/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 18:32:54,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 18:32:54,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 18:32:54,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-06 18:32:54,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-06 18:32:54,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-06 18:32:54,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-06 18:32:54,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-06 18:32:54,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-06 18:32:54,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-06 18:32:54,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-06 18:32:54,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-06 18:32:54,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 18:32:54,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 18:32:54,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 18:32:54,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 18:32:54,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 18:32:54,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 18:32:54,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 18:32:54,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 18:32:54,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 18:32:54,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 18:32:54,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 18:32:54,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 18:32:54,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 18:32:54,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-06 18:32:54,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-06 18:32:54,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-06 18:32:54,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-06 18:32:54,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-06 18:32:54,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-06 18:32:54,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-06 18:32:54,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-06 18:32:54,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 18:32:54,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 18:32:54,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 18:32:54,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-08-06 18:32:54,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 18:32:54,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 18:32:54,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 18:32:54,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 18:32:54,617 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 18:32:54,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 18:32:54,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 18:32:54,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 18:32:54,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 18:32:54,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 18:32:54,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 18:32:54,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 18:32:54,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 18:32:54,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 18:32:54,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 18:32:54,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 18:32:54,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 18:32:54,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 18:32:54,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 18:32:54,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 18:32:54,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 18:32:54,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 18:32:54,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 18:32:54,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 18:32:54,622 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 18:32:54,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 18:32:54,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 18:32:54,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 18:32:54,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 18:32:54,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 18:32:54,955 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 18:32:54,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2021-08-06 18:32:55,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b670cc/02d3ee263adf4b4fb66fcb6d371d951f/FLAGaeb287c44 [2021-08-06 18:32:55,516 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 18:32:55,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2021-08-06 18:32:55,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b670cc/02d3ee263adf4b4fb66fcb6d371d951f/FLAGaeb287c44 [2021-08-06 18:32:56,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b670cc/02d3ee263adf4b4fb66fcb6d371d951f [2021-08-06 18:32:56,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 18:32:56,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 18:32:56,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 18:32:56,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 18:32:56,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 18:32:56,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199149df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56, skipping insertion in model container [2021-08-06 18:32:56,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 18:32:56,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 18:32:56,478 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-08-06 18:32:56,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 18:32:56,512 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 18:32:56,590 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-08-06 18:32:56,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 18:32:56,666 INFO L208 MainTranslator]: Completed translation [2021-08-06 18:32:56,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56 WrapperNode [2021-08-06 18:32:56,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 18:32:56,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 18:32:56,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 18:32:56,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 18:32:56,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 18:32:56,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 18:32:56,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 18:32:56,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 18:32:56,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 18:32:56,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 18:32:56,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 18:32:56,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 18:32:56,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (1/1) ... [2021-08-06 18:32:56,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 18:32:56,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:32:56,786 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) [2021-08-06 18:32:56,787 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 [2021-08-06 18:32:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 18:32:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-06 18:32:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 18:32:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 18:32:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 18:32:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-06 18:32:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-06 18:32:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 18:32:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-06 18:32:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-06 18:32:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 18:32:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 18:32:56,819 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 18:32:57,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 18:32:57,153 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-06 18:32:57,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 06:32:57 BoogieIcfgContainer [2021-08-06 18:32:57,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 18:32:57,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 18:32:57,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 18:32:57,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 18:32:57,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 06:32:56" (1/3) ... [2021-08-06 18:32:57,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663ab2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 06:32:57, skipping insertion in model container [2021-08-06 18:32:57,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:32:56" (2/3) ... [2021-08-06 18:32:57,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663ab2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 06:32:57, skipping insertion in model container [2021-08-06 18:32:57,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 06:32:57" (3/3) ... [2021-08-06 18:32:57,161 INFO L111 eAbstractionObserver]: Analyzing ICFG sigma.i [2021-08-06 18:32:57,165 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 18:32:57,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 18:32:57,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 18:32:57,165 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 18:32:57,185 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,185 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,185 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,185 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,185 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,186 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,186 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,186 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,186 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,186 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,187 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,187 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,189 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,189 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,189 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,189 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:32:57,198 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-06 