/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/airline-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:44:01,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:44:01,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:44:01,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:44:01,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:44:01,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:44:01,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:44:01,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:44:01,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:44:01,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:44:01,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:44:01,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:44:01,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:44:01,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:44:01,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:44:01,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:44:01,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:44:01,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:44:01,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:44:01,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:44:01,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:44:01,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:44:01,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:44:01,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:44:01,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:44:01,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:44:01,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:44:01,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:44:01,696 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 13:44:01,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:44:01,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:44:01,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:44:01,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:44:01,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:44:01,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:44:01,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:44:01,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:44:01,714 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:44:01,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:44:01,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:44:01,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:44:01,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:44:01,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:44:01,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:44:01,717 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:44:01,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:44:01,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:44:01,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:44:01,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:44:01,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:44:01,960 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:44:01,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/airline-25.i [2022-01-18 13:44:02,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f23f8e6/0071da10229b4cfb875b5501670b47f4/FLAGddc4e79da [2022-01-18 13:44:02,465 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:44:02,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-25.i [2022-01-18 13:44:02,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f23f8e6/0071da10229b4cfb875b5501670b47f4/FLAGddc4e79da [2022-01-18 13:44:02,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f23f8e6/0071da10229b4cfb875b5501670b47f4 [2022-01-18 13:44:02,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:44:02,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:44:02,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:44:02,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:44:02,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:44:02,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:44:02" (1/1) ... [2022-01-18 13:44:02,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa58e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:02, skipping insertion in model container [2022-01-18 13:44:02,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:44:02" (1/1) ... [2022-01-18 13:44:02,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:44:02,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:44:03,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-25.i[32101,32114] [2022-01-18 13:44:03,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:44:03,142 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:44:03,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-25.i[32101,32114] [2022-01-18 13:44:03,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:44:03,198 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:44:03,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03 WrapperNode [2022-01-18 13:44:03,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:44:03,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:44:03,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:44:03,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:44:03,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,230 INFO L137 Inliner]: procedures = 162, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2022-01-18 13:44:03,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:44:03,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:44:03,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:44:03,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:44:03,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:44:03,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:44:03,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:44:03,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:44:03,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (1/1) ... [2022-01-18 13:44:03,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:44:03,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:03,284 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 13:44:03,309 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 13:44:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:44:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:44:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 13:44:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:44:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:44:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure salethread [2022-01-18 13:44:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure salethread [2022-01-18 13:44:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:44:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:44:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 13:44:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:44:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:44:03,327 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 13:44:03,431 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:44:03,441 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:44:03,576 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:44:03,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:44:03,581 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 13:44:03,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:44:03 BoogieIcfgContainer [2022-01-18 13:44:03,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:44:03,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:44:03,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:44:03,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:44:03,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:44:02" (1/3) ... [2022-01-18 13:44:03,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fd3b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:44:03, skipping insertion in model container [2022-01-18 13:44:03,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:03" (2/3) ... [2022-01-18 13:44:03,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fd3b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:44:03, skipping insertion in model container [2022-01-18 13:44:03,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:44:03" (3/3) ... [2022-01-18 13:44:03,589 INFO L111 eAbstractionObserver]: Analyzing ICFG airline-25.i [2022-01-18 13:44:03,592 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:44:03,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:44:03,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:44:03,593 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:44:03,625 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,625 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,626 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,627 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,627 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,627 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,627 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,628 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,628 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,628 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,628 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,628 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,629 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,629 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,629 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,632 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,632 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,632 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,632 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of1ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,632 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:03,635 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 13:44:03,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:44:03,698 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 13:44:03,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:03,711 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 69 transitions, 146 flow [2022-01-18 13:44:03,756 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 284 states, 279 states have (on average 2.060931899641577) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 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 13:44:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 279 states have (on average 2.060931899641577) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 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 13:44:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:03,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:03,766 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] [2022-01-18 13:44:03,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 439318582, now seen corresponding path program 1 times [2022-01-18 13:44:03,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:03,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124794064] [2022-01-18 13:44:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:03,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:03,908 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 13:44:03,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:03,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124794064] [2022-01-18 13:44:03,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124794064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:03,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:03,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:44:03,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831862190] [2022-01-18 13:44:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:03,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:44:03,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:44:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:44:03,938 INFO L87 Difference]: Start difference. First operand has 284 states, 279 states have (on average 2.060931899641577) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:03,963 INFO L93 Difference]: Finished difference Result 275 states and 527 transitions. [2022-01-18 13:44:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:44:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:03,973 INFO L225 Difference]: With dead ends: 275 [2022-01-18 13:44:03,973 INFO L226 Difference]: Without dead ends: 165 [2022-01-18 13:44:03,975 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 13:44:03,977 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:03,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-18 13:44:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-01-18 13:44:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.822085889570552) internal successors, (297), 164 states have internal predecessors, (297), 0 states have call successors, (0), 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 13:44:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 297 transitions. [2022-01-18 13:44:04,016 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 297 transitions. Word has length 30 [2022-01-18 13:44:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:04,017 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 297 transitions. [2022-01-18 13:44:04,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 297 transitions. [2022-01-18 