/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/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:17:17,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:17:17,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:17:17,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:17:17,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:17:17,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:17:17,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:17:17,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:17:17,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:17:17,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:17:17,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:17:17,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:17:17,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:17:17,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:17:17,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:17:17,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:17:17,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:17:17,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:17:17,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:17:17,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:17:17,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:17:17,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:17:17,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:17:17,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:17:17,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:17:17,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:17:17,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:17:17,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:17:17,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:17:17,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:17:17,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:17:17,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:17:17,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:17:17,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:17:17,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:17:17,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:17:17,959 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 [2020-11-11 18:17:18,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:17:18,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:17:18,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:17:18,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:17:18,013 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:17:18,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:17:18,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:17:18,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:17:18,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:17:18,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:17:18,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:17:18,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:17:18,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:17:18,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:17:18,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:17:18,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:17:18,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:17:18,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:17:18,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:17:18,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:17:18,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:17:18,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:17:18,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:17:18,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:17:18,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:17:18,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:17:18,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:17:18,019 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:17:18,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:17:18,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:17:18,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:17:18,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:17:18,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:17:18,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:17:18,506 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:17:18,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-11 18:17:18,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bc43df/9b229e79b1424fee90412add7ab8e66e/FLAG13fc31dd9 [2020-11-11 18:17:19,360 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:17:19,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-11 18:17:19,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bc43df/9b229e79b1424fee90412add7ab8e66e/FLAG13fc31dd9 [2020-11-11 18:17:19,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bc43df/9b229e79b1424fee90412add7ab8e66e [2020-11-11 18:17:19,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:17:19,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:17:19,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:17:19,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:17:19,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:17:19,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:17:19" (1/1) ... [2020-11-11 18:17:19,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2eaee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:19, skipping insertion in model container [2020-11-11 18:17:19,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:17:19" (1/1) ... [2020-11-11 18:17:19,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:17:19,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:17:20,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:17:20,153 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:17:20,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:17:20,293 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:17:20,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20 WrapperNode [2020-11-11 18:17:20,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:17:20,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:17:20,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:17:20,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:17:20,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:17:20,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:17:20,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:17:20,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:17:20,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (1/1) ... [2020-11-11 18:17:20,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:17:20,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:17:20,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:17:20,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:17:20,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (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 [2020-11-11 18:17:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:17:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:17:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:17:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:17:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:17:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:17:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:17:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:17:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:17:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:17:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:17:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:17:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:17:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:17:20,496 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:17:20,987 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:17:20,988 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:17:20,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:17:20 BoogieIcfgContainer [2020-11-11 18:17:20,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:17:20,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:17:20,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:17:20,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:17:20,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:17:19" (1/3) ... [2020-11-11 18:17:20,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d90550b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:17:20, skipping insertion in model container [2020-11-11 18:17:20,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:17:20" (2/3) ... [2020-11-11 18:17:20,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d90550b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:17:20, skipping insertion in model container [2020-11-11 18:17:21,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:17:20" (3/3) ... [2020-11-11 18:17:21,001 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-11-11 18:17:21,018 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:17:21,018 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:17:21,023 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:17:21,024 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:17:21,080 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,080 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,112 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,118 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,118 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:17:21,122 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:17:21,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:17:21,179 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:17:21,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:17:21,179 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:17:21,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:17:21,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:17:21,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:17:21,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:17:21,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:17:21,199 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:17:22,165 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2020-11-11 18:17:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2020-11-11 