18:32:57,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:32:57,233 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:32:57,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:32:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 239 states have (on average 1.3598326359832635) internal successors, (325), 282 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:32:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:32:59,544 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:32:59,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:32:59,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:32:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:32:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash -841959694, now seen corresponding path program 1 times [2021-08-06 18:32:59,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:32:59,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778972082] [2021-08-06 18:32:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:32:59,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:32:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:32:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:32:59,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:32:59,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778972082] [2021-08-06 18:32:59,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778972082] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:32:59,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:32:59,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:32:59,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954172130] [2021-08-06 18:32:59,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:32:59,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:32:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:32:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:32:59,733 INFO L87 Difference]: Start difference. First operand has 283 states, 239 states have (on average 1.3598326359832635) internal successors, (325), 282 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:32:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:32:59,750 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2021-08-06 18:32:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:32:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:32:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:32:59,759 INFO L225 Difference]: With dead ends: 278 [2021-08-06 18:32:59,759 INFO L226 Difference]: Without dead ends: 153 [2021-08-06 18:32:59,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:32:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-06 18:32:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-08-06 18:32:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:32:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-08-06 18:32:59,794 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 43 [2021-08-06 18:32:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:32:59,794 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-08-06 18:32:59,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:32:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-08-06 18:32:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:32:59,795 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:32:59,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:32:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 18:32:59,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:32:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:32:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash -122769069, now seen corresponding path program 1 times [2021-08-06 18:32:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:32:59,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165551688] [2021-08-06 18:32:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:32:59,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:32:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:32:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:32:59,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:32:59,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165551688] [2021-08-06 18:32:59,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165551688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:32:59,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:32:59,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:32:59,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576457398] [2021-08-06 18:32:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:32:59,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:32:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:32:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:32:59,972 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:00,027 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-08-06 18:33:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:33:00,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:00,028 INFO L225 Difference]: With dead ends: 109 [2021-08-06 18:33:00,028 INFO L226 Difference]: Without dead ends: 109 [2021-08-06 18:33:00,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-06 18:33:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-08-06 18:33:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.102803738317757) internal successors, (118), 108 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2021-08-06 18:33:00,036 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 43 [2021-08-06 18:33:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:00,036 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2021-08-06 18:33:00,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2021-08-06 18:33:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 18:33:00,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:00,038 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:00,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 18:33:00,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:00,039 INFO L82 PathProgramCache]: Analyzing trace with hash 528863551, now seen corresponding path program 1 times [2021-08-06 18:33:00,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:00,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540720788] [2021-08-06 18:33:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:00,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:00,076 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 18:33:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:00,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 18:33:00,140 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 18:33:00,141 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:33:00,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:33:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 18:33:00,152 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-06 18:33:00,152 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-08-06 18:33:00,162 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,163 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,163 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,163 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,164 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,164 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,164 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,165 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,165 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,165 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,165 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,165 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,166 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,166 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,166 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,166 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,168 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,168 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,168 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,168 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,168 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,169 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,169 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,169 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,174 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,175 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,175 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,175 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:00,183 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-06 18:33:00,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:33:00,193 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:33:00,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:33:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1292 states have (on average 1.556501547987616) internal successors, (2011), 1532 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:09,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:09,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:09,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1394294570, now seen corresponding path program 1 times [2021-08-06 18:33:09,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:09,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680590075] [2021-08-06 18:33:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:09,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:09,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:09,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680590075] [2021-08-06 18:33:09,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680590075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:09,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:09,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:33:09,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603828023] [2021-08-06 18:33:09,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:33:09,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:33:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:09,358 INFO L87 Difference]: Start difference. First operand has 1533 states, 1292 states have (on average 1.556501547987616) internal successors, (2011), 1532 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:09,376 INFO L93 Difference]: Finished difference Result 1498 states and 1909 