/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:10:58,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:10:58,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:10:58,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:10:58,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:10:58,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:10:58,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:10:58,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:10:58,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:10:58,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:10:58,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:10:58,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:10:58,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:10:58,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:10:58,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:10:58,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:10:58,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:10:58,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:10:58,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:10:58,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:10:58,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:10:58,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:10:58,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:10:58,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:10:58,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:10:58,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:10:58,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:10:58,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:10:58,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:10:58,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:10:58,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:10:58,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:10:58,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:10:58,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:10:58,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:10:58,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:10:58,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:10:58,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:10:58,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:10:58,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:10:58,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:10:58,980 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:10:58,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:10:58,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:10:58,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:10:58,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:10:58,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:10:58,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:10:58,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:10:58,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:10:58,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:10:58,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:10:58,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:10:58,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:10:58,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:10:58,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:10:58,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:10:58,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:10:59,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:10:59,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:10:59,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:10:59,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:10:59,475 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:10:59,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i [2020-12-22 11:10:59,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38783e0e8/ce1b59dc1c394f4a986b1eefd1651111/FLAGc30fe7399 [2020-12-22 11:11:00,275 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:11:00,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i [2020-12-22 11:11:00,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38783e0e8/ce1b59dc1c394f4a986b1eefd1651111/FLAGc30fe7399 [2020-12-22 11:11:00,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38783e0e8/ce1b59dc1c394f4a986b1eefd1651111 [2020-12-22 11:11:00,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:11:00,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:11:00,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:00,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:11:00,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:11:00,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:00" (1/1) ... [2020-12-22 11:11:00,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4256d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:00, skipping insertion in model container [2020-12-22 11:11:00,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:00" (1/1) ... [2020-12-22 11:11:00,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:11:00,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:11:00,826 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i[950,963] [2020-12-22 11:11:01,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:01,011 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:11:01,025 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i[950,963] [2020-12-22 11:11:01,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:01,208 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:11:01,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01 WrapperNode [2020-12-22 11:11:01,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:01,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:01,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:11:01,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:11:01,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:01,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:11:01,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:11:01,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:11:01,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (1/1) ... [2020-12-22 11:11:01,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:11:01,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:11:01,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:11:01,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:11:01,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (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 [2020-12-22 11:11:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:11:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:11:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:11:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:11:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:11:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:11:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:11:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:11:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:11:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:11:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:11:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:11:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:11:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:11:01,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:11:01,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:11:01,845 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:11:01,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:01 BoogieIcfgContainer [2020-12-22 11:11:01,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:11:01,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:11:01,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:11:01,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:11:01,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:11:00" (1/3) ... [2020-12-22 11:11:01,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecc2897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:01, skipping insertion in model container [2020-12-22 11:11:01,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:01" (2/3) ... [2020-12-22 11:11:01,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecc2897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:01, skipping insertion in model container [2020-12-22 11:11:01,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:01" (3/3) ... [2020-12-22 11:11:01,863 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-12-22 11:11:01,870 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:11:01,870 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:11:01,875 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:11:01,876 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:11:01,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,961 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:01,975 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:11:01,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:11:02,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:11:02,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:11:02,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:11:02,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:11:02,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:11:02,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:11:02,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:11:02,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:11:02,056 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:11:02,061 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:11:02,066 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:11:02,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-22 11:11:02,152 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-22 11:11:02,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:11:02,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:11:02,162 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:11:04,665 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:11:04,780 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:11:04,964 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:11:05,055 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2020-12-22 11:11:05,056 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-22 11:11:05,062 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:11:05,092 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:11:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:11:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:11:05,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:05,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:05,102 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2020-12-22 11:11:05,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:05,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700502718] [2020-12-22 11:11:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:05,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700502718] [2020-12-22 11:11:05,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:05,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:05,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91710051] [2020-12-22 11:11:05,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:11:05,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:11:05,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:05,328 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:11:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:05,381 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:11:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:11:05,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:11:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:05,410 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:11:05,411 