13:44:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:04,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:04,018 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] [2022-01-18 13:44:04,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:44:04,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash 467977524, now seen corresponding path program 1 times [2022-01-18 13:44:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841908613] [2022-01-18 13:44:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:04,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:04,103 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 13:44:04,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:04,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841908613] [2022-01-18 13:44:04,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841908613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:04,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:04,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:04,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99868530] [2022-01-18 13:44:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:04,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:04,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:04,106 INFO L87 Difference]: Start difference. First operand 165 states and 297 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:04,148 INFO L93 Difference]: Finished difference Result 164 states and 295 transitions. [2022-01-18 13:44:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:04,151 INFO L225 Difference]: With dead ends: 164 [2022-01-18 13:44:04,151 INFO L226 Difference]: Without dead ends: 164 [2022-01-18 13:44:04,151 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 13:44:04,152 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:04,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 96 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-18 13:44:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-01-18 13:44:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.8209876543209877) internal successors, (295), 163 states have internal predecessors, (295), 0 states have call successors, (0), 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 13:44:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 295 transitions. [2022-01-18 13:44:04,169 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 295 transitions. Word has length 30 [2022-01-18 13:44:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:04,170 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 295 transitions. [2022-01-18 13:44:04,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 295 transitions. [2022-01-18 13:44:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 13:44:04,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:04,172 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] [2022-01-18 13:44:04,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:44:04,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1565839232, now seen corresponding path program 1 times [2022-01-18 13:44:04,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:04,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301672642] [2022-01-18 13:44:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:04,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:44:04,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301672642] [2022-01-18 13:44:04,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301672642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117978158] [2022-01-18 13:44:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:04,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:04,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:04,291 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 13:44:04,292 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 13:44:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:04,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 13:44:04,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:04,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:44:04,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117978158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:04,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:44:04,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-18 13:44:04,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138489617] [2022-01-18 13:44:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:04,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:04,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:04,497 INFO L87 Difference]: Start difference. First operand 164 states and 295 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:04,525 INFO L93 Difference]: Finished difference Result 128 states and 219 transitions. [2022-01-18 13:44:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-18 13:44:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:04,530 INFO L225 Difference]: With dead ends: 128 [2022-01-18 13:44:04,530 INFO L226 Difference]: Without dead ends: 128 [2022-01-18 13:44:04,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:04,531 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:04,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 109 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:04,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-18 13:44:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-01-18 13:44:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.7244094488188977) internal successors, (219), 127 states have internal predecessors, (219), 0 states have call successors, (0), 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 13:44:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 219 transitions. [2022-01-18 13:44:04,541 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 219 transitions. Word has length 40 [2022-01-18 13:44:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:04,541 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 219 transitions. [2022-01-18 13:44:04,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 219 transitions. [2022-01-18 13:44:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-18 13:44:04,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:04,550 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] [2022-01-18 13:44:04,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 13:44:04,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:04,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2021417157, now seen corresponding path program 1 times [2022-01-18 13:44:04,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:04,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171850083] [2022-01-18 13:44:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:04,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:04,861 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 13:44:04,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171850083] [2022-01-18 13:44:04,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171850083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:04,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:04,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:04,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132352759] [2022-01-18 13:44:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:04,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:04,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:04,866 INFO L87 Difference]: Start difference. First operand 128 states and 219 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:04,886 INFO L93 Difference]: Finished difference Result 167 states and 265 transitions. [2022-01-18 13:44:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:04,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-18 13:44:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:04,889 INFO L225 Difference]: With dead ends: 167 [2022-01-18 13:44:04,889 INFO L226 Difference]: Without dead ends: 167 [2022-01-18 13:44:04,889 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 13:44:04,893 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:04,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 92 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-18 13:44:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 128. [2022-01-18 13:44:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.6456692913385826) internal successors, (209), 127 states have internal predecessors, (209), 0 states have call successors, (0), 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 13:44:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 209 transitions. [2022-01-18 13:44:04,902 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 209 transitions. Word has length 51 [2022-01-18 13:44:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:04,902 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 209 transitions. [2022-01-18 13:44:04,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 209 transitions. [2022-01-18 13:44:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 13:44:04,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:04,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:04,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:44:04,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1628201363, now seen corresponding path program 1 times [2022-01-18 13:44:04,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825959653] [2022-01-18 13:44:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:04,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:04,999 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 13:44:05,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:05,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825959653] [2022-01-18 13:44:05,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825959653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:05,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:05,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 13:44:05,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799468405] [2022-01-18 13:44:05,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:05,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:44:05,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:44:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:44:05,002 INFO L87 Difference]: Start difference. First operand 128 states and 209 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:05,021 INFO L93 Difference]: Finished difference Result 118 states and 180 transitions. [2022-01-18 13:44:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 13:44:05,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-18 13:44:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:05,024 INFO L225 Difference]: With dead ends: 118 [2022-01-18 13:44:05,024 INFO L226 Difference]: Without dead ends: 118 [2022-01-18 13:44:05,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:44:05,028 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:05,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 124 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-18 13:44:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-01-18 13:44:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 117 states have internal predecessors, (180), 0 states have call successors, (0), 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 13:44:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 180 transitions. [2022-01-18 13:44:05,040 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 180 transitions. Word has length 54 [2022-01-18 13:44:05,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 180 transitions. [2022-01-18 13:44:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 180 transitions. [2022-01-18 13:44:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 13:44:05,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:05,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:05,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:44:05,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -213342861, now seen corresponding path program 1 times [2022-01-18 13:44:05,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:05,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736899241] [2022-01-18 13:44:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:05,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:05,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:05,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736899241] [2022-01-18 13:44:05,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736899241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:05,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223899506] [2022-01-18 13:44:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:05,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:05,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:05,113 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 13:44:05,121 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 13:44:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:44:05,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:05,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:44:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:05,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223899506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:44:05,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:44:05,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:44:05,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466855652] [2022-01-18 