/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:07:29,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:07:29,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:07:29,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:07:29,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:07:29,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:07:29,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:07:29,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:07:29,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:07:29,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:07:29,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:07:29,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:07:29,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:07:29,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:07:29,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:07:29,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:07:29,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:07:29,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:07:29,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:07:29,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:07:29,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:07:29,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:07:29,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:07:29,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:07:29,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 18:07:29,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:07:29,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:07:29,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:07:29,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 18:07:29,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:07:29,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:07:29,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:07:29,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:07:29,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:07:29,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:07:29,557 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:07:29,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:07:29,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:07:29,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:07:29,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:07:29,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:07:29,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:07:29,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:07:29,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:07:29,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:07:29,560 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:07:29,560 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:07:29,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:07:29,561 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:07:29,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:07:29,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:07:29,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:07:29,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:07:29,789 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:07:29,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2022-03-15 18:07:29,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243331d0/b00d6b7c980646e39e06fea7709377d3/FLAGa8218cdde [2022-03-15 18:07:30,279 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:07:30,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2022-03-15 18:07:30,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243331d0/b00d6b7c980646e39e06fea7709377d3/FLAGa8218cdde [2022-03-15 18:07:30,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243331d0/b00d6b7c980646e39e06fea7709377d3 [2022-03-15 18:07:30,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:07:30,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:07:30,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:07:30,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:07:30,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:07:30,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfbfa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30, skipping insertion in model container [2022-03-15 18:07:30,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:07:30,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:07:30,603 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-nondet/nondet-array-1.i[30035,30048] [2022-03-15 18:07:30,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:07:30,624 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:07:30,653 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-nondet/nondet-array-1.i[30035,30048] [2022-03-15 18:07:30,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:07:30,683 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:07:30,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30 WrapperNode [2022-03-15 18:07:30,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:07:30,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:07:30,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:07:30,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:07:30,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,731 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-03-15 18:07:30,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:07:30,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:07:30,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:07:30,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:07:30,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:07:30,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:07:30,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:07:30,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:07:30,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (1/1) ... [2022-03-15 18:07:30,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:07:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:30,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 18:07:30,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-03-15 18:07:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:07:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:07:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:07:30,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:07:30,820 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 18:07:30,892 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:07:30,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:07:31,020 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:07:31,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:07:31,025 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 18:07:31,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:07:31 BoogieIcfgContainer [2022-03-15 18:07:31,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:07:31,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:07:31,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:07:31,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:07:31,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:07:30" (1/3) ... [2022-03-15 18:07:31,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1335f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:07:31, skipping insertion in model container [2022-03-15 18:07:31,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:07:30" (2/3) ... [2022-03-15 18:07:31,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1335f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:07:31, skipping insertion in model container [2022-03-15 18:07:31,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:07:31" (3/3) ... [2022-03-15 18:07:31,031 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2022-03-15 18:07:31,034 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:07:31,034 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:07:31,034 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:07:31,034 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:07:31,056 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,056 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,056 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,056 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,057 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,058 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,058 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,058 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,061 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,062 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,062 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,062 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,062 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:31,065 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 18:07:31,091 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:31,095 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:31,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:31,102 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:31,107 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 88 transitions, 184 flow [2022-03-15 18:07:31,109 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 88 transitions, 184 flow [2022-03-15 18:07:31,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 184 flow [2022-03-15 18:07:31,140 INFO L129 PetriNetUnfolder]: 12/126 cut-off events. [2022-03-15 18:07:31,140 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-03-15 18:07:31,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 126 events. 