/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:41:30,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:41:30,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:41:30,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:41:30,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:41:30,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:41:30,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:41:30,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:41:30,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:41:30,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:41:30,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:41:30,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:41:30,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:41:30,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:41:30,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:41:30,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:41:30,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:41:30,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:41:30,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:41:30,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:41:30,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:41:30,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:41:30,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:41:30,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:41:30,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:41:30,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:41:30,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:41:30,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:41:30,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:41:30,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:41:30,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:41:30,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:41:30,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:41:30,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:41:30,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:41:30,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:41:30,383 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 [2021-01-20 14:41:30,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:41:30,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:41:30,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:41:30,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:41:30,413 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:41:30,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:41:30,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:41:30,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:41:30,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:41:30,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:41:30,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:41:30,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:41:30,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:41:30,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:41:30,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:41:30,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:41:30,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:41:30,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:41:30,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:41:30,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:41:30,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:41:30,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:41:30,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:41:30,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:41:30,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:41:30,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:41:30,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:41:30,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:41:30,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:41:30,418 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:41:30,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:41:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:41:30,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:41:30,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:41:30,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:41:30,853 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:41:30,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-01-20 14:41:30,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1355441b0/654296d5c32b4a2c99992df2eab5af9e/FLAGe07d84c49 [2021-01-20 14:41:31,601 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:41:31,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-01-20 14:41:31,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1355441b0/654296d5c32b4a2c99992df2eab5af9e/FLAGe07d84c49 [2021-01-20 14:41:31,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1355441b0/654296d5c32b4a2c99992df2eab5af9e [2021-01-20 14:41:31,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:41:31,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:41:31,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:41:31,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:41:31,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:41:31,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:41:31" (1/1) ... [2021-01-20 14:41:31,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed2c850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:31, skipping insertion in model container [2021-01-20 14:41:31,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:41:31" (1/1) ... [2021-01-20 14:41:31,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:41:31,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:41:32,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:41:32,433 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:41:32,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:41:32,633 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:41:32,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32 WrapperNode [2021-01-20 14:41:32,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:41:32,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:41:32,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:41:32,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:41:32,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:41:32,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:41:32,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:41:32,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:41:32,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (1/1) ... [2021-01-20 14:41:32,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:41:32,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:41:32,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:41:32,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:41:32,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (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 [2021-01-20 14:41:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:41:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:41:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:41:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:41:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:41:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:41:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:41:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:41:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:41:32,908 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:41:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:41:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:41:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:41:32,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:41:32,911 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:41:33,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:41:33,317 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:41:33,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:41:33 BoogieIcfgContainer [2021-01-20 14:41:33,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:41:33,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:41:33,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:41:33,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:41:33,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:41:31" (1/3) ... [2021-01-20 14:41:33,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3318fcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:41:33, skipping insertion in model container [2021-01-20 14:41:33,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:32" (2/3) ... [2021-01-20 14:41:33,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3318fcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:41:33, skipping insertion in model container [2021-01-20 14:41:33,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:41:33" (3/3) ... [2021-01-20 14:41:33,328 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2021-01-20 14:41:33,342 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:41:33,342 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:41:33,346 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:41:33,347 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:41:33,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,377 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,382 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,382 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:33,399 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:41:33,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:41:33,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:41:33,430 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:41:33,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:41:33,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:41:33,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:41:33,431 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:41:33,431 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:41:33,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:41:33,443 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 14:41:34,322 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:41:34,422 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:34,423 