transitions. [2021-08-06 18:33:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:33:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:09,383 INFO L225 Difference]: With dead ends: 1498 [2021-08-06 18:33:09,383 INFO L226 Difference]: Without dead ends: 756 [2021-08-06 18:33:09,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-08-06 18:33:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-08-06 18:33:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 739 states have (on average 1.4736129905277402) internal successors, (1089), 755 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1089 transitions. [2021-08-06 18:33:09,439 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1089 transitions. Word has length 43 [2021-08-06 18:33:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:09,439 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1089 transitions. [2021-08-06 18:33:09,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1089 transitions. [2021-08-06 18:33:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:09,444 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:09,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:09,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 18:33:09,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash -675103945, now seen corresponding path program 1 times [2021-08-06 18:33:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:09,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016684747] [2021-08-06 18:33:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:09,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:09,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:09,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016684747] [2021-08-06 18:33:09,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016684747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:09,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:09,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:33:09,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188085635] [2021-08-06 18:33:09,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:33:09,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:33:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:09,550 INFO L87 Difference]: Start difference. First operand 756 states and 1089 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:09,597 INFO L93 Difference]: Finished difference Result 568 states and 791 transitions. [2021-08-06 18:33:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:33:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:09,601 INFO L225 Difference]: With dead ends: 568 [2021-08-06 18:33:09,601 INFO L226 Difference]: Without dead ends: 568 [2021-08-06 18:33:09,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-08-06 18:33:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 549. [2021-08-06 18:33:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 537 states have (on average 1.4227188081936686) internal successors, (764), 548 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 764 transitions. [2021-08-06 18:33:09,623 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 764 transitions. Word has length 43 [2021-08-06 18:33:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:09,623 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 764 transitions. [2021-08-06 18:33:09,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 764 transitions. [2021-08-06 18:33:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-06 18:33:09,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:09,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:09,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 18:33:09,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:09,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1755131890, now seen corresponding path program 1 times [2021-08-06 18:33:09,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:09,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474525472] [2021-08-06 18:33:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:09,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:09,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:09,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474525472] [2021-08-06 18:33:09,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474525472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:09,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:09,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 18:33:09,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718728630] [2021-08-06 18:33:09,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 18:33:09,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 18:33:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:33:09,818 INFO L87 Difference]: Start difference. First operand 549 states and 764 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:09,940 INFO L93 Difference]: Finished difference Result 634 states and 896 transitions. [2021-08-06 18:33:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 18:33:09,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-06 18:33:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:09,947 INFO L225 Difference]: With dead ends: 634 [2021-08-06 18:33:09,947 INFO L226 Difference]: Without dead ends: 634 [2021-08-06 18:33:09,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 18:33:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-08-06 18:33:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 560. [2021-08-06 18:33:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 548 states have (on average 1.427007299270073) internal successors, (782), 559 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 782 transitions. [2021-08-06 18:33:09,970 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 782 transitions. Word has length 71 [2021-08-06 18:33:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:09,971 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 782 transitions. [2021-08-06 18:33:09,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 782 transitions. [2021-08-06 18:33:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-06 18:33:09,973 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:09,973 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:09,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 18:33:09,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:09,974 INFO L82 PathProgramCache]: Analyzing trace with hash -889774585, now seen corresponding path program 1 times [2021-08-06 18:33:09,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:09,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467612731] [2021-08-06 18:33:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:09,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:10,001 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 18:33:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:10,035 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 18:33:10,036 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 18:33:10,036 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:33:10,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:33:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 18:33:10,037 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-06 18:33:10,037 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-08-06 18:33:10,044 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,045 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,046 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,047 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,048 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,050 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,051 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,051 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,051 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,051 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,053 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,053 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,053 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,053 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:10,058 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-06 18:33:10,059 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:33:10,060 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:33:10,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:33:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 8713 states, 7429 states have (on average 1.7750706689998654) internal successors, (13187), 8712 states have internal predecessors, (13187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:21,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:21,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:21,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2082560672, now seen corresponding path program 1 times [2021-08-06 18:33:21,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:21,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940251642] [2021-08-06 18:33:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:21,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:21,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:21,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940251642] [2021-08-06 18:33:21,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940251642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:21,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:21,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:33:21,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150186495] [2021-08-06 18:33:21,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:33:21,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:33:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:21,472 INFO L87 Difference]: Start difference. First operand has 8713 states, 7429 states have (on average 1.7750706689998654) internal successors, (13187), 8712 states have internal predecessors, (13187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:21,560 INFO L93 Difference]: Finished difference Result 8498 states and 12521 transitions. [2021-08-06 18:33:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:33:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:21,585 INFO L225 Difference]: With dead ends: 8498 [2021-08-06 18:33:21,586 INFO L226 Difference]: Without dead ends: 4503 [2021-08-06 