/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:22:52,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:22:52,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:22:52,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:22:52,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:22:52,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:22:52,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:22:52,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:22:52,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:22:52,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:22:52,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:22:52,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:22:52,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:22:52,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:22:52,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:22:52,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:22:52,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:22:52,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:22:52,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:22:52,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:22:52,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:22:52,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:22:52,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:22:52,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:22:52,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:22:52,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:22:52,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:22:52,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:22:52,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:22:52,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:22:52,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:22:52,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:22:52,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:22:52,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:22:52,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:22:52,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:22:52,904 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-keepdead.epf [2021-01-20 21:22:52,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:22:52,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:22:52,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:22:52,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:22:52,946 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:22:52,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:22:52,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:22:52,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:22:52,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:22:52,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:22:52,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:22:52,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:22:52,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:22:52,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:22:52,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:22:52,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:22:52,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:22:52,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:22:52,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:22:52,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:22:52,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:22:52,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:22:52,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:22:52,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:22:52,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:22:52,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:22:52,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:22:52,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:22:52,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:22:52,952 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:22:52,952 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:22:52,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:22:53,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:22:53,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:22:53,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:22:53,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:22:53,407 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:22:53,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-01-20 21:22:53,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c05f32/59a2e65dcc6d4915a914e4fad1a0b899/FLAGfdc9bd23f [2021-01-20 21:22:54,245 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:22:54,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-01-20 21:22:54,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c05f32/59a2e65dcc6d4915a914e4fad1a0b899/FLAGfdc9bd23f [2021-01-20 21:22:54,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c05f32/59a2e65dcc6d4915a914e4fad1a0b899 [2021-01-20 21:22:54,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:22:54,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:22:54,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:22:54,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:22:54,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:22:54,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:22:54" (1/1) ... [2021-01-20 21:22:54,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728d06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:54, skipping insertion in model container [2021-01-20 21:22:54,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:22:54" (1/1) ... [2021-01-20 21:22:54,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:22:54,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:22:54,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:22:55,006 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:22:55,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:22:55,158 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:22:55,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55 WrapperNode [2021-01-20 21:22:55,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:22:55,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:22:55,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:22:55,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:22:55,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:22:55,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:22:55,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:22:55,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:22:55,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (1/1) ... [2021-01-20 21:22:55,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:22:55,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:22:55,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:22:55,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:22:55,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (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 21:22:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:22:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:22:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:22:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:22:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:22:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:22:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:22:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:22:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:22:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:22:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:22:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:22:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:22:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:22:55,429 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 21:22:56,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:22:56,115 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:22:56,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:22:56 BoogieIcfgContainer [2021-01-20 21:22:56,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:22:56,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:22:56,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:22:56,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:22:56,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:22:54" (1/3) ... [2021-01-20 21:22:56,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce3ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:22:56, skipping insertion in model container [2021-01-20 21:22:56,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:55" (2/3) ... [2021-01-20 21:22:56,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce3ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:22:56, skipping insertion in model container [2021-01-20 21:22:56,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:22:56" (3/3) ... [2021-01-20 21:22:56,131 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-01-20 21:22:56,147 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:22:56,147 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:22:56,151 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:22:56,152 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:22:56,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,212 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,214 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,230 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,231 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:56,239 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:22:56,253 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:22:56,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:22:56,279 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:22:56,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:22:56,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:22:56,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:22:56,280 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:22:56,280 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:22:56,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:22:56,293 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 21:22:57,094 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 