13:44:05,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:44:05,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:44:05,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:44:05,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:44:05,474 INFO L87 Difference]: Start difference. First operand 118 states and 180 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:44:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:05,510 INFO L93 Difference]: Finished difference Result 77 states and 111 transitions. [2022-01-18 13:44:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 13:44:05,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-18 13:44:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:05,513 INFO L225 Difference]: With dead ends: 77 [2022-01-18 13:44:05,513 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:44:05,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 13:44:05,516 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:05,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 205 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:44:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:44:05,517 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 13:44:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:44:05,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-01-18 13:44:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:05,518 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:44:05,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:44:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:44:05,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:44:05,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:44:05,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 13:44:05,727 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,SelfDestructingSolverStorable5 [2022-01-18 13:44:05,729 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-18 13:44:05,730 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:44:05,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:44:05,732 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 13:44:05,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:05,734 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 69 transitions, 146 flow [2022-01-18 13:44:05,743 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 128 states, 127 states have (on average 1.8031496062992125) internal successors, (229), 127 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 13:44:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 127 states have (on average 1.8031496062992125) internal successors, (229), 127 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 13:44:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 13:44:05,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:05,747 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] [2022-01-18 13:44:05,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:44:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2028145231, now seen corresponding path program 1 times [2022-01-18 13:44:05,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:05,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82283984] [2022-01-18 13:44:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:05,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:05,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:44:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:05,805 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:44:05,805 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:44:05,806 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:44:05,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 13:44:05,806 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:44:05,806 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:44:05,810 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:44:05,810 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 13:44:05,823 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,823 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,824 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,825 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,826 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,826 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,826 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,826 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,827 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,828 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,829 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,829 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,829 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,834 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,835 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,835 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,835 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,836 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,836 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,836 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,836 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,837 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,837 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,837 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,837 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,838 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:05,841 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:44:05,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:44:05,843 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 13:44:05,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:05,847 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 81 transitions, 180 flow [2022-01-18 13:44:05,927 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2669 states, 2660 states have (on average 3.0973684210526318) internal successors, (8239), 2668 states have internal predecessors, (8239), 0 states have call successors, (0), 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 13:44:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 2669 states, 2660 states have (on average 3.0973684210526318) internal successors, (8239), 2668 states have internal predecessors, (8239), 0 states have call successors, (0), 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 13:44:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:05,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:05,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:05,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1619998698, now seen corresponding path program 1 times [2022-01-18 13:44:05,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:05,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796464596] [2022-01-18 13:44:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:05,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:05,971 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 13:44:05,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:05,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796464596] [2022-01-18 13:44:05,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796464596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:05,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:05,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:44:05,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887693552] [2022-01-18 13:44:05,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:05,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:44:05,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:44:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:44:05,982 INFO L87 Difference]: Start difference. First operand has 2669 states, 2660 states have (on average 3.0973684210526318) internal successors, (8239), 2668 states have internal predecessors, (8239), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:06,019 INFO L93 Difference]: Finished difference Result 2570 states and 7650 transitions. [2022-01-18 13:44:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:44:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:06,032 INFO L225 Difference]: With dead ends: 2570 [2022-01-18 13:44:06,032 INFO L226 Difference]: Without dead ends: 1470 [2022-01-18 13:44:06,032 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 13:44:06,033 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:06,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2022-01-18 13:44:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1470. [2022-01-18 13:44:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1466 states have (on average 2.899045020463847) internal successors, (4250), 1469 states have internal predecessors, (4250), 0 states have call successors, (0), 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 13:44:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4250 transitions. [2022-01-18 13:44:06,084 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4250 transitions. Word has length 30 [2022-01-18 13:44:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:06,085 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 4250 transitions. [2022-01-18 13:44:06,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4250 transitions. [2022-01-18 13:44:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:06,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:06,085 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] [2022-01-18 13:44:06,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 13:44:06,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1591339756, now seen corresponding path program 1 times [2022-01-18 13:44:06,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502514986] [2022-01-18 13:44:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,106 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 13:44:06,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502514986] [2022-01-18 13:44:06,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502514986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:06,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:06,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:06,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651846003] [2022-01-18 13:44:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:06,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:06,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:06,109 INFO L87 Difference]: Start difference. First operand 1470 states and 4250 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:06,138 INFO L93 Difference]: Finished difference Result 1469 states and 4248 transitions. [2022-01-18 13:44:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:06,147 INFO L225 Difference]: With dead ends: 1469 [2022-01-18 13:44:06,148 INFO L226 Difference]: Without dead ends: 1469 [2022-01-18 13:44:06,148 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 13:44:06,149 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 18 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:06,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 120 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-01-18 13:44:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2022-01-18 13:44:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1465 states have (on average 2.8996587030716725) internal successors, (4248), 1468 states have internal predecessors, (4248), 0 states have call successors, (0), 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 13:44:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4248 transitions. [2022-01-18 13:44:06,191 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4248 transitions. Word has length 30 [2022-01-18 13:44:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:06,191 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 4248 transitions. [2022-01-18 13:44:06,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4248 transitions. [2022-01-18 13:44:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 13:44:06,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:06,193 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] [2022-01-18 13:44:06,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 13:44:06,194 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash -776830794, now seen corresponding path program 1 times [2022-01-18 13:44:06,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:06,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594844748] [2022-01-18 13:44:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:44:06,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594844748] [2022-01-18 13:44:06,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594844748] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771814490] [2022-01-18 13:44:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:06,244 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 13:44:06,245 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 13:44:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 13:44:06,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:06,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:44:06,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771814490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:06,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:44:06,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-18 