18:33:21,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-08-06 18:33:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4503. [2021-08-06 18:33:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 4386 states have (on average 1.707250341997264) internal successors, (7488), 4502 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 7488 transitions. [2021-08-06 18:33:21,705 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 7488 transitions. Word has length 43 [2021-08-06 18:33:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:21,707 INFO L470 AbstractCegarLoop]: Abstraction has 4503 states and 7488 transitions. [2021-08-06 18:33:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 7488 transitions. [2021-08-06 18:33:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:21,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:21,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:21,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 18:33:21,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash 285609313, now seen corresponding path program 1 times [2021-08-06 18:33:21,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:21,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763680817] [2021-08-06 18:33:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:21,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:21,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763680817] [2021-08-06 18:33:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763680817] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:21,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:21,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:33:21,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785935526] [2021-08-06 18:33:21,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:33:21,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:33:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:21,785 INFO L87 Difference]: Start difference. First operand 4503 states and 7488 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:21,849 INFO L93 Difference]: Finished difference Result 3611 states and 5853 transitions. [2021-08-06 18:33:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:33:21,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:21,865 INFO L225 Difference]: With dead ends: 3611 [2021-08-06 18:33:21,865 INFO L226 Difference]: Without dead ends: 3611 [2021-08-06 18:33:21,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-08-06 18:33:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3477. [2021-08-06 18:33:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3477 states, 3385 states have (on average 1.6632200886262924) internal successors, (5630), 3476 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5630 transitions. [2021-08-06 18:33:21,940 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5630 transitions. Word has length 43 [2021-08-06 18:33:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:21,942 INFO L470 AbstractCegarLoop]: Abstraction has 3477 states and 5630 transitions. [2021-08-06 18:33:21,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5630 transitions. [2021-08-06 18:33:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-06 18:33:21,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:21,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:21,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 18:33:21,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:21,944 INFO L82 PathProgramCache]: Analyzing trace with hash -882227779, now seen corresponding path program 1 times [2021-08-06 18:33:21,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:21,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029994137] [2021-08-06 18:33:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:21,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:22,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:22,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029994137] [2021-08-06 18:33:22,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029994137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:22,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:22,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 18:33:22,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381113649] [2021-08-06 18:33:22,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 18:33:22,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 18:33:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:33:22,064 INFO L87 Difference]: Start difference. First operand 3477 states and 5630 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:22,157 INFO L93 Difference]: Finished difference Result 4157 states and 6960 transitions. [2021-08-06 18:33:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 18:33:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-06 18:33:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:22,174 INFO L225 Difference]: With dead ends: 4157 [2021-08-06 18:33:22,174 INFO L226 Difference]: Without dead ends: 4157 [2021-08-06 18:33:22,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 18:33:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-08-06 18:33:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3568. [2021-08-06 18:33:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3476 states have (on average 1.6763521288837744) internal successors, (5827), 3567 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5827 transitions. [2021-08-06 18:33:22,251 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5827 transitions. Word has length 71 [2021-08-06 18:33:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:22,251 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 5827 transitions. [2021-08-06 18:33:22,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5827 transitions. [2021-08-06 18:33:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-06 18:33:22,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:22,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:22,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 18:33:22,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:22,257 INFO L82 PathProgramCache]: Analyzing trace with hash 614320200, now seen corresponding path program 1 times [2021-08-06 18:33:22,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:22,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214369010] [2021-08-06 18:33:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:22,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:22,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:22,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214369010] [2021-08-06 18:33:22,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214369010] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:22,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361113254] [2021-08-06 18:33:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:22,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:33:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:33:22,368 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) [2021-08-06 18:33:22,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-06 18:33:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:22,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-06 18:33:22,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 18:33:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:23,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361113254] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:23,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 18:33:23,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-06 18:33:23,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241627235] [2021-08-06 18:33:23,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 18:33:23,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 18:33:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 18:33:23,102 INFO L87 Difference]: Start difference. First operand 3568 states and 5827 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:23,215 INFO L93 Difference]: Finished difference Result 3677 states and 6012 transitions. [2021-08-06 18:33:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 18:33:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 78 [2021-08-06 18:33:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:23,230 INFO L225 Difference]: With dead ends: 3677 [2021-08-06 18:33:23,230 INFO L226 Difference]: Without dead ends: 3677 [2021-08-06 18:33:23,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-08-06 18:33:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-08-06 18:33:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3562. [2021-08-06 18:33:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3470 states have (on average 1.6760806916426514) internal successors, (5816), 3561 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 5816 transitions. [2021-08-06 18:33:23,303 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 5816 transitions. Word has length 78 [2021-08-06 18:33:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:23,304 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 5816 transitions. [2021-08-06 18:33:23,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 5816 transitions. [2021-08-06 18:33:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-06 18:33:23,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:23,307 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:23,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-06 18:33:23,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-06 18:33:23,521 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:23,522 INFO L82 PathProgramCache]: Analyzing trace with hash -454319010, now seen corresponding path program 1 times [2021-08-06 18:33:23,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:23,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178497682] [2021-08-06 18:33:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:23,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:23,550 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 18:33:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:23,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 18:33:23,624 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 18:33:23,624 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:33:23,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:33:23,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 