INFO L504 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] [2021-01-20 14:41:34,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 161629245, now seen corresponding path program 1 times [2021-01-20 14:41:34,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:34,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624510910] [2021-01-20 14:41:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:34,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624510910] [2021-01-20 14:41:34,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:34,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:34,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19572446] [2021-01-20 14:41:34,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:34,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:34,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:34,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:34,957 INFO L87 Difference]: Start difference. First operand has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 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 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:35,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:35,379 INFO L93 Difference]: Finished difference Result 11247 states and 38861 transitions. [2021-01-20 14:41:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:35,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-01-20 14:41:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:35,452 INFO L225 Difference]: With dead ends: 11247 [2021-01-20 14:41:35,452 INFO L226 Difference]: Without dead ends: 4317 [2021-01-20 14:41:35,455 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:35,455 INFO L78 Accepts]: Start accepts. Automaton has 4317 states. Word has length 41 [2021-01-20 14:41:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:35,457 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states. [2021-01-20 14:41:35,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states. [2021-01-20 14:41:35,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:41:35,478 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:35,478 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:35,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:41:35,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash -211897154, now seen corresponding path program 1 times [2021-01-20 14:41:35,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:35,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741625697] [2021-01-20 14:41:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:35,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741625697] [2021-01-20 14:41:35,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:35,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:35,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964892541] [2021-01-20 14:41:35,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:35,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:35,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:35,675 INFO L87 Difference]: Start difference. First operand 4317 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:35,847 INFO L93 Difference]: Finished difference Result 4749 states and 15906 transitions. [2021-01-20 14:41:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:41:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:35,884 INFO L225 Difference]: With dead ends: 4749 [2021-01-20 14:41:35,884 INFO L226 Difference]: Without dead ends: 3741 [2021-01-20 14:41:35,885 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:35,885 INFO L78 Accepts]: Start accepts. Automaton has 3741 states. Word has length 43 [2021-01-20 14:41:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states. [2021-01-20 14:41:35,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states. [2021-01-20 14:41:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:41:35,899 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:35,899 INFO L504 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] [2021-01-20 14:41:35,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:41:35,899 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1129606237, now seen corresponding path program 1 times [2021-01-20 14:41:35,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:35,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038574311] [2021-01-20 14:41:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:36,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038574311] [2021-01-20 14:41:36,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:36,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:36,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453117933] [2021-01-20 14:41:36,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:36,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:36,091 INFO L87 Difference]: Start difference. First operand 3741 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:36,274 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-01-20 14:41:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:36,426 INFO L93 Difference]: Finished difference Result 3981 states and 13234 transitions. [2021-01-20 14:41:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-01-20 14:41:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:36,457 INFO L225 Difference]: With dead ends: 3981 [2021-01-20 14:41:36,458 INFO L226 Difference]: Without dead ends: 3421 [2021-01-20 14:41:36,459 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:36,459 INFO L78 Accepts]: Start accepts. Automaton has 3421 states. Word has length 45 [2021-01-20 14:41:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:36,461 INFO L481 AbstractCegarLoop]: Abstraction has 3421 states. [2021-01-20 14:41:36,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states. [2021-01-20 14:41:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:41:36,471 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:36,471 INFO L504 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] [2021-01-20 14:41:36,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:41:36,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1685758671, now seen corresponding path program 1 times [2021-01-20 14:41:36,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:36,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342670307] [2021-01-20 14:41:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342670307] [2021-01-20 14:41:36,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:36,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:36,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255880303] [2021-01-20 14:41:36,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:36,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:36,583 INFO L87 Difference]: Start difference. First operand 3421 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:36,745 INFO L93 Difference]: Finished difference Result 5325 states and 17442 transitions. [2021-01-20 14:41:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-01-20 14:41:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:36,776 INFO L225 Difference]: With dead ends: 5325 [2021-01-20 14:41:36,776 INFO L226 Difference]: Without dead ends: 3741 [2021-01-20 14:41:36,777 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:36,777 INFO L78 Accepts]: Start accepts. Automaton has 3741 states. Word has length 46 [2021-01-20 14:41:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:36,778 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states. [2021-01-20 14:41:36,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states. [2021-01-20 14:41:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:41:36,788 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:36,788 INFO L504 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] [2021-01-20 14:41:36,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:41:36,789 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:36,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1976118498, now seen corresponding path program 1 times [2021-01-20 14:41:36,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:36,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782425781] [2021-01-20 14:41:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:36,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782425781] [2021-01-20 14:41:36,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:36,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:36,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147146518] [2021-01-20 14:41:36,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:36,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:36,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:36,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:36,893 INFO L87 Difference]: Start difference. First operand 3741 states. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:37,091 INFO L93 Difference]: Finished difference Result 5093 states and 16256 transitions. [2021-01-20 14:41:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:41:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-01-20 14:41:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:37,102 INFO L225 Difference]: With dead ends: 5093 [2021-01-20 14:41:37,102 INFO L226 Difference]: Without dead ends: 2763 [2021-01-20 14:41:37,103 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:41:37,103 INFO L78 Accepts]: Start accepts. Automaton has 2763 states. Word has length 47 [2021-01-20 14:41:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:37,103 INFO L481 AbstractCegarLoop]: Abstraction has 2763 states. [2021-01-20 14:41:37,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states. [2021-01-20 14:41:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:41:37,111 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:37,111 INFO L504 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] [2021-01-20 14:41:37,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:41:37,112 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1323121340, now seen corresponding path program 1 times [2021-01-20 14:41:37,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:37,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087180517] [2021-01-20 14:41:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:37,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087180517] [2021-01-20 14:41:37,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:37,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:37,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018934040] [2021-01-20 14:41:37,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:37,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:37,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:37,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:37,257 INFO L87 Difference]: Start difference. First operand 2763 states. 