13:44:06,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952825815] [2022-01-18 13:44:06,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:06,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:06,380 INFO L87 Difference]: Start difference. First operand 1469 states and 4248 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:06,408 INFO L93 Difference]: Finished difference Result 1175 states and 3256 transitions. [2022-01-18 13:44:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-18 13:44:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:06,416 INFO L225 Difference]: With dead ends: 1175 [2022-01-18 13:44:06,416 INFO L226 Difference]: Without dead ends: 1175 [2022-01-18 13:44:06,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:06,418 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:06,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 140 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-01-18 13:44:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1154. [2022-01-18 13:44:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1151 states have (on average 2.8001737619461338) internal successors, (3223), 1153 states have internal predecessors, (3223), 0 states have call successors, (0), 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 13:44:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3223 transitions. [2022-01-18 13:44:06,450 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3223 transitions. Word has length 40 [2022-01-18 13:44:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:06,451 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 3223 transitions. [2022-01-18 13:44:06,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3223 transitions. [2022-01-18 13:44:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-18 13:44:06,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:06,455 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] [2022-01-18 13:44:06,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 13:44:06,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:06,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash 877731663, now seen corresponding path program 1 times [2022-01-18 13:44:06,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:06,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395470209] [2022-01-18 13:44:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,704 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 13:44:06,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:06,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395470209] [2022-01-18 13:44:06,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395470209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:06,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:06,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:06,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778196730] [2022-01-18 13:44:06,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:06,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:06,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:06,706 INFO L87 Difference]: Start difference. First operand 1154 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:06,730 INFO L93 Difference]: Finished difference Result 1847 states and 4745 transitions. [2022-01-18 13:44:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-18 13:44:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:06,739 INFO L225 Difference]: With dead ends: 1847 [2022-01-18 13:44:06,739 INFO L226 Difference]: Without dead ends: 1847 [2022-01-18 13:44:06,740 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 13:44:06,740 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 42 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:06,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 110 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-01-18 13:44:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1348. [2022-01-18 13:44:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1345 states have (on average 2.6319702602230484) internal successors, (3540), 1347 states have internal predecessors, (3540), 0 states have call successors, (0), 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 13:44:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 3540 transitions. [2022-01-18 13:44:06,805 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 3540 transitions. Word has length 51 [2022-01-18 13:44:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:06,806 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 3540 transitions. [2022-01-18 13:44:06,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 3540 transitions. [2022-01-18 13:44:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 13:44:06,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:06,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:06,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 13:44:06,809 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1359126688, now seen corresponding path program 1 times [2022-01-18 13:44:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506120849] [2022-01-18 13:44:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:06,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506120849] [2022-01-18 13:44:06,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506120849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:06,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837630165] [2022-01-18 13:44:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:06,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:06,878 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 13:44:06,898 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 13:44:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:06,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:44:06,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:07,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:44:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:07,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837630165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:44:07,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:44:07,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:44:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754052071] [2022-01-18 13:44:07,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:44:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:44:07,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:44:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:44:07,114 INFO L87 Difference]: Start difference. First operand 1348 states and 3540 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:44:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:07,166 INFO L93 Difference]: Finished difference Result 707 states and 1852 transitions. [2022-01-18 13:44:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:44:07,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-18 13:44:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:07,166 INFO L225 Difference]: With dead ends: 707 [2022-01-18 13:44:07,166 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:44:07,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:44:07,167 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 167 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:07,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 325 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:44:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:44:07,168 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 13:44:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:44:07,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-01-18 13:44:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:07,168 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:44:07,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:44:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:44:07,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:44:07,169 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:44:07,191 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 13:44:07,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:07,385 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-18 13:44:07,385 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:44:07,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:44:07,386 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 13:44:07,386 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:07,387 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 81 transitions, 180 flow [2022-01-18 13:44:07,411 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1010 states, 1009 states have (on average 2.9821605550049552) internal successors, (3009), 1009 states have internal predecessors, (3009), 0 states have call successors, (0), 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 13:44:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 1010 states, 1009 states have (on average 2.9821605550049552) internal successors, (3009), 1009 states have internal predecessors, (3009), 0 states have call successors, (0), 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 13:44:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-18 13:44:07,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:07,414 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-18 13:44:07,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:44:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash 638183219, now seen corresponding path program 1 times [2022-01-18 13:44:07,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:07,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369814243] [2022-01-18 13:44:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:07,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:07,426 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:44:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:07,437 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:44:07,437 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:44:07,437 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:44:07,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 13:44:07,438 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:44:07,438 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:44:07,438 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:44:07,438 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,445 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,446 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,447 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,448 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,449 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,450 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,451 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,452 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:07,456 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 13:44:07,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:44:07,458 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 13:44:07,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:07,461 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 93 transitions, 216 flow [2022-01-18 13:44:08,198 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 25844 states, 25827 states have (on average 4.12684400046463) internal successors, (106584), 25843 states have internal predecessors, (106584), 0 states have call successors, (0), 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 13:44:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 25844 states, 25827 states have (on average 4.12684400046463) internal successors, (106584), 25843 states have internal predecessors, (106584), 0 states have call successors, (0), 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 13:44:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:08,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:08,392 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] [2022-01-18 13:44:08,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -962015626, now seen corresponding path program 1 times [2022-01-18 13:44:08,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092907722] [2022-01-18 13:44:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:08,407 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 13:44:08,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092907722] [2022-01-18 13:44:08,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092907722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:08,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:08,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:44:08,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736644126] [2022-01-18 13:44:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:08,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:44:08,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:44:08,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:44:08,456 INFO L87 Difference]: Start difference. First operand has 25844 states, 25827 states have (on average 4.12684400046463) internal successors, (106584), 25843 states have internal predecessors, (106584), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:08,915 INFO L93 Difference]: Finished difference Result 24845 states and 99766 transitions. [2022-01-18 13:44:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:44:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:09,070 