18:33:23,624 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-06 18:33:23,625 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-08-06 18:33:23,640 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,640 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,642 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,644 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,647 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,647 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,649 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,649 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,650 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,653 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,653 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,654 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,655 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,655 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,655 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:23,662 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 18:33:23,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:33:23,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:33:23,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:33:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 50193 states, 43342 states have (on average 1.8371787181025334) internal successors, (79627), 50192 states have internal predecessors, (79627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:46,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:46,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:46,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash 261354768, now seen corresponding path program 1 times [2021-08-06 18:33:46,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:46,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183736050] [2021-08-06 18:33:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:46,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:46,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:46,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183736050] [2021-08-06 18:33:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183736050] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:46,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:46,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:33:46,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091606158] [2021-08-06 18:33:46,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:33:46,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:33:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:47,053 INFO L87 Difference]: Start difference. First operand has 50193 states, 43342 states have (on average 1.8371787181025334) internal successors, (79627), 50192 states have internal predecessors, (79627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:47,439 INFO L93 Difference]: Finished difference Result 48898 states and 75327 transitions. [2021-08-06 18:33:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:33:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:47,542 INFO L225 Difference]: With dead ends: 48898 [2021-08-06 18:33:47,542 INFO L226 Difference]: Without dead ends: 27582 [2021-08-06 18:33:47,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:33:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27582 states. [2021-08-06 18:33:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27582 to 27582. [2021-08-06 18:33:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27582 states, 26785 states have (on average 1.869516520440545) internal successors, (50075), 27581 states have internal predecessors, (50075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27582 states to 27582 states and 50075 transitions. [2021-08-06 18:33:48,691 INFO L78 Accepts]: Start accepts. Automaton has 27582 states and 50075 transitions. Word has length 43 [2021-08-06 18:33:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:48,691 INFO L470 AbstractCegarLoop]: Abstraction has 27582 states and 50075 transitions. [2021-08-06 18:33:48,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27582 states and 50075 transitions. [2021-08-06 18:33:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:33:48,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:48,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:48,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 18:33:48,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1535596591, now seen corresponding path program 1 times [2021-08-06 18:33:48,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:48,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763747094] [2021-08-06 18:33:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:48,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:33:48,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:48,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763747094] [2021-08-06 18:33:48,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763747094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:48,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:48,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:33:48,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907687036] [2021-08-06 18:33:48,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:33:48,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:48,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:33:48,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:48,744 INFO L87 Difference]: Start difference. First operand 27582 states and 50075 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:49,178 INFO L93 Difference]: Finished difference Result 23270 states and 41086 transitions. [2021-08-06 18:33:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:33:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:33:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:49,248 INFO L225 Difference]: With dead ends: 23270 [2021-08-06 18:33:49,248 INFO L226 Difference]: Without dead ends: 23270 [2021-08-06 18:33:49,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:33:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23270 states. [2021-08-06 18:33:49,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23270 to 22461. [2021-08-06 18:33:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22461 states, 21789 states have (on average 1.8175226031483775) internal successors, (39602), 22460 states have internal predecessors, (39602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22461 states to 22461 states and 39602 transitions. [2021-08-06 18:33:49,782 INFO L78 Accepts]: Start accepts. Automaton has 22461 states and 39602 transitions. Word has length 43 [2021-08-06 18:33:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:49,782 INFO L470 AbstractCegarLoop]: Abstraction has 22461 states and 39602 transitions. [2021-08-06 18:33:49,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22461 states and 39602 transitions. [2021-08-06 18:33:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-06 18:33:49,783 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:49,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:49,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 18:33:49,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -713951080, now seen corresponding path program 1 times [2021-08-06 18:33:49,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:49,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183812489] [2021-08-06 18:33:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:49,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:49,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:49,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183812489] [2021-08-06 18:33:49,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183812489] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:33:49,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:33:49,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 18:33:49,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441490855] [2021-08-06 18:33:49,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 18:33:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 18:33:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:33:49,868 INFO L87 Difference]: Start difference. First operand 22461 states and 39602 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:50,035 INFO L93 Difference]: Finished difference Result 27296 states and 50950 transitions. [2021-08-06 18:33:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 18:33:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-06 18:33:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:50,228 INFO L225 Difference]: With dead ends: 27296 [2021-08-06 18:33:50,228 INFO L226 Difference]: Without dead ends: 27296 [2021-08-06 18:33:50,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 18:33:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2021-08-06 18:33:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 23132. [2021-08-06 18:33:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23132 states, 22460 states have (on average 1.8434105075690115) internal successors, (41403), 23131 states have internal predecessors, (41403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23132 states to 23132 states and 41403 transitions. [2021-08-06 18:33:50,701 INFO L78 Accepts]: Start accepts. Automaton has 23132 states and 41403 transitions. Word has length 71 [2021-08-06 18:33:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:50,701 INFO L470 AbstractCegarLoop]: Abstraction has 23132 states and 41403 transitions. [2021-08-06 18:33:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 23132 states and 41403 transitions. [2021-08-06 18:33:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-06 18:33:50,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:50,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:50,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 18:33:50,703 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1841483645, now seen corresponding path program 1 times [2021-08-06 18:33:50,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379566323] [2021-08-06 18:33:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:50,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:50,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:50,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379566323] [2021-08-06 