/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:22:35,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:22:35,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:22:35,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:22:35,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 17:22:35,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 17:22:35,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 17:22:35,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 17:22:35,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 17:22:35,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 17:22:35,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 17:22:35,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 17:22:35,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 17:22:35,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 17:22:35,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 17:22:35,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 17:22:35,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 17:22:35,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:22:35,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:22:35,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:22:35,302 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 [2021-05-21 17:22:35,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:22:35,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:22:35,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:22:35,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:22:35,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:22:35,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:22:35,323 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:22:35,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:22:35,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:22:35,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:22:35,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:22:35,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:22:35,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:22:35,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:22:35,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:22:35,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:22:35,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:22:35,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:22:35,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:22:35,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:22:35,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:22:35,632 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:22:35,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-05-21 17:22:35,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bba1b81/269f09be111b4549a2c5b8e2a5fa61c9/FLAG3ac8d41be [2021-05-21 17:22:36,185 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:22:36,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-05-21 17:22:36,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bba1b81/269f09be111b4549a2c5b8e2a5fa61c9/FLAG3ac8d41be [2021-05-21 17:22:36,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bba1b81/269f09be111b4549a2c5b8e2a5fa61c9 [2021-05-21 17:22:36,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:22:36,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:22:36,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:22:36,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:22:36,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:22:36,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:22:36" (1/1) ... [2021-05-21 17:22:36,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4893db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:36, skipping insertion in model container [2021-05-21 17:22:36,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:22:36" (1/1) ... [2021-05-21 17:22:36,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:22:36,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:22:36,911 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/safe004_tso.oepc.i[950,963] [2021-05-21 17:22:37,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:22:37,086 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:22:37,105 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/safe004_tso.oepc.i[950,963] [2021-05-21 17:22:37,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:22:37,203 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:22:37,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37 WrapperNode [2021-05-21 17:22:37,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:22:37,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:22:37,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:22:37,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:22:37,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:22:37,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:22:37,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:22:37,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:22:37,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... [2021-05-21 17:22:37,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:22:37,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:22:37,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:22:37,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:22:37,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:22:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:22:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:22:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:22:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:22:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:22:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:22:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:22:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:22:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:22:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:22:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:22:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:22:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:22:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:22:37,359 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:22:37,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:22:37,740 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:22:37,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:22:37 BoogieIcfgContainer [2021-05-21 17:22:37,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:22:37,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:22:37,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:22:37,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:22:37,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:22:36" (1/3) ... [2021-05-21 17:22:37,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5d2563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:22:37, skipping insertion in model container [2021-05-21 17:22:37,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:22:37" (2/3) ... [2021-05-21 17:22:37,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5d2563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:22:37, skipping insertion in model container [2021-05-21 17:22:37,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:22:37" (3/3) ... [2021-05-21 17:22:37,751 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2021-05-21 17:22:37,758 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:22:37,758 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:22:37,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:22:37,759 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:22:37,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,799 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,799 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,800 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,800 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,803 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,804 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,805 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:22:37,821 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:22:37,840 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:22:37,861 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:22:37,862 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:22:37,862 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:22:37,862 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:22:37,862 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:22:37,862 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:22:37,862 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:22:37,862 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:22:37,871 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 17:22:38,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 17:22:38,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:38,447 INFO L521 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] [2021-05-21 17:22:38,447 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1833038261, now seen corresponding path program 1 times [2021-05-21 17:22:38,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:38,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746622541] [2021-05-21 17:22:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:38,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:38,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746622541] [2021-05-21 17:22:38,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746622541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:38,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:38,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:22:38,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287335276] [2021-05-21 17:22:38,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:22:38,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:22:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:22:38,985 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 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) [2021-05-21 17:22:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:39,374 INFO L93 Difference]: Finished difference Result 14357 states and 50008 transitions. [2021-05-21 17:22:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 17:22:39,376 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 [2021-05-21 17:22:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:39,421 INFO L225 Difference]: With dead ends: 14357 [2021-05-21 17:22:39,421 INFO L226 Difference]: Without dead ends: 3812 [2021-05-21 17:22:39,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 188.