INFO L225 Difference]: With dead ends: 24845 [2022-01-18 13:44:09,071 INFO L226 Difference]: Without dead ends: 14205 [2022-01-18 13:44:09,071 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 13:44:09,071 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:09,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2022-01-18 13:44:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 14205. [2022-01-18 13:44:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14205 states, 14197 states have (on average 3.9428048179192787) internal successors, (55976), 14204 states have internal predecessors, (55976), 0 states have call successors, (0), 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 13:44:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14205 states to 14205 states and 55976 transitions. [2022-01-18 13:44:09,831 INFO L78 Accepts]: Start accepts. Automaton has 14205 states and 55976 transitions. Word has length 30 [2022-01-18 13:44:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:09,837 INFO L470 AbstractCegarLoop]: Abstraction has 14205 states and 55976 transitions. [2022-01-18 13:44:09,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14205 states and 55976 transitions. [2022-01-18 13:44:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:09,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:09,838 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] [2022-01-18 13:44:09,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 13:44:09,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash -933356684, now seen corresponding path program 1 times [2022-01-18 13:44:09,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:09,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411545910] [2022-01-18 13:44:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:09,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:09,852 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 13:44:09,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411545910] [2022-01-18 13:44:09,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411545910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:09,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:09,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:09,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589757597] [2022-01-18 13:44:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:09,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:09,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:09,854 INFO L87 Difference]: Start difference. First operand 14205 states and 55976 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:09,980 INFO L93 Difference]: Finished difference Result 14204 states and 55974 transitions. [2022-01-18 13:44:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:10,172 INFO L225 Difference]: With dead ends: 14204 [2022-01-18 13:44:10,172 INFO L226 Difference]: Without dead ends: 14204 [2022-01-18 13:44:10,172 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 13:44:10,173 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 18 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:10,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 140 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14204 states. [2022-01-18 13:44:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14204 to 14204. [2022-01-18 13:44:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14204 states, 14196 states have (on average 3.9429416737109046) internal successors, (55974), 14203 states have internal predecessors, (55974), 0 states have call successors, (0), 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 13:44:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 55974 transitions. [2022-01-18 13:44:10,765 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 55974 transitions. Word has length 30 [2022-01-18 13:44:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:10,765 INFO L470 AbstractCegarLoop]: Abstraction has 14204 states and 55974 transitions. [2022-01-18 13:44:10,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 55974 transitions. [2022-01-18 13:44:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 13:44:10,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:10,766 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] [2022-01-18 13:44:10,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 13:44:10,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 96906988, now seen corresponding path program 1 times [2022-01-18 13:44:10,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:10,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417437951] [2022-01-18 13:44:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:10,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:44:10,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:10,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417437951] [2022-01-18 13:44:10,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417437951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:10,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293249532] [2022-01-18 13:44:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:10,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:10,829 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 13:44:10,854 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 13:44:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:10,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 13:44:10,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:10,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:44:10,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293249532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:10,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:44:10,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-18 13:44:10,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115974729] [2022-01-18 13:44:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:10,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:10,942 INFO L87 Difference]: Start difference. First operand 14204 states and 55974 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:11,019 INFO L93 Difference]: Finished difference Result 11615 states and 44224 transitions. [2022-01-18 13:44:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:11,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-18 13:44:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:11,066 INFO L225 Difference]: With dead ends: 11615 [2022-01-18 13:44:11,067 INFO L226 Difference]: Without dead ends: 11615 [2022-01-18 13:44:11,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:11,067 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:11,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 170 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11615 states. [2022-01-18 13:44:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11615 to 11378. [2022-01-18 13:44:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11378 states, 11371 states have (on average 3.8358983378770555) internal successors, (43618), 11377 states have internal predecessors, (43618), 0 states have call successors, (0), 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 13:44:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11378 states to 11378 states and 43618 transitions. [2022-01-18 13:44:11,446 INFO L78 Accepts]: Start accepts. Automaton has 11378 states and 43618 transitions. Word has length 40 [2022-01-18 13:44:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:11,447 INFO L470 AbstractCegarLoop]: Abstraction has 11378 states and 43618 transitions. [2022-01-18 13:44:11,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11378 states and 43618 transitions. [2022-01-18 13:44:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-18 13:44:11,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:11,452 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] [2022-01-18 13:44:11,470 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 13:44:11,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 13:44:11,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2000580369, now seen corresponding path program 1 times [2022-01-18 13:44:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507135041] [2022-01-18 13:44:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:11,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:44:11,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507135041] [2022-01-18 13:44:11,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507135041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:11,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:11,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:11,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559641224] [2022-01-18 13:44:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:11,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:11,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:11,683 INFO L87 Difference]: Start difference. First operand 11378 states and 43618 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:11,888 INFO L93 Difference]: Finished difference Result 20063 states and 71544 transitions. [2022-01-18 13:44:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:11,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-18 13:44:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:11,957 INFO L225 Difference]: With dead ends: 20063 [2022-01-18 13:44:11,957 INFO L226 Difference]: Without dead ends: 20063 [2022-01-18 13:44:11,958 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 13:44:11,959 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:11,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 138 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20063 states. [2022-01-18 13:44:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20063 to 15344. [2022-01-18 13:44:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15344 states, 15337 states have (on average 3.6256112668709655) internal successors, (55606), 15343 states have internal predecessors, (55606), 0 states have call successors, (0), 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 13:44:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15344 states to 15344 states and 55606 transitions. [2022-01-18 13:44:12,514 INFO L78 Accepts]: Start accepts. Automaton has 15344 states and 55606 transitions. Word has length 51 [2022-01-18 13:44:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:12,514 INFO L470 AbstractCegarLoop]: Abstraction has 15344 states and 55606 transitions. [2022-01-18 13:44:12,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15344 states and 55606 transitions. [2022-01-18 13:44:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 13:44:12,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:12,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:12,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 13:44:12,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash -963480933, now seen corresponding path program 1 times [2022-01-18 13:44:12,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:12,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421647910] [2022-01-18 13:44:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:12,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:12,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421647910] [2022-01-18 13:44:12,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421647910] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333300424] [2022-01-18 13:44:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:12,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:12,556 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 13:44:12,563 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 13:44:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:12,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:44:12,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:12,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:44:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:12,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333300424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:44:12,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:44:12,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:44:12,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866608164] [2022-01-18 13:44:12,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:44:12,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:44:12,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:44:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:44:12,801 INFO L87 Difference]: Start difference. First operand 15344 states and 55606 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:12,955 INFO L93 Difference]: Finished difference Result 15140 states and 54870 transitions. [2022-01-18 13:44:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:44:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-18 13:44:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:13,010 INFO L225 Difference]: With dead ends: 15140 [2022-01-18 13:44:13,010 INFO L226 Difference]: Without dead ends: 15140 [2022-01-18 13:44:13,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:44:13,011 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 211 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:13,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 416 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15140 