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 21:22:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 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 21:22:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:22:57,199 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:57,200 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 21:22:57,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1677715490, now seen corresponding path program 1 times [2021-01-20 21:22:57,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:57,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397663969] [2021-01-20 21:22:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:57,635 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 21:22:57,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397663969] [2021-01-20 21:22:57,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:57,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:57,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778085902] [2021-01-20 21:22:57,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:57,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:57,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:57,689 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 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 21:22:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:58,105 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2021-01-20 21:22:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:22:58,107 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 21:22:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:58,110 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:22:58,111 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 36159 transitions. Word has length 41 [2021-01-20 21:22:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:58,113 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 36159 transitions. [2021-01-20 21:22:58,113 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 21:22:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 36159 transitions. [2021-01-20 21:22:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:22:58,134 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:58,134 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 21:22:58,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:22:58,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1722165763, now seen corresponding path program 1 times [2021-01-20 21:22:58,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:58,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400644879] [2021-01-20 21:22:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:58,331 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 21:22:58,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400644879] [2021-01-20 21:22:58,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:58,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:58,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921023746] [2021-01-20 21:22:58,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:58,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:58,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:58,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:58,339 INFO L87 Difference]: Start difference. First operand 10463 states and 36159 transitions. 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 21:22:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:58,833 INFO L93 Difference]: Finished difference Result 16391 states and 56271 transitions. [2021-01-20 21:22:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:22:58,835 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 21:22:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:58,840 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 21:22:58,840 INFO L78 Accepts]: Start accepts. Automaton has 16391 states and 56271 transitions. Word has length 43 [2021-01-20 21:22:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:58,844 INFO L481 AbstractCegarLoop]: Abstraction has 16391 states and 56271 transitions. [2021-01-20 21:22:58,844 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 21:22:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 16391 states and 56271 transitions. [2021-01-20 21:22:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:22:58,887 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:58,888 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 21:22:58,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:22:58,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash -76177078, now seen corresponding path program 1 times [2021-01-20 21:22:58,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:58,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588681840] [2021-01-20 21:22:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:59,174 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 21:22:59,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588681840] [2021-01-20 21:22:59,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:59,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:59,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877638095] [2021-01-20 21:22:59,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:59,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:59,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:59,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:59,179 INFO L87 Difference]: Start difference. First operand 16391 states and 56271 transitions. 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 21:22:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:59,422 INFO L93 Difference]: Finished difference Result 11477 states and 38398 transitions. [2021-01-20 21:22:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:22:59,423 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 21:22:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:59,424 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:22:59,424 INFO L78 Accepts]: Start accepts. Automaton has 11477 states and 38398 transitions. Word has length 45 [2021-01-20 21:22:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:59,425 INFO L481 AbstractCegarLoop]: Abstraction has 11477 states and 38398 transitions. [2021-01-20 21:22:59,425 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 21:22:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11477 states and 38398 transitions. [2021-01-20 21:22:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 21:22:59,511 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:59,511 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 21:22:59,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:22:59,512 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1683529846, now seen corresponding path program 1 times [2021-01-20 21:22:59,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:59,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811372129] [2021-01-20 21:22:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:59,711 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 21:22:59,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811372129] [2021-01-20 21:22:59,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:59,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:59,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429637163] [2021-01-20 21:22:59,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:59,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:59,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:59,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:59,746 INFO L87 Difference]: Start difference. First operand 11477 states and 38398 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 21:23:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:23:00,037 INFO L93 Difference]: Finished difference Result 7085 states and 22966 transitions. [2021-01-20 21:23:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:23:00,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 21:23:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:23:00,039 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:23:00,039 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 22966 transitions. Word has length 46 [2021-01-20 21:23:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:23:00,040 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 22966 transitions. [2021-01-20 21:23:00,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 21:23:00,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 22966 transitions. [2021-01-20 21:23:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:23:00,059 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:23:00,059 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 21:23:00,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:23:00,060 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:23:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:23:00,061 INFO L82 PathProgramCache]: Analyzing trace with hash 563011175, now seen corresponding path program 1 times [2021-01-20 21:23:00,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:23:00,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849018561] [2021-01-20 21:23:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:23:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:23:00,219 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 21:23:00,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849018561] [2021-01-20 21:23:00,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:23:00,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:23:00,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49479643] [2021-01-20 21:23:00,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:23:00,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:23:00,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:23:00,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:23:00,222 INFO L87 Difference]: Start difference. First operand 7085 states and 22966 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 21:23:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:23:00,555 INFO L93 Difference]: Finished difference Result 4781 states and 15385 transitions. [2021-01-20 21:23:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:23:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 21:23:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:23:00,556 