18:17:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:17:22,258 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:22,259 INFO L494 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] [2020-11-11 18:17:22,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1916858186, now seen corresponding path program 1 times [2020-11-11 18:17:22,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:22,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100725035] [2020-11-11 18:17:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:22,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100725035] [2020-11-11 18:17:22,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:22,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:17:22,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733766846] [2020-11-11 18:17:22,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:17:22,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:17:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:17:22,907 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-11 18:17:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:23,308 INFO L93 Difference]: Finished difference Result 13208 states and 46044 transitions. [2020-11-11 18:17:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:17:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-11 18:17:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:23,391 INFO L225 Difference]: With dead ends: 13208 [2020-11-11 18:17:23,391 INFO L226 Difference]: Without dead ends: 5053 [2020-11-11 18:17:23,394 INFO L749 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 [2020-11-11 18:17:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2020-11-11 18:17:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 5053. [2020-11-11 18:17:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 5052 states have (on average 3.4323040380047507) internal successors, (17340), 5052 states have internal predecessors, (17340), 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) [2020-11-11 18:17:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 17340 transitions. [2020-11-11 18:17:23,938 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 17340 transitions. Word has length 42 [2020-11-11 18:17:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:23,940 INFO L481 AbstractCegarLoop]: Abstraction has 5053 states and 17340 transitions. [2020-11-11 18:17:23,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-11 18:17:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 17340 transitions. [2020-11-11 18:17:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:17:23,951 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:23,951 INFO L494 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] [2020-11-11 18:17:23,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:17:23,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:23,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1520283371, now seen corresponding path program 1 times [2020-11-11 18:17:23,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:23,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222097590] [2020-11-11 18:17:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:24,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222097590] [2020-11-11 18:17:24,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:24,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:17:24,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053943733] [2020-11-11 18:17:24,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:17:24,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:17:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:17:24,199 INFO L87 Difference]: Start difference. First operand 5053 states and 17340 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2020-11-11 18:17:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:24,524 INFO L93 Difference]: Finished difference Result 5785 states and 19401 transitions. [2020-11-11 18:17:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:17:24,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2020-11-11 18:17:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:24,563 INFO L225 Difference]: With dead ends: 5785 [2020-11-11 18:17:24,564 INFO L226 Difference]: Without dead ends: 4413 [2020-11-11 18:17:24,565 INFO L749 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 [2020-11-11 18:17:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2020-11-11 18:17:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4413. [2020-11-11 18:17:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 3.3499546690843154) internal successors, (14780), 4412 states have internal predecessors, (14780), 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) [2020-11-11 18:17:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 14780 transitions. [2020-11-11 18:17:24,864 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 14780 transitions. Word has length 44 [2020-11-11 18:17:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:24,865 INFO L481 AbstractCegarLoop]: Abstraction has 4413 states and 14780 transitions. [2020-11-11 18:17:24,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2020-11-11 18:17:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 14780 transitions. [2020-11-11 18:17:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:17:24,878 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:24,878 INFO L494 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] [2020-11-11 18:17:24,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:17:24,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash 44408180, now seen corresponding path program 1 times [2020-11-11 18:17:24,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:24,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045638067] [2020-11-11 18:17:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:25,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045638067] [2020-11-11 18:17:25,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:25,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:17:25,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034311237] [2020-11-11 18:17:25,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:17:25,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:25,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:17:25,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:17:25,054 INFO L87 Difference]: Start difference. First operand 4413 states and 14780 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) [2020-11-11 18:17:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:25,321 INFO L93 Difference]: Finished difference Result 3801 states and 12185 transitions. [2020-11-11 18:17:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:17:25,322 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 [2020-11-11 18:17:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:25,345 INFO L225 Difference]: With dead ends: 3801 [2020-11-11 18:17:25,346 INFO L226 Difference]: Without dead ends: 2685 [2020-11-11 18:17:25,346 INFO L749 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 [2020-11-11 18:17:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-11-11 18:17:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685. [2020-11-11 18:17:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2684 states have (on average 3.1460506706408347) internal successors, (8444), 2684 states have internal predecessors, (8444), 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) [2020-11-11 18:17:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 8444 transitions. [2020-11-11 18:17:25,479 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 8444 transitions. Word has length 46 [2020-11-11 18:17:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:25,480 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 8444 transitions. [2020-11-11 18:17:25,482 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) [2020-11-11 18:17:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 8444 transitions. [2020-11-11 18:17:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:17:25,490 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:25,490 INFO L494 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] [2020-11-11 18:17:25,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:17:25,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1894826698, now seen corresponding path program 1 times [2020-11-11 18:17:25,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:25,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922741403] [2020-11-11 18:17:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:25,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922741403] [2020-11-11 18:17:25,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:25,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:17:25,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215961872] [2020-11-11 18:17:25,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:17:25,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:25,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:17:25,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:17:25,824 INFO L87 Difference]: Start difference. First operand 2685 states and 8444 transitions. 