states. [2022-01-18 13:44:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15140 to 15140. [2022-01-18 13:44:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15140 states, 15133 states have (on average 3.6258507896649705) internal successors, (54870), 15139 states have internal predecessors, (54870), 0 states have call successors, (0), 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 13:44:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15140 states to 15140 states and 54870 transitions. [2022-01-18 13:44:13,579 INFO L78 Accepts]: Start accepts. Automaton has 15140 states and 54870 transitions. Word has length 54 [2022-01-18 13:44:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:13,579 INFO L470 AbstractCegarLoop]: Abstraction has 15140 states and 54870 transitions. [2022-01-18 13:44:13,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 15140 states and 54870 transitions. [2022-01-18 13:44:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:44:13,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:13,619 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:44:13,641 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 13:44:13,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 13:44:13,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1391880992, now seen corresponding path program 1 times [2022-01-18 13:44:13,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:13,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120524440] [2022-01-18 13:44:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:13,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 13:44:13,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:13,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120524440] [2022-01-18 13:44:13,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120524440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:13,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:13,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 13:44:13,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872720601] [2022-01-18 13:44:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:13,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:44:13,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:13,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:44:13,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:44:13,867 INFO L87 Difference]: Start difference. First operand 15140 states and 54870 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:14,023 INFO L93 Difference]: Finished difference Result 24217 states and 81963 transitions. [2022-01-18 13:44:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 13:44:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:44:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:14,096 INFO L225 Difference]: With dead ends: 24217 [2022-01-18 13:44:14,096 INFO L226 Difference]: Without dead ends: 24217 [2022-01-18 13:44:14,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:44:14,097 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 139 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:14,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 241 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24217 states. [2022-01-18 13:44:14,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24217 to 15854. [2022-01-18 13:44:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15854 states, 15847 states have (on average 3.5312046444121914) internal successors, (55959), 15853 states have internal predecessors, (55959), 0 states have call successors, (0), 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 13:44:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15854 states to 15854 states and 55959 transitions. [2022-01-18 13:44:14,687 INFO L78 Accepts]: Start accepts. Automaton has 15854 states and 55959 transitions. Word has length 74 [2022-01-18 13:44:14,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:14,688 INFO L470 AbstractCegarLoop]: Abstraction has 15854 states and 55959 transitions. [2022-01-18 13:44:14,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:44:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 15854 states and 55959 transitions. [2022-01-18 13:44:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:44:14,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:14,718 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:44:14,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 13:44:14,718 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -152113408, now seen corresponding path program 1 times [2022-01-18 13:44:14,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:14,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140822987] [2022-01-18 13:44:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:14,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-18 13:44:14,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:14,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140822987] [2022-01-18 13:44:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140822987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:14,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704273048] [2022-01-18 13:44:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:14,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:14,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:14,763 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 13:44:14,786 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 13:44:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:14,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:44:14,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:14,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:44:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:15,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704273048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:44:15,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:44:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-01-18 13:44:15,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173307415] [2022-01-18 13:44:15,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:44:15,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:44:15,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:44:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:44:15,175 INFO L87 Difference]: Start difference. First operand 15854 states and 55959 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 13:44:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:15,305 INFO L93 Difference]: Finished difference Result 7225 states and 26136 transitions. [2022-01-18 13:44:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 13:44:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 74 [2022-01-18 13:44:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:15,306 INFO L225 Difference]: With dead ends: 7225 [2022-01-18 13:44:15,306 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:44:15,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:44:15,307 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 636 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:15,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 695 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:44:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:44:15,308 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 13:44:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:44:15,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-01-18 13:44:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:15,308 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:44:15,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 13:44:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:44:15,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:44:15,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:44:15,331 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 13:44:15,523 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 13:44:15,524 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:44:15,524 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:44:15,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:44:15,525 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 13:44:15,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:15,526 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 93 transitions, 216 flow [2022-01-18 13:44:15,749 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8948 states, 8947 states have (on average 4.118587235945009) internal successors, (36849), 8947 states have internal predecessors, (36849), 0 states have call successors, (0), 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 13:44:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 8948 states, 8947 states have (on average 4.118587235945009) internal successors, (36849), 8947 states have internal predecessors, (36849), 0 states have call successors, (0), 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 13:44:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 13:44:15,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:15,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-01-18 13:44:15,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:44:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 629871864, now seen corresponding path program 1 times [2022-01-18 13:44:15,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966378994] [2022-01-18 13:44:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:15,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:15,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:44:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:44:15,800 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:44:15,800 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:44:15,800 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:44:15,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 13:44:15,800 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:44:15,800 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:44:15,801 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:44:15,801 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,809 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,810 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,811 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,812 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,813 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,814 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,815 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,816 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,817 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,818 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:44:15,820 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 13:44:15,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:44:15,823 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 13:44:15,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:44:15,825 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 105 transitions, 254 flow [2022-01-18 13:44:22,374 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 251519 states, 251486 states have (on average 5.152648656386439) internal successors, (1295819), 251518 states have internal predecessors, (1295819), 0 states have call successors, (0), 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 13:44:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 251519 states, 251486 states have (on average 5.152648656386439) internal successors, (1295819), 251518 states have internal predecessors, (1295819), 0 states have call successors, (0), 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 13:44:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:22,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:22,755 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] [2022-01-18 13:44:22,755 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1881699498, now seen corresponding path program 1 times [2022-01-18 13:44:22,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:22,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033942934] [2022-01-18 13:44:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:22,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:22,775 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 13:44:22,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033942934] [2022-01-18 13:44:22,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033942934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:22,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:22,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:44:22,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657725806] [2022-01-18 13:44:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:22,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:44:22,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:44:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:44:23,165 INFO L87 Difference]: Start difference. First operand has 251519 states, 251486 states have (on average 5.152648656386439) internal successors, (1295819), 251518 states have internal predecessors, (1295819), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:27,605 INFO L93 Difference]: Finished difference Result 241520 states and 1218440 transitions. [2022-01-18 13:44:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:44:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:28,576 