,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:00:28,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-18 12:00:28,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:28,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 12:00:28,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:29,579 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:00:29,580 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 50 treesize of output 20 [2022-01-18 12:00:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 299 proven. 52 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-01-18 12:00:29,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:29,771 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 12:00:29,771 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 19 treesize of output 11 [2022-01-18 12:00:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-01-18 12:00:30,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025832063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:30,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:30,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20, 20] total 67 [2022-01-18 12:00:30,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15347732] [2022-01-18 12:00:30,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:30,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-18 12:00:30,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:30,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-18 12:00:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 12:00:30,806 INFO L87 Difference]: Start difference. First operand 12206 states and 40742 transitions. Second operand has 67 states, 67 states have (on average 10.417910447761194) internal successors, (698), 67 states have internal predecessors, (698), 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 12:00:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:35,809 INFO L93 Difference]: Finished difference Result 29938 states and 100480 transitions. [2022-01-18 12:00:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 12:00:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 10.417910447761194) internal successors, (698), 67 states have internal predecessors, (698), 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 399 [2022-01-18 12:00:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:35,840 INFO L225 Difference]: With dead ends: 29938 [2022-01-18 12:00:35,840 INFO L226 Difference]: Without dead ends: 12223 [2022-01-18 12:00:35,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8253 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3576, Invalid=23814, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 12:00:35,844 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 4254 mSDsluCounter, 11926 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 11379 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:35,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4254 Valid, 11379 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 12:00:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12223 states. [2022-01-18 12:00:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12223 to 12213. [2022-01-18 12:00:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12213 states, 12212 states have (on average 3.3367998689813296) internal successors, (40749), 12212 states have internal predecessors, (40749), 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 12:00:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12213 states to 12213 states and 40749 transitions. [2022-01-18 12:00:36,142 INFO L78 Accepts]: Start accepts. Automaton has 12213 states and 40749 transitions. Word has length 399 [2022-01-18 12:00:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:36,142 INFO L470 AbstractCegarLoop]: Abstraction has 12213 states and 40749 transitions. [2022-01-18 12:00:36,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 10.417910447761194) internal successors, (698), 67 states have internal predecessors, (698), 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 12:00:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12213 states and 40749 transitions. [2022-01-18 12:00:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-01-18 12:00:36,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:36,162 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:36,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:00:36,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:36,363 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:00:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1834694123, now seen corresponding path program 13 times [2022-01-18 12:00:36,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447423253] [2022-01-18 12:00:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 3 proven. 496 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-18 12:00:38,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447423253] [2022-01-18 12:00:38,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447423253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785708779] [2022-01-18 12:00:38,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:00:38,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:38,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:38,080 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:00:38,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:00:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 12:00:38,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-01-18 12:00:39,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:39,460 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 12:00:39,460 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 19 treesize of output 11 [2022-01-18 12:00:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-01-18 12:00:40,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785708779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:40,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:40,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 15, 8] total 50 [2022-01-18 12:00:40,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291658528] [2022-01-18 12:00:40,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:40,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 12:00:40,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 12:00:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2287, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:00:40,020 INFO L87 Difference]: Start difference. First operand 12213 states and 40749 transitions. Second operand has 50 states, 50 states have (on average 10.94) internal successors, (547), 50 states have internal predecessors, (547), 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 12:00:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:46,513 INFO L93 Difference]: Finished difference Result 48244 states and 162383 transitions. [2022-01-18 12:00:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 12:00:46,513 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 10.94) internal successors, (547), 50 states have internal predecessors, (547), 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 406 [2022-01-18 12:00:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:46,513 INFO L225 Difference]: With dead ends: 48244 [2022-01-18 12:00:46,513 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 12:00:46,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 797 SyntacticMatches, 6 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6710 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2154, Invalid=20798, Unknown=0, NotChecked=0, Total=22952 [2022-01-18 12:00:46,515 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 3457 mSDsluCounter, 9276 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 8871 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:46,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3457 Valid, 8871 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3460 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 12:00:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 12:00:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 12:00:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 12:00:46,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 406 [2022-01-18 12:00:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:46,516 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 12:00:46,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.94) internal successors, (547), 50 states have internal predecessors, (547), 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 12:00:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 12:00:46,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 12:00:46,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 12:00:46,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 12:00:46,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 12:00:46,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 12:00:46,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:00:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 12:00:46,744 INFO L732 BasicCegarLoop]: Path program histogram: [13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:00:46,746 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:00:46,746 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:00:46,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:00:46 BasicIcfg [2022-01-18 12:00:46,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:00:46,754 INFO L158 Benchmark]: Toolchain (without parser) took 376585.89ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 302.7MB in the beginning and 9.5GB in the end (delta: -9.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-18 12:00:46,754 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:00:46,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.38ms. Allocated memory is still 356.5MB. Free memory was 302.5MB in the beginning and 326.1MB in the end (delta: -23.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. [2022-01-18 12:00:46,754 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.89ms. Allocated memory is still 356.5MB. Free memory was 326.1MB in the beginning and 322.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:00:46,754 INFO L158 Benchmark]: Boogie Preprocessor took 28.24ms. Allocated memory is still 356.5MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:00:46,754 INFO L158 Benchmark]: RCFGBuilder took 820.77ms. Allocated memory is still 356.5MB. Free memory was 320.8MB in the beginning and 281.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2022-01-18 12:00:46,755 INFO L158 Benchmark]: TraceAbstraction took 375408.89ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 281.0MB in the beginning and 9.5GB in the end (delta: -9.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-18 12:00:46,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 277.38ms. Allocated memory is still 356.5MB. Free memory was 302.5MB in the beginning and 326.1MB in the end (delta: -23.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.89ms. Allocated memory is still 356.5MB. Free memory was 326.1MB in the beginning and 322.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.24ms. Allocated memory is still 356.5MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 820.77ms. Allocated memory is still 356.5MB. Free memory was 320.8MB in the beginning and 281.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 375408.89ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 281.0MB in the beginning and 9.5GB in the end (delta: -9.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 162]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 284 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 375.2s, OverallIterations: 35, TraceHistogramMax: 12, PathProgramHistogramMax: 13, EmptinessCheckTime: 5.4s, AutomataDifference: 138.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51311 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51311 mSDsluCounter, 118012 SdHoareTripleChecker+Invalid, 11.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1935 IncrementalHoareTripleChecker+Unchecked, 116436 mSDsCounter, 1934 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29990 IncrementalHoareTripleChecker+Invalid, 33859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1934 mSolverCounterUnsat, 9347 mSDtfsCounter, 29990 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12496 GetRequests, 10897 SyntacticMatches, 34 SemanticMatches, 1565 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 43660 ImplicationChecksByTransitivity, 40.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432774occurred in iteration=25, InterpolantAutomatonStates: 968, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 156.2s AutomataMinimizationTime, 35 MinimizatonAttempts, 1306443 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 61.0s InterpolantComputationTime, 14586 NumberOfCodeBlocks, 14462 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 20024 ConstructedInterpolants, 249 QuantifiedInterpolants, 166311 SizeOfPredicates, 376 NumberOfNonLiveVariables, 13393 ConjunctsInSsa, 545 ConjunctsInUnsatCore, 74 InterpolantComputations, 16 PerfectInterpolantSequences, 6032/10135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 12:00:46,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...