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) [2021-01-20 14:41:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:37,379 INFO L93 Difference]: Finished difference Result 3219 states and 10055 transitions. [2021-01-20 14:41:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:41:37,380 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 [2021-01-20 14:41:37,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:37,385 INFO L225 Difference]: With dead ends: 3219 [2021-01-20 14:41:37,385 INFO L226 Difference]: Without dead ends: 1243 [2021-01-20 14:41:37,386 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:37,386 INFO L78 Accepts]: Start accepts. Automaton has 1243 states. Word has length 48 [2021-01-20 14:41:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:37,386 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states. [2021-01-20 14:41:37,386 INFO L482 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) [2021-01-20 14:41:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states. [2021-01-20 14:41:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:41:37,390 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:37,390 INFO L504 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] [2021-01-20 14:41:37,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:41:37,390 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1461125196, now seen corresponding path program 2 times [2021-01-20 14:41:37,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:37,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482747337] [2021-01-20 14:41:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:37,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482747337] [2021-01-20 14:41:37,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:37,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:37,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182007667] [2021-01-20 14:41:37,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:37,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:37,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:37,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:37,594 INFO L87 Difference]: Start difference. First operand 1243 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-01-20 14:41:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:37,789 INFO L93 Difference]: Finished difference Result 1438 states and 4334 transitions. [2021-01-20 14:41:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2021-01-20 14:41:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:37,795 INFO L225 Difference]: With dead ends: 1438 [2021-01-20 14:41:37,795 INFO L226 Difference]: Without dead ends: 1118 [2021-01-20 14:41:37,796 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:37,796 INFO L78 Accepts]: Start accepts. Automaton has 1118 states. Word has length 48 [2021-01-20 14:41:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states. [2021-01-20 14:41:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-01-20 14:41:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states. [2021-01-20 14:41:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:41:37,800 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:37,801 INFO L504 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] [2021-01-20 14:41:37,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:41:37,802 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash 978213438, now seen corresponding path program 1 times [2021-01-20 14:41:37,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:37,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957341493] [2021-01-20 14:41:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:37,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957341493] [2021-01-20 14:41:37,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:37,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:37,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335395762] [2021-01-20 14:41:37,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:37,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:37,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:37,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:37,968 INFO L87 Difference]: Start difference. First operand 1118 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:38,126 INFO L93 Difference]: Finished difference Result 950 states and 2753 transitions. [2021-01-20 14:41:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:41:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-01-20 14:41:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:38,130 INFO L225 Difference]: With dead ends: 950 [2021-01-20 14:41:38,130 INFO L226 Difference]: Without dead ends: 698 [2021-01-20 14:41:38,131 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:41:38,131 INFO L78 Accepts]: Start accepts. Automaton has 698 states. Word has length 49 [2021-01-20 14:41:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:38,132 INFO L481 AbstractCegarLoop]: Abstraction has 698 states. [2021-01-20 14:41:38,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states. [2021-01-20 14:41:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:41:38,136 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:38,136 INFO L504 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] [2021-01-20 14:41:38,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:41:38,137 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2037269753, now seen corresponding path program 1 times [2021-01-20 14:41:38,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:38,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490802851] [2021-01-20 14:41:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:38,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490802851] [2021-01-20 14:41:38,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:38,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:41:38,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348131340] [2021-01-20 14:41:38,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:41:38,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:38,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:41:38,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:41:38,305 INFO L87 Difference]: Start difference. First operand 698 states. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-20 14:41:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:38,415 INFO L93 Difference]: Finished difference Result 311 states and 815 transitions. [2021-01-20 14:41:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 14:41:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2021-01-20 14:41:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:38,416 INFO L225 Difference]: With dead ends: 311 [2021-01-20 14:41:38,416 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:41:38,417 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:41:38,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 50 [2021-01-20 14:41:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:38,421 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:41:38,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-20 14:41:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:41:38,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:41:38,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:41:38,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:41:38 BasicIcfg [2021-01-20 14:41:38,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:41:38,430 INFO L168 Benchmark]: Toolchain (without parser) took 6542.15 ms. Allocated memory was 302.0 MB in the beginning and 652.2 MB in the end (delta: 350.2 MB). Free memory was 276.2 MB in the beginning and 468.0 MB in the end (delta: -191.8 MB). Peak memory consumption was 159.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:38,431 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:41:38,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.89 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:38,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.25 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 283.6 MB in the end (delta: -38.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:38,434 INFO L168 Benchmark]: Boogie Preprocessor took 59.46 ms. Allocated memory is still 302.0 MB. Free memory was 283.6 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:41:38,438 INFO L168 Benchmark]: RCFGBuilder took 514.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:38,438 INFO L168 Benchmark]: TraceAbstraction took 5106.79 ms. Allocated memory was 302.0 MB in the beginning and 652.2 MB in the end (delta: 350.2 MB). Free memory was 259.5 MB in the beginning and 468.0 MB in the end (delta: -208.5 MB). Peak memory consumption was 144.9 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:38,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 744.89 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 107.25 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 283.6 MB in the end (delta: -38.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 59.46 ms. Allocated memory is still 302.0 MB. Free memory was 283.6 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 514.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5106.79 ms. Allocated memory was 302.0 MB in the beginning and 652.2 MB in the end (delta: 350.2 MB). Free memory was 259.5 MB in the beginning and 468.0 MB in the end (delta: -208.5 MB). Peak memory consumption was 144.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 796 SDtfs, 979 SDslu, 2482 SDs, 0 SdLazy, 277 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8475occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 52356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...