12/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 71. Up to 4 conditions per place. [2022-03-15 18:07:31,143 INFO L116 LiptonReduction]: Number of co-enabled transitions 440 [2022-03-15 18:07:33,057 INFO L131 LiptonReduction]: Checked pairs total: 426 [2022-03-15 18:07:33,057 INFO L133 LiptonReduction]: Total number of compositions: 88 [2022-03-15 18:07:33,062 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2022-03-15 18:07:33,070 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:33,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:33,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:33,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash 10329147, now seen corresponding path program 1 times [2022-03-15 18:07:33,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:33,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843197270] [2022-03-15 18:07:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:33,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:33,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:33,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843197270] [2022-03-15 18:07:33,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843197270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:33,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:33,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:33,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [611534546] [2022-03-15 18:07:33,224 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:33,226 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:33,231 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:33,232 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:33,233 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:33,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:33,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:33,248 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:33,277 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2022-03-15 18:07:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:07:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:07:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:33,283 INFO L225 Difference]: With dead ends: 26 [2022-03-15 18:07:33,283 INFO L226 Difference]: Without dead ends: 23 [2022-03-15 18:07:33,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:33,287 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 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 [2022-03-15 18:07:33,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-15 18:07:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-15 18:07:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2022-03-15 18:07:33,310 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2022-03-15 18:07:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:33,311 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2022-03-15 18:07:33,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2022-03-15 18:07:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 18:07:33,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:33,313 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-03-15 18:07:33,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:07:33,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1351166643, now seen corresponding path program 1 times [2022-03-15 18:07:33,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:33,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581133204] [2022-03-15 18:07:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:33,353 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:07:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:33,384 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:07:33,384 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:07:33,385 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:07:33,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:07:33,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:07:33,388 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 18:07:33,388 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:07:33,388 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,394 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,395 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,396 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,397 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,398 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,398 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,398 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,398 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:33,399 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 18:07:33,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:33,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:33,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:33,402 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:33,402 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 95 transitions, 208 flow [2022-03-15 18:07:33,402 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 95 transitions, 208 flow [2022-03-15 18:07:33,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 208 flow [2022-03-15 18:07:33,424 INFO L129 PetriNetUnfolder]: 23/217 cut-off events. [2022-03-15 18:07:33,424 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-03-15 18:07:33,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 217 events. 23/217 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 513 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2022-03-15 18:07:33,427 INFO L116 LiptonReduction]: Number of co-enabled transitions 1040 [2022-03-15 18:07:35,167 INFO L131 LiptonReduction]: Checked pairs total: 2834 [2022-03-15 18:07:35,167 INFO L133 LiptonReduction]: Total number of compositions: 89 [2022-03-15 18:07:35,168 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2022-03-15 18:07:35,184 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 241 states, 232 states have (on average 2.3706896551724137) internal successors, (550), 240 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 232 states have (on average 2.3706896551724137) internal successors, (550), 240 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:35,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:35,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:35,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 16206443, now seen corresponding path program 1 times [2022-03-15 18:07:35,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:35,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151894741] [2022-03-15 18:07:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:35,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:35,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151894741] [2022-03-15 18:07:35,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151894741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:35,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:35,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:35,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [193444748] [2022-03-15 18:07:35,233 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:35,233 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:35,234 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:35,234 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:35,234 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:35,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:35,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:35,236 INFO L87 Difference]: Start difference. First operand has 241 states, 232 states have (on average 2.3706896551724137) internal successors, (550), 240 states have internal predecessors, (550), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:35,263 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2022-03-15 18:07:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:07:35,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:07:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:35,266 INFO L225 Difference]: With dead ends: 241 [2022-03-15 18:07:35,267 INFO L226 Difference]: Without dead ends: 216 [2022-03-15 18:07:35,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:35,267 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:35,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-15 18:07:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-03-15 18:07:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 2.3412322274881516) internal successors, (494), 215 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2022-03-15 18:07:35,284 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2022-03-15 18:07:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:35,284 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2022-03-15 18:07:35,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2022-03-15 18:07:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:07:35,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:35,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:35,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 18:07:35,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 503659156, now seen corresponding path program 1 times [2022-03-15 18:07:35,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:35,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519721294] [2022-03-15 18:07:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:35,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:35,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:35,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519721294] [2022-03-15 18:07:35,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519721294] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:35,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282317044] [2022-03-15 18:07:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:35,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:35,352 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) [2022-03-15 18:07:35,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 18:07:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:35,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:07:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:35,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:35,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282317044] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:35,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:35,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 18:07:35,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [128225333] [2022-03-15 18:07:35,520 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:35,520 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:35,521 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:07:35,521 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:35,522 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:07:35,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:07:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:35,523 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:35,570 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2022-03-15 18:07:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 18:07:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:35,572 INFO L225 Difference]: With dead ends: 203 [2022-03-15 18:07:35,572 INFO L226 Difference]: Without dead ends: 203 [2022-03-15 18:07:35,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:35,572 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:35,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 11 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-03-15 18:07:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-03-15 18:07:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 2.1761658031088085) internal successors, (420), 196 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2022-03-15 18:07:35,585 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2022-03-15 18:07:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:35,586 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2022-03-15 18:07:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2022-03-15 18:07:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 18:07:35,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:35,586 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-03-15 18:07:35,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 