18:33:50,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379566323] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:50,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632937194] [2021-08-06 18:33:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:50,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:33:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:33:50,781 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) [2021-08-06 18:33:50,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-06 18:33:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-06 18:33:50,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 18:33:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:51,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632937194] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:51,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 18:33:51,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-06 18:33:51,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815690583] [2021-08-06 18:33:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 18:33:51,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 18:33:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 18:33:51,699 INFO L87 Difference]: Start difference. First operand 23132 states and 41403 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:51,893 INFO L93 Difference]: Finished difference Result 23916 states and 42849 transitions. [2021-08-06 18:33:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 18:33:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 78 [2021-08-06 18:33:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:51,947 INFO L225 Difference]: With dead ends: 23916 [2021-08-06 18:33:51,948 INFO L226 Difference]: Without dead ends: 23916 [2021-08-06 18:33:51,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-08-06 18:33:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23916 states. [2021-08-06 18:33:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23916 to 23126. [2021-08-06 18:33:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23126 states, 22454 states have (on average 1.8434132003206556) internal successors, (41392), 23125 states have internal predecessors, (41392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23126 states to 23126 states and 41392 transitions. [2021-08-06 18:33:52,401 INFO L78 Accepts]: Start accepts. Automaton has 23126 states and 41392 transitions. Word has length 78 [2021-08-06 18:33:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:52,401 INFO L470 AbstractCegarLoop]: Abstraction has 23126 states and 41392 transitions. [2021-08-06 18:33:52,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 23126 states and 41392 transitions. [2021-08-06 18:33:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-08-06 18:33:52,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:52,406 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:52,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-06 18:33:52,628 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,SelfDestructingSolverStorable15 [2021-08-06 18:33:52,629 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 186407719, now seen corresponding path program 1 times [2021-08-06 18:33:52,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:52,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280718644] [2021-08-06 18:33:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:52,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-06 18:33:52,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:33:52,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280718644] [2021-08-06 18:33:52,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280718644] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:52,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36082225] [2021-08-06 18:33:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:52,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:33:52,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:33:52,717 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) [2021-08-06 18:33:52,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-06 18:33:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:33:52,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-06 18:33:52,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 18:33:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:33:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36082225] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:33:53,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 18:33:53,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-08-06 18:33:53,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449583014] [2021-08-06 18:33:53,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 18:33:53,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:33:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 18:33:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-06 18:33:53,742 INFO L87 Difference]: Start difference. First operand 23126 states and 41392 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:33:53,953 INFO L93 Difference]: Finished difference Result 16202 states and 26858 transitions. [2021-08-06 18:33:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 18:33:53,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 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 93 [2021-08-06 18:33:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:33:53,985 INFO L225 Difference]: With dead ends: 16202 [2021-08-06 18:33:53,985 INFO L226 Difference]: Without dead ends: 16158 [2021-08-06 18:33:53,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-08-06 18:33:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16158 states. [2021-08-06 18:33:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16158 to 15879. [2021-08-06 18:33:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15879 states, 15607 states have (on average 1.6883449734093676) internal successors, (26350), 15878 states have internal predecessors, (26350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15879 states to 15879 states and 26350 transitions. [2021-08-06 18:33:54,246 INFO L78 Accepts]: Start accepts. Automaton has 15879 states and 26350 transitions. Word has length 93 [2021-08-06 18:33:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:33:54,246 INFO L470 AbstractCegarLoop]: Abstraction has 15879 states and 26350 transitions. [2021-08-06 18:33:54,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:33:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15879 states and 26350 transitions. [2021-08-06 18:33:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-06 18:33:54,255 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:33:54,255 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:33:54,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-06 18:33:54,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:33:54,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:33:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:33:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash -612291736, now seen corresponding path program 1 times [2021-08-06 18:33:54,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:33:54,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027144216] [2021-08-06 18:33:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:33:54,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:33:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:54,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 18:33:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:33:54,620 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 18:33:54,620 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 18:33:54,620 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:33:54,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:33:54,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 18:33:54,621 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-06 18:33:54,621 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-08-06 18:33:54,630 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,630 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,630 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,630 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,630 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,631 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,632 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,633 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,634 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,635 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,636 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,636 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,636 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,636 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,637 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,637 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,638 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,638 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,639 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,639 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,639 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,639 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,640 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,640 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,640 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,640 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,641 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,641 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,642 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,642 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:33:54,647 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-06 18:33:54,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:33:54,649 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:33:54,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:34:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 291073 states, 254247 states have (on average 1.9824776693530308) internal successors, (504039), 291072 states have internal