/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:51:44,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:51:44,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:51:44,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:51:44,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 13:51:44,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 13:51:44,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 13:51:44,727 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.epf [2021-08-06 13:51:44,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:51:44,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:51:44,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:51:44,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:51:44,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:51:44,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:51:44,760 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:51:44,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:51:44,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:51:44,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:51:44,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:51:44,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:51:44,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:51:44,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:51:44,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:51:44,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:51:45,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:51:45,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:51:45,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:51:45,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:51:45,082 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:51:45,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-08-06 13:51:45,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ece3ee8/07755f48a5c5412ba5a66867fb3572cf/FLAG123c9ec5b [2021-08-06 13:51:45,632 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:51:45,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-08-06 13:51:45,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ece3ee8/07755f48a5c5412ba5a66867fb3572cf/FLAG123c9ec5b [2021-08-06 13:51:45,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ece3ee8/07755f48a5c5412ba5a66867fb3572cf [2021-08-06 13:51:45,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:51:45,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:51:45,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:51:45,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:51:45,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:51:45,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:45,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c46c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45, skipping insertion in model container [2021-08-06 13:51:45,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:45,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:51:45,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:51:45,800 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-wmm/safe032_tso.oepc.i[950,963] [2021-08-06 13:51:45,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:51:45,932 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:51:45,940 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-wmm/safe032_tso.oepc.i[950,963] [2021-08-06 13:51:45,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:51:45,985 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:51:45,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45 WrapperNode [2021-08-06 13:51:45,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:51:45,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:51:45,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:51:45,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:51:45,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:51:46,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:51:46,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:51:46,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:51:46,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:51:46,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:51:46,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:51:46,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:51:46,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (1/1) ... [2021-08-06 13:51:46,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:51:46,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:51:46,083 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 13:51:46,113 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 13:51:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:51:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 13:51:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:51:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:51:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 13:51:46,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 13:51:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 13:51:46,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 13:51:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 13:51:46,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 13:51:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:51:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 13:51:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:51:46,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:51:46,144 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 13:51:46,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:51:46,455 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 13:51:46,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:51:46 BoogieIcfgContainer [2021-08-06 13:51:46,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:51:46,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:51:46,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:51:46,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:51:46,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:51:45" (1/3) ... [2021-08-06 13:51:46,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc08f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:51:46, skipping insertion in model container [2021-08-06 13:51:46,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:51:45" (2/3) ... [2021-08-06 13:51:46,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc08f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:51:46, skipping insertion in model container [2021-08-06 13:51:46,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:51:46" (3/3) ... [2021-08-06 13:51:46,462 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2021-08-06 13:51:46,465 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:51:46,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:51:46,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 13:51:46,465 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:51:46,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,521 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,521 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,527 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,527 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,533 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:51:46,537 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 13:51:46,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 13:51:46,584 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 13:51:46,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 13:51:46,594 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-08-06 13:51:46,781 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 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 13:51:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 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 13:51:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 13:51:46,826 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:46,827 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] [2021-08-06 13:51:46,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2015526074, now seen corresponding path program 1 times [2021-08-06 13:51:46,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:46,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93359846] [2021-08-06 13:51:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:46,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:47,370 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 13:51:47,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:47,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93359846] [2021-08-06 13:51:47,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93359846] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:47,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:47,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:51:47,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207678642] [2021-08-06 13:51:47,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:51:47,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:51:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:51:47,428 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:51:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:47,769 INFO L93 Difference]: Finished difference Result 8204 states and 28109 transitions. [2021-08-06 13:51:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:51:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 13:51:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:47,815 INFO L225 Difference]: With dead ends: 8204 [2021-08-06 13:51:47,816 INFO L226 Difference]: Without dead ends: 4700 [2021-08-06 13:51:47,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:51:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2021-08-06 13:51:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4226. [2021-08-06 13:51:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4225 states have (on average 3.2246153846153844) internal successors, (13624), 4225 states have internal predecessors, (13624), 0 states have call successors, (0), 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 13:51:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 13624 transitions. [2021-08-06 13:51:48,105 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 13624 transitions. Word has length 48 [2021-08-06 13:51:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:48,107 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 13624 transitions. [2021-08-06 13:51:48,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:51:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 13624 transitions. [2021-08-06 13:51:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 13:51:48,128 