18:07:35,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:35,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1780241178, now seen corresponding path program 1 times [2022-03-15 18:07:35,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:35,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032316419] [2022-03-15 18:07:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:35,839 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:07:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:35,883 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:07:35,884 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:07:35,884 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:07:35,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:07:35,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 18:07:35,884 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 18:07:35,884 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:07:35,885 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-03-15 18:07:35,902 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,903 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,904 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,905 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,906 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,907 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,908 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:35,909 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 18:07:35,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:35,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:35,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:35,911 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:35,911 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 102 transitions, 234 flow [2022-03-15 18:07:35,912 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 102 transitions, 234 flow [2022-03-15 18:07:35,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 102 transitions, 234 flow [2022-03-15 18:07:35,958 INFO L129 PetriNetUnfolder]: 45/383 cut-off events. [2022-03-15 18:07:35,958 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-03-15 18:07:35,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 383 events. 45/383 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1182 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 225. Up to 16 conditions per place. [2022-03-15 18:07:35,969 INFO L116 LiptonReduction]: Number of co-enabled transitions 1680 [2022-03-15 18:07:37,690 INFO L131 LiptonReduction]: Checked pairs total: 5000 [2022-03-15 18:07:37,691 INFO L133 LiptonReduction]: Total number of compositions: 87 [2022-03-15 18:07:37,691 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2022-03-15 18:07:37,742 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1149 states, 1132 states have (on average 2.9681978798586575) internal successors, (3360), 1148 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 1149 states, 1132 states have (on average 2.9681978798586575) internal successors, (3360), 1148 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:37,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:37,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:37,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 22245498, now seen corresponding path program 1 times [2022-03-15 18:07:37,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:37,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811465694] [2022-03-15 18:07:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:37,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:37,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811465694] [2022-03-15 18:07:37,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811465694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:37,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:37,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:37,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214923036] [2022-03-15 18:07:37,788 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:37,788 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:37,789 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:37,789 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:37,789 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:37,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:37,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:37,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:37,792 INFO L87 Difference]: Start difference. First operand has 1149 states, 1132 states have (on average 2.9681978798586575) internal successors, (3360), 1148 states have internal predecessors, (3360), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:37,847 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2022-03-15 18:07:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:07:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:07:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:37,856 INFO L225 Difference]: With dead ends: 1149 [2022-03-15 18:07:37,856 INFO L226 Difference]: Without dead ends: 1024 [2022-03-15 18:07:37,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:37,857 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:37,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:37,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-03-15 18:07:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2022-03-15 18:07:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1015 states have (on average 2.9645320197044334) internal successors, (3009), 1023 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) [2022-03-15 18:07:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2022-03-15 18:07:37,941 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2022-03-15 18:07:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2022-03-15 18:07:37,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2022-03-15 18:07:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:07:37,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:37,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:37,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 18:07:37,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash -372259833, now seen corresponding path program 1 times [2022-03-15 18:07:37,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:37,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955712038] [2022-03-15 18:07:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:38,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:38,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955712038] [2022-03-15 18:07:38,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955712038] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:38,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441170082] [2022-03-15 18:07:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:38,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:38,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:38,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 18:07:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:38,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:07:38,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:38,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:38,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441170082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:38,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:38,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 18:07:38,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1019447704] [2022-03-15 18:07:38,133 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:38,133 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:38,134 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:07:38,134 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:38,134 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:07:38,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:07:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:38,135 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:38,179 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2022-03-15 18:07:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 18:07:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:38,184 INFO L225 Difference]: With dead ends: 1015 [2022-03-15 18:07:38,184 INFO L226 Difference]: Without dead ends: 1015 [2022-03-15 18:07:38,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:38,185 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:38,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 14 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-15 18:07:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2022-03-15 18:07:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 969 states have (on average 2.804953560371517) internal successors, (2718), 976 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2022-03-15 18:07:38,205 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2022-03-15 18:07:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:38,206 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2022-03-15 18:07:38,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2022-03-15 18:07:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:07:38,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:38,207 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-03-15 18:07:38,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:38,421 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,SelfDestructingSolverStorable6 [2022-03-15 18:07:38,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1760230923, now seen corresponding path program 1 times [2022-03-15 18:07:38,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:38,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621032034] [2022-03-15 18:07:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:38,445 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:07:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:38,479 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:07:38,479 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:07:38,479 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:07:38,479 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:07:38,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 18:07:38,480 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 18:07:38,480 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:07:38,480 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-03-15 18:07:38,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,493 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,494 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,495 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,496 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,499 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,499 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:38,500 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 18:07:38,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:38,501 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:38,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:38,501 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:38,502 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 109 transitions, 262 flow [2022-03-15 18:07:38,502 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 109 transitions, 262 flow [2022-03-15 18:07:38,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 262 flow [2022-03-15 18:07:38,546 INFO L129 PetriNetUnfolder]: 91/701 cut-off events. [2022-03-15 18:07:38,546 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-03-15 18:07:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 701 events. 