INFO L225 Difference]: With dead ends: 241520 [2022-01-18 13:44:28,576 INFO L226 Difference]: Without dead ends: 138720 [2022-01-18 13:44:28,576 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 13:44:28,577 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:28,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138720 states. [2022-01-18 13:44:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138720 to 138720. [2022-01-18 13:44:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138720 states, 138704 states have (on average 4.973468681508825) internal successors, (689840), 138719 states have internal predecessors, (689840), 0 states have call successors, (0), 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 13:44:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138720 states to 138720 states and 689840 transitions. [2022-01-18 13:44:35,097 INFO L78 Accepts]: Start accepts. Automaton has 138720 states and 689840 transitions. Word has length 30 [2022-01-18 13:44:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:35,097 INFO L470 AbstractCegarLoop]: Abstraction has 138720 states and 689840 transitions. [2022-01-18 13:44:35,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 138720 states and 689840 transitions. [2022-01-18 13:44:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:44:35,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:35,097 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] [2022-01-18 13:44:35,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 13:44:35,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1853040556, now seen corresponding path program 1 times [2022-01-18 13:44:35,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:35,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058816989] [2022-01-18 13:44:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:35,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:35,113 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 13:44:35,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:35,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058816989] [2022-01-18 13:44:35,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058816989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:35,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:35,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:35,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993712494] [2022-01-18 13:44:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:35,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:35,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:35,115 INFO L87 Difference]: Start difference. First operand 138720 states and 689840 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:37,473 INFO L93 Difference]: Finished difference Result 138719 states and 689838 transitions. [2022-01-18 13:44:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:37,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-18 13:44:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:38,475 INFO L225 Difference]: With dead ends: 138719 [2022-01-18 13:44:38,475 INFO L226 Difference]: Without dead ends: 138719 [2022-01-18 13:44:38,475 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 13:44:38,476 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 18 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:38,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 160 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138719 states. [2022-01-18 13:44:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138719 to 138719. [2022-01-18 13:44:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138719 states, 138703 states have (on average 4.973490119175504) internal successors, (689838), 138718 states have internal predecessors, (689838), 0 states have call successors, (0), 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 13:44:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138719 states to 138719 states and 689838 transitions. [2022-01-18 13:44:45,054 INFO L78 Accepts]: Start accepts. Automaton has 138719 states and 689838 transitions. Word has length 30 [2022-01-18 13:44:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:45,055 INFO L470 AbstractCegarLoop]: Abstraction has 138719 states and 689838 transitions. [2022-01-18 13:44:45,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 13:44:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 138719 states and 689838 transitions. [2022-01-18 13:44:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 13:44:45,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:45,056 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] [2022-01-18 13:44:45,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 13:44:45,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1055374114, now seen corresponding path program 1 times [2022-01-18 13:44:45,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388411233] [2022-01-18 13:44:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:45,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:44:45,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388411233] [2022-01-18 13:44:45,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388411233] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:44:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766925338] [2022-01-18 13:44:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:45,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:44:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:44:45,133 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 13:44:45,141 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 13:44:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 13:44:45,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:44:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:44:45,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:44:45,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766925338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:45,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:44:45,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-18 13:44:45,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424536654] [2022-01-18 13:44:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:45,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:45,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:45,254 INFO L87 Difference]: Start difference. First operand 138719 states and 689838 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:46,837 INFO L93 Difference]: Finished difference Result 115718 states and 559180 transitions. [2022-01-18 13:44:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-18 13:44:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:47,588 INFO L225 Difference]: With dead ends: 115718 [2022-01-18 13:44:47,588 INFO L226 Difference]: Without dead ends: 115718 [2022-01-18 13:44:47,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:44:47,589 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 48 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:47,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 200 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115718 states. [2022-01-18 13:44:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115718 to 113294. [2022-01-18 13:44:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113294 states, 113279 states have (on average 4.858738159764829) internal successors, (550393), 113293 states have internal predecessors, (550393), 0 states have call successors, (0), 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 13:44:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113294 states to 113294 states and 550393 transitions. [2022-01-18 13:44:52,451 INFO L78 Accepts]: Start accepts. Automaton has 113294 states and 550393 transitions. Word has length 40 [2022-01-18 13:44:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:44:52,452 INFO L470 AbstractCegarLoop]: Abstraction has 113294 states and 550393 transitions. [2022-01-18 13:44:52,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:44:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 113294 states and 550393 transitions. [2022-01-18 13:44:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-18 13:44:52,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:44:52,454 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] [2022-01-18 13:44:52,470 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 13:44:52,659 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,SelfDestructingSolverStorable23 [2022-01-18 13:44:52,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:44:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:44:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1946298533, now seen corresponding path program 1 times [2022-01-18 13:44:52,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:44:52,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603707139] [2022-01-18 13:44:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:44:52,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:44:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:44:52,681 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 13:44:52,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:44:52,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603707139] [2022-01-18 13:44:52,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603707139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:44:52,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:44:52,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:44:52,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222549660] [2022-01-18 13:44:52,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:44:52,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:44:52,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:44:52,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:44:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:44:52,683 INFO L87 Difference]: Start difference. First operand 113294 states and 550393 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:44:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:44:54,924 INFO L93 Difference]: Finished difference Result 210503 states and 960775 transitions. [2022-01-18 13:44:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:44:54,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-18 13:44:54,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:44:56,805 INFO L225 Difference]: With dead ends: 210503 [2022-01-18 13:44:56,805 INFO L226 Difference]: Without dead ends: 210503 [2022-01-18 13:44:56,805 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 13:44:56,806 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 66 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:44:56,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 146 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:44:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210503 states. [2022-01-18 13:45:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210503 to 169780. [2022-01-18 13:45:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169780 states, 169765 states have (on average 4.623179100521309) internal successors, (784854), 169779 states have internal predecessors, (784854), 0 states have call successors, (0), 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 13:45:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169780 states to 169780 states and 784854 transitions. [2022-01-18 13:45:04,356 INFO L78 Accepts]: Start accepts. Automaton has 169780 states and 784854 transitions. Word has length 51 [2022-01-18 13:45:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:45:04,356 INFO L470 AbstractCegarLoop]: Abstraction has 169780 states and 784854 transitions. [2022-01-18 13:45:04,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 13:45:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 169780 states and 784854 transitions. [2022-01-18 13:45:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-18 13:45:04,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:45:04,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:45:04,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 13:45:04,360 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:45:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:45:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -519877040, now seen corresponding path program 1 times [2022-01-18 13:45:04,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:45:04,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818824053] [2022-01-18 13:45:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:45:04,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:45:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:45:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:45:04,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:45:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818824053] [2022-01-18 13:45:04,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818824053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:45:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994534551] [2022-01-18 13:45:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:45:04,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:45:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:45:04,392 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 13:45:04,421 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 