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:23:00,557 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 15385 transitions. Word has length 48 [2021-01-20 21:23:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:23:00,557 INFO L481 AbstractCegarLoop]: Abstraction has 4781 states and 15385 transitions. [2021-01-20 21:23:00,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 21:23:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 15385 transitions. [2021-01-20 21:23:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:23:00,570 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:23:00,570 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, 1, 1] [2021-01-20 21:23:00,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:23:00,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:23:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:23:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1443652201, now seen corresponding path program 1 times [2021-01-20 21:23:00,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:23:00,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847169070] [2021-01-20 21:23:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:23:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:23:00,693 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 21:23:00,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847169070] [2021-01-20 21:23:00,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:23:00,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:23:00,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105018435] [2021-01-20 21:23:00,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:23:00,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:23:00,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:23:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:23:00,696 INFO L87 Difference]: Start difference. First operand 4781 states and 15385 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2021-01-20 21:23:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:23:00,894 INFO L93 Difference]: Finished difference Result 7136 states and 22720 transitions. [2021-01-20 21:23:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:23:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 [2021-01-20 21:23:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:23:00,895 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:23:00,895 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 22720 transitions. Word has length 52 [2021-01-20 21:23:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:23:00,896 INFO L481 AbstractCegarLoop]: Abstraction has 7136 states and 22720 transitions. [2021-01-20 21:23:00,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2021-01-20 21:23:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 22720 transitions. [2021-01-20 21:23:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:23:00,916 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:23:00,916 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, 1, 1] [2021-01-20 21:23:00,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:23:00,916 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:23:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:23:00,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1808649785, now seen corresponding path program 2 times [2021-01-20 21:23:00,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:23:00,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820009566] [2021-01-20 21:23:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:23:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:23:01,009 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 21:23:01,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820009566] [2021-01-20 21:23:01,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:23:01,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:23:01,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564876919] [2021-01-20 21:23:01,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:23:01,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:23:01,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:23:01,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:23:01,012 INFO L87 Difference]: Start difference. First operand 7136 states and 22720 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) [2021-01-20 21:23:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:23:01,158 INFO L93 Difference]: Finished difference Result 11042 states and 34652 transitions. [2021-01-20 21:23:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 21:23:01,158 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 [2021-01-20 21:23:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:23:01,159 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 21:23:01,159 INFO L78 Accepts]: Start accepts. Automaton has 11042 states and 34652 transitions. Word has length 52 [2021-01-20 21:23:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:23:01,160 INFO L481 AbstractCegarLoop]: Abstraction has 11042 states and 34652 transitions. [2021-01-20 21:23:01,160 INFO L482 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) [2021-01-20 21:23:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11042 states and 34652 transitions. [2021-01-20 21:23:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:23:01,185 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:23:01,186 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, 1, 1] [2021-01-20 21:23:01,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:23:01,186 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:23:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:23:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 976887845, now seen corresponding path program 3 times [2021-01-20 21:23:01,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:23:01,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380134483] [2021-01-20 21:23:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:23:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:23:01,320 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 21:23:01,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380134483] [2021-01-20 21:23:01,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:23:01,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:23:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774808663] [2021-01-20 21:23:01,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:23:01,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:23:01,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:23:01,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:23:01,325 INFO L87 Difference]: Start difference. First operand 11042 states and 34652 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2021-01-20 21:23:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:23:01,584 INFO L93 Difference]: Finished difference Result 17724 states and 55418 transitions. [2021-01-20 21:23:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:23:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 [2021-01-20 21:23:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:23:01,585 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 21:23:01,585 INFO L78 Accepts]: Start accepts. Automaton has 17724 states and 55418 transitions. Word has length 52 [2021-01-20 21:23:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:23:01,586 INFO L481 AbstractCegarLoop]: Abstraction has 17724 states and 55418 transitions. [2021-01-20 21:23:01,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2021-01-20 21:23:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 17724 states and 55418 transitions. [2021-01-20 21:23:01,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:23:01,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:23:01,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:23:01 BasicIcfg [2021-01-20 21:23:01,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:23:01,634 INFO L168 Benchmark]: Toolchain (without parser) took 7113.15 ms. Allocated memory was 302.0 MB in the beginning and 742.4 MB in the end (delta: 440.4 MB). Free memory was 277.4 MB in the beginning and 531.1 MB in the end (delta: -253.6 MB). Peak memory consumption was 188.2 MB. Max. memory is 16.0 GB. [2021-01-20 21:23:01,634 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:23:01,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.71 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:23:01,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.59 ms. Allocated memory is still 302.0 MB. Free memory was 246.5 MB in the beginning and 284.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2021-01-20 21:23:01,637 INFO L168 Benchmark]: Boogie Preprocessor took 57.75 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:23:01,638 INFO L168 Benchmark]: RCFGBuilder took 772.48 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 260.5 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:23:01,639 INFO L168 Benchmark]: TraceAbstraction took 5506.73 ms. Allocated memory was 302.0 MB in the beginning and 742.4 MB in the end (delta: 440.4 MB). Free memory was 260.5 MB in the beginning and 531.1 MB in the end (delta: -270.6 MB). Peak memory consumption was 170.9 MB. Max. memory is 16.0 GB. [2021-01-20 21:23:01,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 637.71 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 128.59 ms. Allocated memory is still 302.0 MB. Free memory was 246.5 MB in the beginning and 284.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 57.75 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 772.48 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 260.5 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5506.73 ms. Allocated memory was 302.0 MB in the beginning and 742.4 MB in the end (delta: 440.4 MB). Free memory was 260.5 MB in the beginning and 531.1 MB in the end (delta: -270.6 MB). Peak memory consumption was 170.9 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: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 835 SDtfs, 1351 SDslu, 2893 SDs, 0 SdLazy, 321 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17724occurred in iteration=8, 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, 0.9s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 46089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...