91/701 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3068 event pairs, 6 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 403. Up to 32 conditions per place. [2022-03-15 18:07:38,554 INFO L116 LiptonReduction]: Number of co-enabled transitions 2400 [2022-03-15 18:07:40,032 INFO L131 LiptonReduction]: Checked pairs total: 7902 [2022-03-15 18:07:40,033 INFO L133 LiptonReduction]: Total number of compositions: 90 [2022-03-15 18:07:40,033 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2022-03-15 18:07:40,188 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5481 states, 5448 states have (on average 3.58920704845815) internal successors, (19554), 5480 states have internal predecessors, (19554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 5481 states, 5448 states have (on average 3.58920704845815) internal successors, (19554), 5480 states have internal predecessors, (19554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:40,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:40,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:40,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash 28583939, now seen corresponding path program 1 times [2022-03-15 18:07:40,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:40,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095811158] [2022-03-15 18:07:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:40,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:40,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:40,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095811158] [2022-03-15 18:07:40,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095811158] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:40,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:40,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:40,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1173738331] [2022-03-15 18:07:40,220 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:40,220 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:40,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:40,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:40,220 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:40,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:40,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:40,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:40,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:40,231 INFO L87 Difference]: Start difference. First operand has 5481 states, 5448 states have (on average 3.58920704845815) internal successors, (19554), 5480 states have internal predecessors, (19554), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:40,301 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2022-03-15 18:07:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:07:40,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:07:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:40,329 INFO L225 Difference]: With dead ends: 5481 [2022-03-15 18:07:40,329 INFO L226 Difference]: Without dead ends: 4856 [2022-03-15 18:07:40,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:40,330 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:40,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-03-15 18:07:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2022-03-15 18:07:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4839 states have (on average 3.601570572432321) internal successors, (17428), 4855 states have internal predecessors, (17428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2022-03-15 18:07:40,453 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2022-03-15 18:07:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:40,454 INFO L470 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2022-03-15 18:07:40,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2022-03-15 18:07:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:07:40,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:40,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:40,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 18:07:40,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1954103763, now seen corresponding path program 1 times [2022-03-15 18:07:40,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:40,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578858005] [2022-03-15 18:07:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:40,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:40,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578858005] [2022-03-15 18:07:40,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578858005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:40,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196233355] [2022-03-15 18:07:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:40,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:40,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:40,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 18:07:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:40,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:07:40,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:40,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:40,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196233355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:40,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:40,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 18:07:40,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [240806734] [2022-03-15 18:07:40,702 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:40,702 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:40,703 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:07:40,703 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:40,703 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:40,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:07:40,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:07:40,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:40,704 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:40,810 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2022-03-15 18:07:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 18:07:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:40,834 INFO L225 Difference]: With dead ends: 4995 [2022-03-15 18:07:40,835 INFO L226 Difference]: Without dead ends: 4995 [2022-03-15 18:07:40,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:40,835 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:40,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 24 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2022-03-15 18:07:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2022-03-15 18:07:40,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 4781 states have (on average 3.4469776197448234) internal successors, (16480), 4796 states have internal predecessors, (16480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2022-03-15 18:07:40,951 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2022-03-15 18:07:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:40,951 INFO L470 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2022-03-15 18:07:40,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2022-03-15 18:07:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:07:40,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:40,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:40,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:41,188 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 [2022-03-15 18:07:41,188 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:41,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash 304003326, now seen corresponding path program 1 times [2022-03-15 18:07:41,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:41,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102561710] [2022-03-15 18:07:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:41,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:41,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102561710] [2022-03-15 18:07:41,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102561710] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:41,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873164959] [2022-03-15 18:07:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:41,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:41,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 18:07:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:41,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:07:41,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:41,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:41,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873164959] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:41,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:41,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-03-15 18:07:41,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1978526890] [2022-03-15 18:07:41,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:41,423 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:41,425 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2022-03-15 18:07:41,425 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:41,481 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:07:41,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:07:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:41,482 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:41,546 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2022-03-15 18:07:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 16 [2022-03-15 18:07:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:41,565 INFO L225 Difference]: With dead ends: 4793 [2022-03-15 18:07:41,565 INFO L226 Difference]: Without dead ends: 4793 [2022-03-15 18:07:41,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:41,566 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:41,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:07:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2022-03-15 18:07:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2022-03-15 18:07:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4777 states have (on average 3.447561230898053) internal successors, (16469), 4792 states have internal