13:45:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:45:04,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:45:04,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:45:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:45:04,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:45:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:45:04,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994534551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:45:04,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:45:04,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:45:04,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464505598] [2022-01-18 13:45:04,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:45:04,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:45:04,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:45:04,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:45:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:45:04,650 INFO L87 Difference]: Start difference. First operand 169780 states and 784854 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:45:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:45:06,777 INFO L93 Difference]: Finished difference Result 169576 states and 784118 transitions. [2022-01-18 13:45:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:45:06,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-18 13:45:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:45:08,512 INFO L225 Difference]: With dead ends: 169576 [2022-01-18 13:45:08,512 INFO L226 Difference]: Without dead ends: 169576 [2022-01-18 13:45:08,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:45:08,512 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 223 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:45:08,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:45:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169576 states. [2022-01-18 13:45:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169576 to 169576. [2022-01-18 13:45:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169576 states, 169561 states have (on average 4.624400658170216) internal successors, (784118), 169575 states have internal predecessors, (784118), 0 states have call successors, (0), 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 13:45:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169576 states to 169576 states and 784118 transitions. [2022-01-18 13:45:17,084 INFO L78 Accepts]: Start accepts. Automaton has 169576 states and 784118 transitions. Word has length 54 [2022-01-18 13:45:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:45:17,085 INFO L470 AbstractCegarLoop]: Abstraction has 169576 states and 784118 transitions. [2022-01-18 13:45:17,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:45:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 169576 states and 784118 transitions. [2022-01-18 13:45:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:45:17,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:45:17,278 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:45:17,300 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 13:45:17,499 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,SelfDestructingSolverStorable25 [2022-01-18 13:45:17,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:45:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:45:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 891583927, now seen corresponding path program 1 times [2022-01-18 13:45:17,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:45:17,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450033709] [2022-01-18 13:45:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:45:17,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:45:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:45:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-18 13:45:17,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:45:17,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450033709] [2022-01-18 13:45:17,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450033709] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:45:17,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220559680] [2022-01-18 13:45:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:45:17,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:45:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:45:17,584 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 13:45:17,657 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 13:45:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:45:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:45:17,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:45:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:45:17,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:45:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:45:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220559680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:45:18,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:45:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-01-18 13:45:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005981019] [2022-01-18 13:45:18,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:45:18,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:45:18,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:45:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:45:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:45:18,112 INFO L87 Difference]: Start difference. First operand 169576 states and 784118 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 13:45:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:45:19,607 INFO L93 Difference]: Finished difference Result 71915 states and 343342 transitions. [2022-01-18 13:45:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 13:45:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 74 [2022-01-18 13:45:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:45:19,608 INFO L225 Difference]: With dead ends: 71915 [2022-01-18 13:45:19,608 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:45:19,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2022-01-18 13:45:19,609 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 682 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:45:19,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1014 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:45:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:45:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:45:19,610 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 13:45:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:45:19,610 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-01-18 13:45:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:45:19,610 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:45:19,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 13:45:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:45:19,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:45:19,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:45:19,652 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 13:45:19,843 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,SelfDestructingSolverStorable26 [2022-01-18 13:45:19,844 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-18 13:45:19,844 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:45:19,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:45:19,845 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 13:45:19,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:45:19,845 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 105 transitions, 254 flow [2022-01-18 13:45:21,791 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80390 states, 80389 states have (on average 5.234410180497331) internal successors, (420789), 80389 states have internal predecessors, (420789), 0 states have call successors, (0), 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 13:45:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 80390 states, 80389 states have (on average 5.234410180497331) internal successors, (420789), 80389 states have internal predecessors, (420789), 0 states have call successors, (0), 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 13:45:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 13:45:21,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:45:21,974 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 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 13:45:21,974 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:45:21,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:45:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1415162462, now seen corresponding path program 1 times [2022-01-18 13:45:21,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:45:21,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453033763] [2022-01-18 13:45:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:45:21,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:45:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:45:21,991 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:45:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:45:22,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:45:22,005 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:45:22,005 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:45:22,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 13:45:22,005 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:45:22,005 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:45:22,005 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:45:22,005 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-18 13:45:22,013 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,013 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,013 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,013 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,014 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,015 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,016 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,017 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,018 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,019 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,020 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,021 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,022 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe salethreadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,023 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe salethreadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,024 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe salethreadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe |salethreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,025 WARN L322 ript$VariableManager]: TermVariabe salethreadThread5of5ForFork0_~_numberOfSeatsSold~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:45:22,027 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-18 13:45:22,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:45:22,028 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 13:45:22,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:45:22,029 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 110 places, 117 transitions, 294 flow [2022-01-18 13:47:13,452 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2453594 states, 2453529 states have (on average 6.175343352371217) internal successors, (15151384), 2453593 states have internal predecessors, (15151384), 0 states have call successors, (0), 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 13:47:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 2453594 states, 2453529 states have (on average 6.175343352371217) internal successors, (15151384), 2453593 states have internal predecessors, (15151384), 0 states have call successors, (0), 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 13:47:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 13:47:20,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:20,542 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] [2022-01-18 13:47:20,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:47:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash -84083018, now seen corresponding path program 1 times [2022-01-18 13:47:20,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:20,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842874009] [2022-01-18 13:47:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:20,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:20,584 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 13:47:20,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842874009] [2022-01-18 13:47:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842874009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:20,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:47:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5481405] [2022-01-18 13:47:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:47:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:47:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:47:39,083 INFO L87 Difference]: Start difference. First operand has 2453594 states, 2453529 states have (on average 6.175343352371217) internal successors, (15151384), 2453593 states have internal predecessors, (15151384), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)