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:48,132 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] [2021-08-06 13:51:48,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:51:48,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1214690695, now seen corresponding path program 1 times [2021-08-06 13:51:48,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:48,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018186602] [2021-08-06 13:51:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:48,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:48,367 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 13:51:48,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:48,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018186602] [2021-08-06 13:51:48,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018186602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:48,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:48,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:51:48,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274221168] [2021-08-06 13:51:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:51:48,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:48,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:51:48,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:51:48,371 INFO L87 Difference]: Start difference. First operand 4226 states and 13624 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:51:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:48,555 INFO L93 Difference]: Finished difference Result 4716 states and 15076 transitions. [2021-08-06 13:51:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:51:48,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-08-06 13:51:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:48,586 INFO L225 Difference]: With dead ends: 4716 [2021-08-06 13:51:48,586 INFO L226 Difference]: Without dead ends: 3320 [2021-08-06 13:51:48,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:51:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-08-06 13:51:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3281. [2021-08-06 13:51:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 3.165243902439024) internal successors, (10382), 3280 states have internal predecessors, (10382), 0 states have call successors, (0), 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 13:51:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 10382 transitions. [2021-08-06 13:51:48,705 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 10382 transitions. Word has length 50 [2021-08-06 13:51:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:48,706 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 10382 transitions. [2021-08-06 13:51:48,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:51:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 10382 transitions. [2021-08-06 13:51:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 13:51:48,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:48,713 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] [2021-08-06 13:51:48,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:51:48,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:48,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1223022908, now seen corresponding path program 1 times [2021-08-06 13:51:48,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:48,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020537115] [2021-08-06 13:51:48,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:48,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:48,934 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 13:51:48,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:48,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020537115] [2021-08-06 13:51:48,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020537115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:48,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:48,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:51:48,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73647880] [2021-08-06 13:51:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:51:48,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:51:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:51:48,936 INFO L87 Difference]: Start difference. First operand 3281 states and 10382 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:51:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:49,203 INFO L93 Difference]: Finished difference Result 4817 states and 15152 transitions. [2021-08-06 13:51:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:51:49,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-08-06 13:51:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:49,220 INFO L225 Difference]: With dead ends: 4817 [2021-08-06 13:51:49,221 INFO L226 Difference]: Without dead ends: 3073 [2021-08-06 13:51:49,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 211.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:51:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-08-06 13:51:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2789. [2021-08-06 13:51:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2788 states have (on average 3.1251793400286942) internal successors, (8713), 2788 states have internal predecessors, (8713), 0 states have call successors, (0), 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 13:51:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 8713 transitions. [2021-08-06 13:51:49,310 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 8713 transitions. Word has length 53 [2021-08-06 13:51:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:49,311 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 8713 transitions. [2021-08-06 13:51:49,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:51:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 8713 transitions. [2021-08-06 13:51:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 13:51:49,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:49,318 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] [2021-08-06 13:51:49,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:51:49,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash 609535178, now seen corresponding path program 1 times [2021-08-06 13:51:49,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:49,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070846911] [2021-08-06 13:51:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:49,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:49,437 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 13:51:49,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:49,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070846911] [2021-08-06 13:51:49,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070846911] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:49,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:49,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:51:49,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218257003] [2021-08-06 13:51:49,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:51:49,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:51:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:51:49,440 INFO L87 Difference]: Start difference. First operand 2789 states and 8713 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:51:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:49,539 INFO L93 Difference]: Finished difference Result 3109 states and 9669 transitions. [2021-08-06 13:51:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:51:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-08-06 13:51:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:49,551 INFO L225 Difference]: With dead ends: 3109 [2021-08-06 13:51:49,551 INFO L226 Difference]: Without dead ends: 2549 [2021-08-06 13:51:49,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:51:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2021-08-06 13:51:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2485. [2021-08-06 13:51:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 3.0841384863123995) internal successors, (7661), 2484 states have internal predecessors, (7661), 0 states have call successors, (0), 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 13:51:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 7661 transitions. [2021-08-06 13:51:49,614 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 7661 transitions. Word has length 53 [2021-08-06 13:51:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:49,615 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 7661 transitions. [2021-08-06 13:51:49,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:51:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 7661 transitions. [2021-08-06 13:51:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 13:51:49,621 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:49,621 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] [2021-08-06 13:51:49,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:51:49,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash 268556107, now seen corresponding path program 1 times [2021-08-06 13:51:49,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:49,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130147196] [2021-08-06 13:51:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:49,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:49,748 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 13:51:49,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:49,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130147196] [2021-08-06 13:51:49,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130147196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:49,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:49,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:51:49,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678005019] [2021-08-06 13:51:49,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:51:49,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:51:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:51:49,751 INFO L87 Difference]: Start difference. First operand 2485 states and 7661 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 13:51:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:49,840 INFO L93 Difference]: Finished difference Result 2982 states and 9073 transitions. [2021-08-06 13:51:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:51:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-08-06 13:51:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:49,862 INFO L225 Difference]: With dead ends: 2982 [2021-08-06 13:51:49,862 INFO