predecessors, (16469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2022-03-15 18:07:41,712 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2022-03-15 18:07:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:41,712 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2022-03-15 18:07:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2022-03-15 18:07:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:07:41,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:41,713 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:41,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:41,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:41,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1209246008, now seen corresponding path program 1 times [2022-03-15 18:07:41,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:41,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025368202] [2022-03-15 18:07:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:41,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:41,940 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:07:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:41,951 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:07:41,952 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:07:41,952 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:07:41,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:07:41,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 18:07:41,952 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-03-15 18:07:41,952 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:07:41,952 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,959 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,960 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,961 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,962 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,963 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,965 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,966 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:41,967 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-03-15 18:07:41,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:41,968 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:41,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:41,969 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:41,969 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 116 transitions, 292 flow [2022-03-15 18:07:41,969 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 116 transitions, 292 flow [2022-03-15 18:07:41,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 116 transitions, 292 flow [2022-03-15 18:07:42,067 INFO L129 PetriNetUnfolder]: 189/1327 cut-off events. [2022-03-15 18:07:42,067 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-03-15 18:07:42,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 1327 events. 189/1327 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7565 event pairs, 23 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 746. Up to 80 conditions per place. [2022-03-15 18:07:42,083 INFO L116 LiptonReduction]: Number of co-enabled transitions 3200 [2022-03-15 18:07:44,119 INFO L131 LiptonReduction]: Checked pairs total: 11192 [2022-03-15 18:07:44,119 INFO L133 LiptonReduction]: Total number of compositions: 93 [2022-03-15 18:07:44,129 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2022-03-15 18:07:44,820 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26309 states, 26244 states have (on average 4.217192501143119) internal successors, (110676), 26308 states have internal predecessors, (110676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 26309 states, 26244 states have (on average 4.217192501143119) internal successors, (110676), 26308 states have internal predecessors, (110676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:44,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:44,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:44,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 35233318, now seen corresponding path program 1 times [2022-03-15 18:07:44,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:44,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336937633] [2022-03-15 18:07:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:44,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:44,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336937633] [2022-03-15 18:07:44,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336937633] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:44,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:44,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:44,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460388666] [2022-03-15 18:07:44,897 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:44,897 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:44,897 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:44,897 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:44,897 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:44,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:44,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:44,943 INFO L87 Difference]: Start difference. First operand has 26309 states, 26244 states have (on average 4.217192501143119) internal successors, (110676), 26308 states have internal predecessors, (110676), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:45,361 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2022-03-15 18:07:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:07:45,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:07:45,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:45,542 INFO L225 Difference]: With dead ends: 26309 [2022-03-15 18:07:45,543 INFO L226 Difference]: Without dead ends: 23184 [2022-03-15 18:07:45,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:45,543 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:45,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:07:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2022-03-15 18:07:46,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2022-03-15 18:07:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23184 states, 23151 states have (on average 4.240637553453414) internal successors, (98175), 23183 states have internal predecessors, (98175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2022-03-15 18:07:46,470 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2022-03-15 18:07:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:46,471 INFO L470 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2022-03-15 18:07:46,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2022-03-15 18:07:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:07:46,471 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:46,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:46,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 18:07:46,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1849415861, now seen corresponding path program 1 times [2022-03-15 18:07:46,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:46,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245676762] [2022-03-15 18:07:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:46,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:46,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245676762] [2022-03-15 18:07:46,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245676762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:46,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105605770] [2022-03-15 18:07:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:46,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:46,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:46,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:46,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 18:07:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:46,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:07:46,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:46,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:46,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105605770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:46,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:46,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 18:07:46,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [487853527] [2022-03-15 18:07:46,823 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:46,824 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:46,824 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:07:46,824 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:46,824 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:07:46,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:07:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:46,825 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:47,348 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2022-03-15 18:07:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 18:07:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:47,506 INFO L225 Difference]: With dead ends: 24543 [2022-03-15 18:07:47,507 INFO L226 Difference]: Without dead ends: 24543 [2022-03-15 18:07:47,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:07:47,507 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 95 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:47,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 20 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:07:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2022-03-15 18:07:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2022-03-15 18:07:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23577 states, 23545 states have (on average 4.091654279040136) internal successors, (96338), 23576 states have internal predecessors, (96338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2022-03-15 18:07:48,469 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2022-03-15 18:07:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:48,469 INFO L470 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2022-03-15 18:07:48,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2022-03-15 18:07:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:07:48,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:48,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:48,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:48,693 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,SelfDestructingSolverStorable13 [2022-03-15 18:07:48,693 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -418848071, now seen corresponding path program 1 times [2022-03-15 18:07:48,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:48,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755254921] [2022-03-15 18:07:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:48,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:48,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755254921] [2022-03-15 