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) [2020-11-11 18:17:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:26,060 INFO L93 Difference]: Finished difference Result 1821 states and 5501 transitions. [2020-11-11 18:17:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:17:26,061 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 [2020-11-11 18:17:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:26,073 INFO L225 Difference]: With dead ends: 1821 [2020-11-11 18:17:26,073 INFO L226 Difference]: Without dead ends: 1281 [2020-11-11 18:17:26,074 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:17:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-11 18:17:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2020-11-11 18:17:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.940625) internal successors, (3764), 1280 states have internal predecessors, (3764), 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) [2020-11-11 18:17:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 3764 transitions. [2020-11-11 18:17:26,127 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 3764 transitions. Word has length 50 [2020-11-11 18:17:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:26,128 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 3764 transitions. [2020-11-11 18:17:26,128 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) [2020-11-11 18:17:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 3764 transitions. [2020-11-11 18:17:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:17:26,133 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:26,133 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:17:26,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:17:26,133 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash -60408392, now seen corresponding path program 1 times [2020-11-11 18:17:26,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:26,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157144245] [2020-11-11 18:17:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:26,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157144245] [2020-11-11 18:17:26,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:26,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:17:26,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153029237] [2020-11-11 18:17:26,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:17:26,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:17:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:17:26,321 INFO L87 Difference]: Start difference. First operand 1281 states and 3764 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2020-11-11 18:17:26,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:26,430 INFO L93 Difference]: Finished difference Result 1804 states and 5307 transitions. [2020-11-11 18:17:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 18:17:26,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2020-11-11 18:17:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:26,450 INFO L225 Difference]: With dead ends: 1804 [2020-11-11 18:17:26,450 INFO L226 Difference]: Without dead ends: 911 [2020-11-11 18:17:26,451 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 18:17:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-11-11 18:17:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2020-11-11 18:17:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.878021978021978) internal successors, (2619), 910 states have internal predecessors, (2619), 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) [2020-11-11 18:17:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2619 transitions. [2020-11-11 18:17:26,488 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2619 transitions. Word has length 54 [2020-11-11 18:17:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:26,490 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 2619 transitions. [2020-11-11 18:17:26,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2020-11-11 18:17:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2619 transitions. [2020-11-11 18:17:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:17:26,495 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:26,495 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:17:26,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:17:26,496 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:26,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1912523388, now seen corresponding path program 2 times [2020-11-11 18:17:26,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:26,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781388446] [2020-11-11 18:17:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:26,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781388446] [2020-11-11 18:17:26,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:26,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:17:26,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572639868] [2020-11-11 18:17:26,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:17:26,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:26,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:17:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:17:26,666 INFO L87 Difference]: Start difference. First operand 911 states and 2619 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-11 18:17:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:26,779 INFO L93 Difference]: Finished difference Result 1394 states and 4032 transitions. [2020-11-11 18:17:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:17:26,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2020-11-11 18:17:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:26,790 INFO L225 Difference]: With dead ends: 1394 [2020-11-11 18:17:26,790 INFO L226 Difference]: Without dead ends: 731 [2020-11-11 18:17:26,791 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:17:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-11-11 18:17:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2020-11-11 18:17:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 2.8068493150684932) internal successors, (2049), 730 states have internal predecessors, (2049), 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) [2020-11-11 18:17:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2049 transitions. [2020-11-11 18:17:26,815 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2049 transitions. Word has length 54 [2020-11-11 18:17:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:26,815 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 2049 transitions. [2020-11-11 18:17:26,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-11 18:17:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2049 transitions. [2020-11-11 18:17:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:17:26,818 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:17:26,818 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:17:26,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:17:26,819 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:17:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:17:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2071801964, now seen corresponding path program 3 times [2020-11-11 18:17:26,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:17:26,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852020603] [2020-11-11 18:17:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:17:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:17:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:17:26,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852020603] [2020-11-11 18:17:26,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:17:26,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:17:26,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300455123] [2020-11-11 18:17:26,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:17:26,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:17:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:17:26,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:17:26,986 INFO L87 Difference]: Start difference. First operand 731 states and 2049 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-11 18:17:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:17:27,095 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2020-11-11 18:17:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:17:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2020-11-11 18:17:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:17:27,096 INFO L225 Difference]: With dead ends: 623 [2020-11-11 18:17:27,096 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:17:27,096 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:17:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:17:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:17:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:17:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:17:27,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:17:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:17:27,098 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:17:27,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-11 18:17:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:17:27,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:17:27,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:17:27,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:17:27 BasicIcfg [2020-11-11 18:17:27,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:17:27,108 INFO L168 Benchmark]: Toolchain (without parser) took 7464.87 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 277.4 MB in the beginning and 1.1 GB in the end (delta: -861.8 MB). Peak memory consumption was 204.7 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,108 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:17:27,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.47 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.1 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,111 INFO L168 Benchmark]: Boogie Preprocessor took 51.71 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 284.8 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,112 INFO L168 Benchmark]: RCFGBuilder took 592.43 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 262.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,113 INFO L168 Benchmark]: TraceAbstraction took 6110.95 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 261.4 MB in the beginning and 1.1 GB in the end (delta: -877.8 MB). Peak memory consumption was 187.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:17:27,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 644.47 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.1 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 51.71 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 284.8 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * RCFGBuilder took 592.43 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 262.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6110.95 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 261.4 MB in the beginning and 1.1 GB in the end (delta: -877.8 MB). Peak memory consumption was 187.6 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 638 SDtfs, 907 SDslu, 2127 SDs, 0 SdLazy, 242 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 39631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...