predecessors, (504039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:34:42,667 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:34:42,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:34:42,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:34:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:34:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1732022310, now seen corresponding path program 1 times [2021-08-06 18:34:42,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:34:42,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615661005] [2021-08-06 18:34:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:34:42,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:34:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:34:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:34:42,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:34:42,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615661005] [2021-08-06 18:34:42,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615661005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:34:42,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:34:42,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:34:42,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270456153] [2021-08-06 18:34:42,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:34:42,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:34:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:34:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:34:43,020 INFO L87 Difference]: Start difference. First operand has 291073 states, 254247 states have (on average 1.9824776693530308) internal successors, (504039), 291072 states have internal predecessors, (504039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:34:46,296 INFO L93 Difference]: Finished difference Result 283298 states and 476780 transitions. [2021-08-06 18:34:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:34:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:34:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:34:46,934 INFO L225 Difference]: With dead ends: 283298 [2021-08-06 18:34:46,935 INFO L226 Difference]: Without dead ends: 168957 [2021-08-06 18:34:46,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:34:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168957 states. [2021-08-06 18:34:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168957 to 168957. [2021-08-06 18:34:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168957 states, 163680 states have (on average 2.0453629032258065) internal successors, (334785), 168956 states have internal predecessors, (334785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168957 states to 168957 states and 334785 transitions. [2021-08-06 18:34:51,365 INFO L78 Accepts]: Start accepts. Automaton has 168957 states and 334785 transitions. Word has length 43 [2021-08-06 18:34:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:34:51,365 INFO L470 AbstractCegarLoop]: Abstraction has 168957 states and 334785 transitions. [2021-08-06 18:34:51,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 168957 states and 334785 transitions. [2021-08-06 18:34:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-06 18:34:51,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:34:51,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:34:51,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 18:34:51,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:34:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:34:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1843754361, now seen corresponding path program 1 times [2021-08-06 18:34:51,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:34:51,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45132505] [2021-08-06 18:34:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:34:51,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:34:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:34:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:34:51,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:34:51,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45132505] [2021-08-06 18:34:51,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45132505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:34:51,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:34:51,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:34:51,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316728567] [2021-08-06 18:34:51,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:34:51,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:34:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:34:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:34:51,402 INFO L87 Difference]: Start difference. First operand 168957 states and 334785 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:34:52,396 INFO L93 Difference]: Finished difference Result 148045 states and 285053 transitions. [2021-08-06 18:34:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:34:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-06 18:34:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:34:53,110 INFO L225 Difference]: With dead ends: 148045 [2021-08-06 18:34:53,111 INFO L226 Difference]: Without dead ends: 148045 [2021-08-06 18:34:53,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:34:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148045 states. [2021-08-06 18:34:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148045 to 143361. [2021-08-06 18:34:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143361 states, 138709 states have (on average 1.98893366688535) internal successors, (275883), 143360 states have internal predecessors, (275883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143361 states to 143361 states and 275883 transitions. [2021-08-06 18:34:56,739 INFO L78 Accepts]: Start accepts. Automaton has 143361 states and 275883 transitions. Word has length 43 [2021-08-06 18:34:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:34:56,739 INFO L470 AbstractCegarLoop]: Abstraction has 143361 states and 275883 transitions. [2021-08-06 18:34:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 143361 states and 275883 transitions. [2021-08-06 18:34:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-06 18:34:56,740 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:34:56,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:34:56,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 18:34:56,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:34:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:34:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1446572089, now seen corresponding path program 1 times [2021-08-06 18:34:56,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:34:56,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851038772] [2021-08-06 18:34:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:34:56,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:34:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:34:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:34:56,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:34:56,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851038772] [2021-08-06 18:34:56,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851038772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:34:56,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:34:56,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 18:34:56,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308815912] [2021-08-06 18:34:56,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 18:34:56,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:34:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 18:34:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:34:56,799 INFO L87 Difference]: Start difference. First operand 143361 states and 275883 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:34:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:34:57,874 INFO L93 Difference]: Finished difference Result 175951 states and 365324 transitions. [2021-08-06 18:34:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 18:34:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-06 18:34:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:34:58,713 INFO L225 Difference]: With dead ends: 175951 [2021-08-06 18:34:58,714 INFO L226 Difference]: Without dead ends: 175951 [2021-08-06 18:34:58,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 18:34:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175951 states. [2021-08-06 18:35:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175951 to 148012. [2021-08-06 18:35:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148012 states, 143360 states have (on average 2.0284109933035714) internal successors, (290793), 148011 states have internal predecessors, (290793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148012 states to 148012 states and 290793 transitions. [2021-08-06 18:35:02,671 INFO L78 Accepts]: Start accepts. Automaton has 148012 states and 290793 transitions. Word has length 71 [2021-08-06 18:35:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:35:02,672 INFO L470 AbstractCegarLoop]: Abstraction has 148012 states and 290793 transitions. [2021-08-06 18:35:02,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 148012 states and 290793 transitions. [2021-08-06 18:35:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-06 18:35:02,673 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:35:02,673 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:35:02,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 18:35:02,673 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:35:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:35:02,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1800838386, now seen corresponding path program 1 times [2021-08-06 18:35:02,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:35:02,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157930638] [2021-08-06 18:35:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:35:02,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:35:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:35:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:35:02,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:35:02,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157930638] [2021-08-06 