18:07:48,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755254921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:48,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873811722] [2022-03-15 18:07:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:48,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:48,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:48,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:48,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 18:07:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:48,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:07:48,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:48,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:07:48,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873811722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:48,952 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:48,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-03-15 18:07:48,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178476559] [2022-03-15 18:07:48,952 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:48,954 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:48,957 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2022-03-15 18:07:48,957 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:49,000 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [197262#(<= (+ 5 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~n~0#1|)] [2022-03-15 18:07:49,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:07:49,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:07:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:07:49,001 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:49,351 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2022-03-15 18:07:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:07:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 16 [2022-03-15 18:07:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:49,454 INFO L225 Difference]: With dead ends: 23573 [2022-03-15 18:07:49,454 INFO L226 Difference]: Without dead ends: 23573 [2022-03-15 18:07:49,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:07:49,455 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:49,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:07:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2022-03-15 18:07:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2022-03-15 18:07:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23573 states, 23541 states have (on average 4.091882247992864) internal successors, (96327), 23572 states have internal predecessors, (96327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2022-03-15 18:07:50,523 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2022-03-15 18:07:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:50,524 INFO L470 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2022-03-15 18:07:50,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2022-03-15 18:07:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 18:07:50,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:50,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:50,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:50,730 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,SelfDestructingSolverStorable14 [2022-03-15 18:07:50,731 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1557716350, now seen corresponding path program 1 times [2022-03-15 18:07:50,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:50,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115780445] [2022-03-15 18:07:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:07:50,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:50,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115780445] [2022-03-15 18:07:50,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115780445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:50,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571563010] [2022-03-15 18:07:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:50,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:50,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 18:07:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 18:07:50,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:07:51,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:07:51,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571563010] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:51,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:51,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-15 18:07:51,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1984958544] [2022-03-15 18:07:51,079 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:51,081 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:51,083 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2022-03-15 18:07:51,083 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:51,146 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:51,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:07:51,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:51,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:07:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:07:51,147 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:51,460 INFO L93 Difference]: Finished difference Result 21826 states and 86349 transitions. [2022-03-15 18:07:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:07:51,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2022-03-15 18:07:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:51,556 INFO L225 Difference]: With dead ends: 21826 [2022-03-15 18:07:51,557 INFO L226 Difference]: Without dead ends: 21826 [2022-03-15 18:07:51,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-03-15 18:07:51,557 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 147 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:51,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 43 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:07:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21826 states. [2022-03-15 18:07:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21826 to 21826. [2022-03-15 18:07:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21826 states, 21799 states have (on average 3.961145006651681) internal successors, (86349), 21825 states have internal predecessors, (86349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2022-03-15 18:07:52,487 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 20 [2022-03-15 18:07:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:52,489 INFO L470 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2022-03-15 18:07:52,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2022-03-15 18:07:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 18:07:52,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:52,495 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:52,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:52,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1946209961, now seen corresponding path program 1 times [2022-03-15 18:07:52,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:52,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504803032] [2022-03-15 18:07:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:52,730 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:07:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:07:52,752 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:07:52,753 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:07:52,754 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:07:52,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:07:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 18:07:52,754 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-15 18:07:52,755 WARN L235 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:07:52,755 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-03-15 18:07:52,762 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,762 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,763 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,763 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,763 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,763 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,764 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,765 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,766 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,767 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,768 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,769 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,770 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,770 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,770 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,770 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,771 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,772 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,773 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,774 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,774 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,774 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,774 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:07:52,775 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-15 18:07:52,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:07:52,777 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:07:52,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:07:52,779 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:07:52,779 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 123 transitions, 324 flow [2022-03-15 18:07:52,780 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 123 transitions, 324 flow [2022-03-15 18:07:52,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 123 transitions, 324 flow [2022-03-15 18:07:52,951 INFO L129 PetriNetUnfolder]: 399/2577 cut-off events. [2022-03-15 18:07:52,952 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-03-15 18:07:52,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2809 conditions, 2577 events. 