L226 Difference]: Without dead ends: 2246 [2021-08-06 13:51:49,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:51:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-08-06 13:51:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2246. [2021-08-06 13:51:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 3.02271714922049) internal successors, (6786), 2245 states have internal predecessors, (6786), 0 states have call successors, (0), 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 13:51:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 6786 transitions. [2021-08-06 13:51:49,934 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 6786 transitions. Word has length 55 [2021-08-06 13:51:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 2246 states and 6786 transitions. [2021-08-06 13:51:49,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 13:51:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 6786 transitions. [2021-08-06 13:51:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 13:51:49,938 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:49,938 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] [2021-08-06 13:51:49,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:51:49,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:49,939 INFO L82 PathProgramCache]: Analyzing trace with hash 871095806, now seen corresponding path program 1 times [2021-08-06 13:51:49,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:49,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841785898] [2021-08-06 13:51:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:49,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:50,077 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 13:51:50,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:50,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841785898] [2021-08-06 13:51:50,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841785898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:50,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:50,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:51:50,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35972917] [2021-08-06 13:51:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:51:50,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:51:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:51:50,079 INFO L87 Difference]: Start difference. First operand 2246 states and 6786 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 13:51:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:50,210 INFO L93 Difference]: Finished difference Result 2177 states and 6401 transitions. [2021-08-06 13:51:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:51:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-08-06 13:51:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:50,216 INFO L225 Difference]: With dead ends: 2177 [2021-08-06 13:51:50,216 INFO L226 Difference]: Without dead ends: 1601 [2021-08-06 13:51:50,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:51:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-08-06 13:51:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2021-08-06 13:51:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 2.88125) internal successors, (4610), 1600 states have internal predecessors, (4610), 0 states have call successors, (0), 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 13:51:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 4610 transitions. [2021-08-06 13:51:50,247 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 4610 transitions. Word has length 56 [2021-08-06 13:51:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:50,248 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 4610 transitions. [2021-08-06 13:51:50,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 13:51:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 4610 transitions. [2021-08-06 13:51:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 13:51:50,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:51:50,252 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] [2021-08-06 13:51:50,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 13:51:50,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:51:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:51:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash 563619741, now seen corresponding path program 1 times [2021-08-06 13:51:50,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:51:50,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112114082] [2021-08-06 13:51:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:51:50,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:51:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:51:50,357 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 13:51:50,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:51:50,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112114082] [2021-08-06 13:51:50,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112114082] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:51:50,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:51:50,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 13:51:50,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538026244] [2021-08-06 13:51:50,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:51:50,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:51:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:51:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:51:50,359 INFO L87 Difference]: Start difference. First operand 1601 states and 4610 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:51:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:51:50,426 INFO L93 Difference]: Finished difference Result 1169 states and 3287 transitions. [2021-08-06 13:51:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 13:51:50,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-08-06 13:51:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:51:50,426 INFO L225 Difference]: With dead ends: 1169 [2021-08-06 13:51:50,426 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 13:51:50,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:51:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 13:51:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 13:51:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:51:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 13:51:50,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-08-06 13:51:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:51:50,428 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 13:51:50,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:51:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 13:51:50,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 13:51:50,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:51:50,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 13:51:50,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 13:51:50,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 13:51:50,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 13:51:50,434 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 13:51:50,434 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 13:51:50,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 01:51:50 BasicIcfg [2021-08-06 13:51:50,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 13:51:50,436 INFO L168 Benchmark]: Toolchain (without parser) took 4780.65 ms. Allocated memory was 176.2 MB in the beginning and 418.4 MB in the end (delta: 242.2 MB). Free memory was 138.2 MB in the beginning and 248.4 MB in the end (delta: -110.2 MB). Peak memory consumption was 132.5 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,436 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 176.2 MB. Free memory was 156.7 MB in the beginning and 156.6 MB in the end (delta: 160.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 13:51:50,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.30 ms. Allocated memory is still 176.2 MB. Free memory was 138.0 MB in the beginning and 149.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 176.2 MB. Free memory was 149.7 MB in the beginning and 147.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,441 INFO L168 Benchmark]: Boogie Preprocessor took 14.76 ms. Allocated memory is still 176.2 MB. Free memory was 147.7 MB in the beginning and 146.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,441 INFO L168 Benchmark]: RCFGBuilder took 425.62 ms. Allocated memory is still 176.2 MB. Free memory was 146.3 MB in the beginning and 123.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,441 INFO L168 Benchmark]: TraceAbstraction took 3977.75 ms. Allocated memory was 176.2 MB in the beginning and 418.4 MB in the end (delta: 242.2 MB). Free memory was 122.6 MB in the beginning and 248.4 MB in the end (delta: -125.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 8.0 GB. [2021-08-06 13:51:50,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 176.2 MB. Free memory was 156.7 MB in the beginning and 156.6 MB in the end (delta: 160.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.30 ms. Allocated memory is still 176.2 MB. Free memory was 138.0 MB in the beginning and 149.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 176.2 MB. Free memory was 149.7 MB in the beginning and 147.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.76 ms. Allocated memory is still 176.2 MB. Free memory was 147.7 MB in the beginning and 146.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 425.62 ms. Allocated memory is still 176.2 MB. Free memory was 146.3 MB in the beginning and 123.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3977.75 ms. Allocated memory was 176.2 MB in the beginning and 418.4 MB in the end (delta: 242.2 MB). Free memory was 122.6 MB in the beginning and 248.4 MB in the end (delta: -125.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3854.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 90.3ms, AutomataDifference: 1374.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 196.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 725 SDtfs, 1107 SDslu, 2327 SDs, 0 SdLazy, 306 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 271.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 774.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 649.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 861 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 215.2ms SatisfiabilityAnalysisTime, 1100.3ms InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 366 ConstructedInterpolants, 0 QuantifiedInterpolants, 1604 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 13:51:50,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...