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:22:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-05-21 17:22:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3452. [2021-05-21 17:22:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3451 states have (on average 3.204578383077369) internal successors, (11059), 3451 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 11059 transitions. [2021-05-21 17:22:39,633 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 11059 transitions. Word has length 48 [2021-05-21 17:22:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:39,634 INFO L482 AbstractCegarLoop]: Abstraction has 3452 states and 11059 transitions. [2021-05-21 17:22:39,634 INFO L483 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) [2021-05-21 17:22:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 11059 transitions. [2021-05-21 17:22:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:22:39,641 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:39,641 INFO L521 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] [2021-05-21 17:22:39,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:22:39,642 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1414286899, now seen corresponding path program 1 times [2021-05-21 17:22:39,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:39,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721826653] [2021-05-21 17:22:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:39,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:39,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721826653] [2021-05-21 17:22:39,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721826653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:39,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:39,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:22:39,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686361309] [2021-05-21 17:22:39,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:22:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:22:39,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:22:39,741 INFO L87 Difference]: Start difference. First operand 3452 states and 11059 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:39,907 INFO L93 Difference]: Finished difference Result 4082 states and 13023 transitions. [2021-05-21 17:22:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:22:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-05-21 17:22:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:39,930 INFO L225 Difference]: With dead ends: 4082 [2021-05-21 17:22:39,930 INFO L226 Difference]: Without dead ends: 3110 [2021-05-21 17:22:39,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:22:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-05-21 17:22:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3078. [2021-05-21 17:22:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 3.178420539486513) internal successors, (9780), 3077 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 9780 transitions. [2021-05-21 17:22:40,045 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 9780 transitions. Word has length 52 [2021-05-21 17:22:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:40,046 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 9780 transitions. [2021-05-21 17:22:40,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 9780 transitions. [2021-05-21 17:22:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 17:22:40,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:40,056 INFO L521 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] [2021-05-21 17:22:40,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:22:40,056 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash 490972131, now seen corresponding path program 1 times [2021-05-21 17:22:40,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:40,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339082920] [2021-05-21 17:22:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:40,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:40,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339082920] [2021-05-21 17:22:40,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339082920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:40,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:40,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:22:40,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033596090] [2021-05-21 17:22:40,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:22:40,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:40,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:22:40,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:22:40,273 INFO L87 Difference]: Start difference. First operand 3078 states and 9780 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-05-21 17:22:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:40,443 INFO L93 Difference]: Finished difference Result 4310 states and 13516 transitions. [2021-05-21 17:22:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:22:40,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2021-05-21 17:22:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:40,456 INFO L225 Difference]: With dead ends: 4310 [2021-05-21 17:22:40,457 INFO L226 Difference]: Without dead ends: 2470 [2021-05-21 17:22:40,457 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 175.2ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:22:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-05-21 17:22:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2278. [2021-05-21 17:22:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 3.0443566095740007) internal successors, (6932), 2277 states have internal predecessors, (6932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 6932 transitions. [2021-05-21 17:22:40,521 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 6932 transitions. Word has length 53 [2021-05-21 17:22:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:40,521 INFO L482 AbstractCegarLoop]: Abstraction has 2278 states and 6932 transitions. [2021-05-21 17:22:40,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-05-21 17:22:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 6932 transitions. [2021-05-21 17:22:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:22:40,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:40,526 INFO L521 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] [2021-05-21 17:22:40,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:22:40,526 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash -945022826, now seen corresponding path program 1 times [2021-05-21 17:22:40,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:40,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973740373] [2021-05-21 17:22:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:40,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:40,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973740373] [2021-05-21 17:22:40,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973740373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:40,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:40,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:22:40,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789595321] [2021-05-21 17:22:40,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:22:40,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:22:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:22:40,630 INFO L87 Difference]: Start difference. First operand 2278 states and 6932 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-05-21 17:22:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:40,798 INFO L93 Difference]: Finished difference Result 2558 states and 7766 transitions. [2021-05-21 17:22:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:22:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 [2021-05-21 17:22:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:40,806 INFO L225 Difference]: With dead ends: 2558 [2021-05-21 17:22:40,806 INFO L226 Difference]: Without dead ends: 1333 [2021-05-21 17:22:40,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 17:22:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-05-21 17:22:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-05-21 17:22:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 3.0022522522522523) internal successors, (3999), 1332 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 3999 transitions. [2021-05-21 17:22:40,843 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 3999 transitions. Word has length 55 [2021-05-21 17:22:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:40,844 INFO L482 AbstractCegarLoop]: Abstraction has 1333 states and 3999 transitions. [2021-05-21 17:22:40,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-05-21 17:22:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 3999 transitions. [2021-05-21 17:22:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 17:22:40,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:40,849 INFO L521 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] [2021-05-21 17:22:40,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:22:40,849 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:40,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2078823676, now seen corresponding path program 1 times [2021-05-21 17:22:40,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:40,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350235920] [2021-05-21 17:22:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:41,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:41,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350235920] [2021-05-21 17:22:41,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350235920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:41,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:41,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:22:41,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690107321] [2021-05-21 17:22:41,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:22:41,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:41,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:22:41,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:22:41,010 INFO L87 Difference]: Start difference. First operand 1333 states and 3999 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-05-21 17:22:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:41,115 INFO L93 Difference]: Finished difference Result 1528 states and 4529 transitions. [2021-05-21 17:22:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:22:41,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 [2021-05-21 17:22:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:41,122 INFO L225 Difference]: With dead ends: 1528 [2021-05-21 17:22:41,123 INFO L226 Difference]: Without dead ends: 1168 [2021-05-21 17:22:41,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:22:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-05-21 17:22:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2021-05-21 17:22:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 2.9511568123393315) internal successors, (3444), 1167 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3444 transitions. [2021-05-21 17:22:41,155 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3444 transitions. Word has length 56 [2021-05-21 17:22:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:41,156 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3444 transitions. [2021-05-21 17:22:41,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-05-21 17:22:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3444 transitions. [2021-05-21 17:22:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:22:41,158 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:41,159 INFO L521 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] [2021-05-21 17:22:41,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:22:41,159 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1611481061, now seen corresponding path program 1 times [2021-05-21 17:22:41,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:41,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280333552] [2021-05-21 17:22:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:41,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:41,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280333552] [2021-05-21 17:22:41,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280333552] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:41,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:41,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:22:41,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078149205] [2021-05-21 17:22:41,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:22:41,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:41,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:22:41,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:22:41,296 INFO L87 Difference]: Start difference. First operand 1168 states and 3444 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:41,416 INFO L93 Difference]: Finished difference Result 1060 states and 3024 transitions. [2021-05-21 17:22:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:22:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-05-21 17:22:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:41,427 INFO L225 Difference]: With dead ends: 1060 [2021-05-21 17:22:41,427 INFO L226 Difference]: Without dead ends: 808 [2021-05-21 17:22:41,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:22:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-05-21 17:22:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2021-05-21 17:22:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 2.799256505576208) internal successors, (2259), 807 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2259 transitions. [2021-05-21 17:22:41,445 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2259 transitions. Word has length 57 [2021-05-21 17:22:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:41,445 INFO L482 AbstractCegarLoop]: Abstraction has 808 states and 2259 transitions. [2021-05-21 17:22:41,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:22:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2259 transitions. [2021-05-21 17:22:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 17:22:41,447 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:22:41,447 INFO L521 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] [2021-05-21 17:22:41,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:22:41,447 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:22:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:22:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2015620850, now seen corresponding path program 1 times [2021-05-21 17:22:41,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:22:41,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374174032] [2021-05-21 17:22:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:22:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:22:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:22:41,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:22:41,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374174032] [2021-05-21 17:22:41,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374174032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:22:41,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:22:41,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:22:41,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593577341] [2021-05-21 17:22:41,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:22:41,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:22:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:22:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:22:41,533 INFO L87 Difference]: Start difference. First operand 808 states and 2259 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) [2021-05-21 17:22:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:22:41,622 INFO L93 Difference]: Finished difference Result 511 states and 1368 transitions. [2021-05-21 17:22:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 17:22:41,622 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 [2021-05-21 17:22:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:22:41,622 INFO L225 Difference]: With dead ends: 511 [2021-05-21 17:22:41,622 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:22:41,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:22:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:22:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:22:41,623 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) [2021-05-21 17:22:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:22:41,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-05-21 17:22:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:22:41,624 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:22:41,624 INFO L483 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) [2021-05-21 17:22:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:22:41,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:22:41,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:22:41,626 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:22:41,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:22:41 BasicIcfg [2021-05-21 17:22:41,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:22:41,629 INFO L168 Benchmark]: Toolchain (without parser) took 4913.71 ms. Allocated memory was 348.1 MB in the beginning and 746.6 MB in the end (delta: 398.5 MB). Free memory was 310.2 MB in the beginning and 613.2 MB in the end (delta: -303.0 MB). Peak memory consumption was 96.0 MB. Max. memory is 16.0 GB. [2021-05-21 17:22:41,629 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 348.1 MB. Free memory was 328.6 MB in the beginning and 328.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:22:41,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.64 ms. Allocated memory is still 348.1 MB. Free memory was 310.0 MB in the beginning and 309.1 MB in the end (delta: 905.4 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-05-21 17:22:41,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 348.1 MB. Free memory was 309.1 MB in the beginning and 307.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:22:41,630 INFO L168 Benchmark]: Boogie Preprocessor took 31.48 ms. Allocated memory is still 348.1 MB. Free memory was 307.0 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:22:41,630 INFO L168 Benchmark]: RCFGBuilder took 444.44 ms. Allocated memory is still 348.1 MB. Free memory was 305.9 MB in the beginning and 280.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:22:41,631 INFO L168 Benchmark]: TraceAbstraction took 3882.25 ms. Allocated memory was 348.1 MB in the beginning and 746.6 MB in the end (delta: 398.5 MB). Free memory was 280.8 MB in the beginning and 613.2 MB in the end (delta: -332.4 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:22:41,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 348.1 MB. Free memory was 328.6 MB in the beginning and 328.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 478.64 ms. Allocated memory is still 348.1 MB. Free memory was 310.0 MB in the beginning and 309.1 MB in the end (delta: 905.4 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 348.1 MB. Free memory was 309.1 MB in the beginning and 307.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.48 ms. Allocated memory is still 348.1 MB. Free memory was 307.0 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 444.44 ms. Allocated memory is still 348.1 MB. Free memory was 305.9 MB in the beginning and 280.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3882.25 ms. Allocated memory was 348.1 MB in the beginning and 746.6 MB in the end (delta: 398.5 MB). Free memory was 280.8 MB in the beginning and 613.2 MB in the end (delta: -332.4 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3769.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 105.7ms, AutomataDifference: 1363.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 506.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 1155 SDslu, 2353 SDs, 0 SdLazy, 262 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 230.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 927.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 464.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 584 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.4ms SsaConstructionTime, 211.1ms SatisfiabilityAnalysisTime, 864.9ms InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 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! Received shutdown request...