399/2577 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 18484 event pairs, 72 based on Foata normal form. 0/2178 useless extension candidates. Maximal degree in co-relation 1426. Up to 192 conditions per place. [2022-03-15 18:07:52,988 INFO L116 LiptonReduction]: Number of co-enabled transitions 4080 [2022-03-15 18:07:54,847 INFO L131 LiptonReduction]: Checked pairs total: 16844 [2022-03-15 18:07:54,847 INFO L133 LiptonReduction]: Total number of compositions: 94 [2022-03-15 18:07:54,848 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2022-03-15 18:07:58,908 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 127121 states, 126992 states have (on average 4.8459588005543655) internal successors, (615398), 127120 states have internal predecessors, (615398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 127121 states, 126992 states have (on average 4.8459588005543655) internal successors, (615398), 127120 states have internal predecessors, (615398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:07:59,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:59,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:07:59,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 42129062, now seen corresponding path program 1 times [2022-03-15 18:07:59,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:59,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330096621] [2022-03-15 18:07:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:59,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:59,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:59,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330096621] [2022-03-15 18:07:59,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330096621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:07:59,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:07:59,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:07:59,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1858453170] [2022-03-15 18:07:59,128 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:59,128 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:59,129 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:07:59,129 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:59,129 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:59,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:07:59,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:07:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:07:59,323 INFO L87 Difference]: Start difference. First operand has 127121 states, 126992 states have (on average 4.8459588005543655) internal successors, (615398), 127120 states have internal predecessors, (615398), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:08:01,413 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2022-03-15 18:08:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:08:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:08:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:08:02,298 INFO L225 Difference]: With dead ends: 127121 [2022-03-15 18:08:02,298 INFO L226 Difference]: Without dead ends: 111496 [2022-03-15 18:08:02,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:08:02,301 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:08:02,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:08:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2022-03-15 18:08:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2022-03-15 18:08:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111496 states, 111431 states have (on average 4.877655230591128) internal successors, (543522), 111495 states have internal predecessors, (543522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2022-03-15 18:08:08,019 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2022-03-15 18:08:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:08:08,019 INFO L470 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2022-03-15 18:08:08,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2022-03-15 18:08:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:08:08,020 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:08:08,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:08:08,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 18:08:08,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:08:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:08:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1810746225, now seen corresponding path program 1 times [2022-03-15 18:08:08,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:08:08,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806364933] [2022-03-15 18:08:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:08:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:08,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:08:08,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806364933] [2022-03-15 18:08:08,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806364933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:08:08,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211580723] [2022-03-15 18:08:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:08:08,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:08:08,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 18:08:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:08,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:08:08,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:08:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:08,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:08:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:08,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211580723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:08:08,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:08:08,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 18:08:08,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [987167808] [2022-03-15 18:08:08,186 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:08:08,186 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:08:08,187 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:08:08,187 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:08:08,187 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:08:08,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:08:08,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:08:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:08:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:08:08,188 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:08:10,009 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2022-03-15 18:08:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:08:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 18:08:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:08:10,883 INFO L225 Difference]: With dead ends: 120747 [2022-03-15 18:08:10,883 INFO L226 Difference]: Without dead ends: 120747 [2022-03-15 18:08:10,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:08:10,884 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:08:10,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 32 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:08:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2022-03-15 18:08:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2022-03-15 18:08:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116197 states, 116133 states have (on average 4.734743785142896) internal successors, (549860), 116196 states have internal predecessors, (549860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2022-03-15 18:08:16,560 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2022-03-15 18:08:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:08:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2022-03-15 18:08:16,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2022-03-15 18:08:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:08:16,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:08:16,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:08:16,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 18:08:16,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:16,777 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:08:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:08:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1022320339, now seen corresponding path program 1 times [2022-03-15 18:08:16,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:08:16,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421651636] [2022-03-15 18:08:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:08:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:08:16,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:08:16,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421651636] [2022-03-15 18:08:16,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421651636] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:08:16,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101035480] [2022-03-15 18:08:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:16,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:16,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:08:16,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:08:16,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 18:08:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:16,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:08:16,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:08:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:08:16,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:08:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:08:17,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101035480] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:08:17,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:08:17,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-03-15 18:08:17,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1817682159] [2022-03-15 18:08:17,006 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:08:17,007 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:08:17,009 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2022-03-15 18:08:17,009 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:08:17,038 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:08:17,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:08:17,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:08:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:08:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:08:17,039 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:18,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:08:18,515 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2022-03-15 18:08:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:08:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 16 [2022-03-15 18:08:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:08:20,036 INFO L225 Difference]: With dead ends: 116193 [2022-03-15 18:08:20,036 INFO L226 Difference]: Without dead ends: 116193 [2022-03-15 18:08:20,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:08:20,038 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:08:20,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:08:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2022-03-15 18:08:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2022-03-15 18:08:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116193 states, 116129 states have (on average 4.73481214855893) internal successors, (549849), 116192 states have internal predecessors, (549849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2022-03-15 18:08:26,058 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2022-03-15 18:08:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:08:26,058 INFO L470 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2022-03-15 18:08:26,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2022-03-15 18:08:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 