18:35:02,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157930638] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:35:02,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361483839] [2021-08-06 18:35:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:35:02,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:35:02,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:35:02,741 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) [2021-08-06 18:35:02,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-06 18:35:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:35:02,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-06 18:35:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 18:35:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:35:03,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361483839] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:35:03,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 18:35:03,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-06 18:35:03,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133412003] [2021-08-06 18:35:03,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 18:35:03,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:35:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 18:35:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 18:35:03,522 INFO L87 Difference]: Start difference. First operand 148012 states and 290793 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:35:04,798 INFO L93 Difference]: Finished difference Result 152671 states and 299925 transitions. [2021-08-06 18:35:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 18:35:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 78 [2021-08-06 18:35:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:35:05,373 INFO L225 Difference]: With dead ends: 152671 [2021-08-06 18:35:05,373 INFO L226 Difference]: Without dead ends: 152671 [2021-08-06 18:35:05,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-08-06 18:35:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152671 states. [2021-08-06 18:35:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152671 to 148006. [2021-08-06 18:35:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148006 states, 143354 states have (on average 2.028419158167892) internal successors, (290782), 148005 states have internal predecessors, (290782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148006 states to 148006 states and 290782 transitions. [2021-08-06 18:35:09,836 INFO L78 Accepts]: Start accepts. Automaton has 148006 states and 290782 transitions. Word has length 78 [2021-08-06 18:35:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:35:09,836 INFO L470 AbstractCegarLoop]: Abstraction has 148006 states and 290782 transitions. [2021-08-06 18:35:09,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 148006 states and 290782 transitions. [2021-08-06 18:35:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-08-06 18:35:09,841 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:35:09,841 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:35:09,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-06 18:35:10,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:35:10,057 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:35:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:35:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1106529992, now seen corresponding path program 1 times [2021-08-06 18:35:10,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:35:10,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318018289] [2021-08-06 18:35:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:35:10,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:35:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:35:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-06 18:35:10,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:35:10,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318018289] [2021-08-06 18:35:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318018289] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:35:10,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703524906] [2021-08-06 18:35:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:35:10,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 18:35:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:35:10,629 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) [2021-08-06 18:35:10,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-06 18:35:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:35:10,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-06 18:35:10,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 18:35:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-06 18:35:11,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703524906] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 18:35:11,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 18:35:11,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-08-06 18:35:11,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397959875] [2021-08-06 18:35:11,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 18:35:11,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:35:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 18:35:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-06 18:35:11,671 INFO L87 Difference]: Start difference. First operand 148006 states and 290782 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:35:12,391 INFO L93 Difference]: Finished difference Result 106048 states and 191163 transitions. [2021-08-06 18:35:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 18:35:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 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 93 [2021-08-06 18:35:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:35:12,637 INFO L225 Difference]: With dead ends: 106048 [2021-08-06 18:35:12,637 INFO L226 Difference]: Without dead ends: 105988 [2021-08-06 18:35:12,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-08-06 18:35:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105988 states. [2021-08-06 18:35:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105988 to 103618. [2021-08-06 18:35:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103618 states, 101591 states have (on average 1.838440413028713) internal successors, (186769), 103617 states have internal predecessors, (186769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103618 states to 103618 states and 186769 transitions. [2021-08-06 18:35:15,386 INFO L78 Accepts]: Start accepts. Automaton has 103618 states and 186769 transitions. Word has length 93 [2021-08-06 18:35:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:35:15,387 INFO L470 AbstractCegarLoop]: Abstraction has 103618 states and 186769 transitions. [2021-08-06 18:35:15,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 18:35:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 103618 states and 186769 transitions. [2021-08-06 18:35:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-06 18:35:15,426 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:35:15,426 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:35:15,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-06 18:35:15,627 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,SelfDestructingSolverStorable22 [2021-08-06 18:35:15,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 18:35:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:35:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash 322569213, now seen corresponding path program 1 times [2021-08-06 18:35:15,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:35:15,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661783836] [2021-08-06 18:35:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:35:15,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:35:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:35:15,657 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 18:35:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 18:35:15,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 18:35:15,715 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 18:35:15,715 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:35:15,715 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:35:15,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 18:35:15,716 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-06 18:35:15,716 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-08-06 18:35:15,727 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,727 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,728 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,729 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,730 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,731 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,732 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,733 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,735 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,735 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,735 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,735 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,736 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,736 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,736 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,736 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,737 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,737 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,737 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,737 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,738 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,739 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,739 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,739 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,740 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,740 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,740 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,740 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:35:15,746 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-08-06 18:35:15,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:35:15,747 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:35:15,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.