18:08:26,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:08:26,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:08:26,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 18:08:26,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:26,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:08:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:08:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash -716952373, now seen corresponding path program 1 times [2022-03-15 18:08:26,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:08:26,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421316198] [2022-03-15 18:08:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:08:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:08:26,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:08:26,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421316198] [2022-03-15 18:08:26,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421316198] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:08:26,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134707630] [2022-03-15 18:08:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:26,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:08:26,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:08:26,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 18:08:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:26,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 18:08:26,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:08:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:08:26,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:08:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:08:26,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134707630] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:08:26,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:08:26,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-15 18:08:26,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [336220869] [2022-03-15 18:08:26,763 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:08:26,764 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:08:26,766 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 18:08:26,766 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:08:26,817 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:08:26,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:08:26,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:08:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:08:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:08:26,818 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:08:28,020 INFO L93 Difference]: Finished difference Result 109282 states and 500942 transitions. [2022-03-15 18:08:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:08:28,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2022-03-15 18:08:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:08:28,943 INFO L225 Difference]: With dead ends: 109282 [2022-03-15 18:08:28,944 INFO L226 Difference]: Without dead ends: 109282 [2022-03-15 18:08:28,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-03-15 18:08:28,944 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 175 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:08:28,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 49 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:08:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109282 states. [2022-03-15 18:08:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109282 to 109282. [2022-03-15 18:08:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109282 states, 109224 states have (on average 4.586372958324178) internal successors, (500942), 109281 states have internal predecessors, (500942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109282 states to 109282 states and 500942 transitions. [2022-03-15 18:08:33,880 INFO L78 Accepts]: Start accepts. Automaton has 109282 states and 500942 transitions. Word has length 20 [2022-03-15 18:08:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:08:33,880 INFO L470 AbstractCegarLoop]: Abstraction has 109282 states and 500942 transitions. [2022-03-15 18:08:33,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 109282 states and 500942 transitions. [2022-03-15 18:08:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:08:33,950 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:08:33,951 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:08:33,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 18:08:34,171 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,SelfDestructingSolverStorable20 [2022-03-15 18:08:34,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:08:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:08:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1274828574, now seen corresponding path program 1 times [2022-03-15 18:08:34,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:08:34,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383745093] [2022-03-15 18:08:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:08:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:08:34,190 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 18:08:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 18:08:34,216 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 18:08:34,216 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 18:08:34,216 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-03-15 18:08:34,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-15 18:08:34,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-15 18:08:34,217 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-15 18:08:34,217 WARN L235 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-15 18:08:34,217 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-03-15 18:08:34,225 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,226 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,227 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,228 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,229 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,230 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,231 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,232 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,233 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,234 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:08:34,236 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-03-15 18:08:34,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:08:34,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:08:34,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:08:34,238 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:08:34,238 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 130 transitions, 358 flow [2022-03-15 18:08:34,238 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 130 transitions, 358 flow [2022-03-15 18:08:34,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 130 transitions, 358 flow [2022-03-15 18:08:35,150 INFO L129 PetriNetUnfolder]: 849/5091 cut-off events. [2022-03-15 18:08:35,151 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-03-15 18:08:35,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 5091 events. 849/5091 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 43791 event pairs, 201 based on Foata normal form. 0/4306 useless extension candidates. Maximal degree in co-relation 2795. Up to 448 conditions per place. [2022-03-15 18:08:35,206 INFO L116 LiptonReduction]: Number of co-enabled transitions 5040 [2022-03-15 18:08:36,809 INFO L131 LiptonReduction]: Checked pairs total: 19546 [2022-03-15 18:08:36,809 INFO L133 LiptonReduction]: Total number of compositions: 97 [2022-03-15 18:08:36,810 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow [2022-03-15 18:09:04,424 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 617869 states, 617612 states have (on average 5.473455826635493) internal successors, (3380472), 617868 states have internal predecessors, (3380472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 617869 states, 617612 states have (on average 5.473455826635493) internal successors, (3380472), 617868 states have internal predecessors, (3380472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-03-15 18:09:05,766 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:09:05,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-03-15 18:09:05,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:09:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:09:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 49334349, now seen corresponding path program 1 times [2022-03-15 18:09:05,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:09:05,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358091999] [2022-03-15 18:09:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:09:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:09:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:09:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:05,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:09:05,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358091999] [2022-03-15 18:09:05,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358091999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:09:05,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:09:05,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:09:05,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1049361368] [2022-03-15 18:09:05,810 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:09:05,810 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:09:05,811 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2022-03-15 18:09:05,811 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:09:05,811 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:09:05,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:09:05,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:09:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:09:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:09:07,161 INFO L87 Difference]: Start difference. First operand has 617869 states, 617612 states have (on average 5.473455826635493) internal successors, (3380472), 617868 states have internal predecessors, (3380472), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:09:20,230 INFO L93 Difference]: Finished difference Result 617869 states and 3380471 transitions. [2022-03-15 18:09:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:09:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-03-15 18:09:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:09:32,393 INFO L225 Difference]: With dead ends: 617869 [2022-03-15 18:09:32,393 INFO L226 Difference]: Without dead ends: 539744 [2022-03-15 18:09:32,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:09:32,407 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:09:32,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:09:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539744 states.