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:11:05,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:11:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:11:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:11:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:11:05,508 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:11:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:05,509 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:11:05,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:11:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:11:05,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:11:05,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:05,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:05,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:11:05,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:05,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2020-12-22 11:11:05,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:05,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113301227] [2020-12-22 11:11:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:05,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113301227] [2020-12-22 11:11:05,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:05,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:05,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140973811] [2020-12-22 11:11:05,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:05,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:05,669 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:11:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:05,712 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-12-22 11:11:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:05,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:11:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:05,716 INFO L225 Difference]: With dead ends: 346 [2020-12-22 11:11:05,717 INFO L226 Difference]: Without dead ends: 282 [2020-12-22 11:11:05,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-22 11:11:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-22 11:11:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-22 11:11:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-12-22 11:11:05,741 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-12-22 11:11:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:05,741 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-12-22 11:11:05,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-12-22 11:11:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:11:05,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:05,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:05,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:11:05,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1694304319, now seen corresponding path program 1 times [2020-12-22 11:11:05,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:05,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388161742] [2020-12-22 11:11:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:05,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388161742] [2020-12-22 11:11:05,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:05,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:05,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474734027] [2020-12-22 11:11:05,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:05,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:05,907 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 5 states. [2020-12-22 11:11:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:05,960 INFO L93 Difference]: Finished difference Result 418 states and 1114 transitions. [2020-12-22 11:11:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:11:05,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:11:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:05,964 INFO L225 Difference]: With dead ends: 418 [2020-12-22 11:11:05,964 INFO L226 Difference]: Without dead ends: 314 [2020-12-22 11:11:05,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-22 11:11:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2020-12-22 11:11:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-22 11:11:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 760 transitions. [2020-12-22 11:11:06,014 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 760 transitions. Word has length 10 [2020-12-22 11:11:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 760 transitions. [2020-12-22 11:11:06,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 760 transitions. [2020-12-22 11:11:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:11:06,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:06,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:06,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:11:06,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash 983803802, now seen corresponding path program 1 times [2020-12-22 11:11:06,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:06,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296853400] [2020-12-22 11:11:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:06,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296853400] [2020-12-22 11:11:06,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:06,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:06,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356800357] [2020-12-22 11:11:06,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:06,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:06,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:06,135 INFO L87 Difference]: Start difference. First operand 278 states and 760 transitions. Second operand 5 states. [2020-12-22 11:11:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:06,190 INFO L93 Difference]: Finished difference Result 340 states and 898 transitions. [2020-12-22 11:11:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:06,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:11:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:06,193 INFO L225 Difference]: With dead ends: 340 [2020-12-22 11:11:06,193 INFO L226 Difference]: Without dead ends: 178 [2020-12-22 11:11:06,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:11:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-22 11:11:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-22 11:11:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-22 11:11:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 444 transitions. [2020-12-22 11:11:06,205 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 444 transitions. Word has length 11 [2020-12-22 11:11:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,205 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 444 transitions. [2020-12-22 11:11:06,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 444 transitions. [2020-12-22 11:11:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:11:06,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:06,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:06,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:11:06,212 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1699197876, now seen corresponding path program 1 times [2020-12-22 11:11:06,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:06,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307641969] [2020-12-22 11:11:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:06,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307641969] [2020-12-22 11:11:06,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:06,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:06,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821644963] [2020-12-22 11:11:06,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:06,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:06,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:06,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:06,353 INFO L87 Difference]: Start difference. First operand 178 states and 444 transitions. Second operand 4 states. [2020-12-22 11:11:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:06,383 INFO L93 Difference]: Finished difference Result 194 states and 437 transitions. [2020-12-22 11:11:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:06,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:11:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:06,385 INFO L225 Difference]: With dead ends: 194 [2020-12-22 11:11:06,385 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 11:11:06,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 11:11:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-22 11:11:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 11:11:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-12-22 11:11:06,392 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 12 [2020-12-22 11:11:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,393 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-12-22 11:11:06,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-12-22 11:11:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:11:06,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:06,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:06,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:11:06,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash -610429625, now seen corresponding path program 1 times [2020-12-22 11:11:06,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:06,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892605506] [2020-12-22 11:11:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:06,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892605506] [2020-12-22 11:11:06,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:06,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:06,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550050099] [2020-12-22 11:11:06,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:06,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:06,458 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 5 states. [2020-12-22 11:11:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:06,500 INFO L93 Difference]: Finished difference Result 137 states and 280 transitions. [2020-12-22 11:11:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:06,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:11:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:06,501 INFO L225 Difference]: With dead ends: 137 [2020-12-22 11:11:06,501 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 11:11:06,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:11:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 11:11:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-22 11:11:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 11:11:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 220 transitions. [2020-12-22 11:11:06,506 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 220 transitions. Word has length 13 [2020-12-22 11:11:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,507 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 220 transitions. [2020-12-22 11:11:06,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 220 transitions. [2020-12-22 11:11:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:11:06,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:06,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:06,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:11:06,508 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1583313088, now seen corresponding path program 1 times [2020-12-22 11:11:06,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:06,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419919460] [2020-12-22 11:11:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:06,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419919460] [2020-12-22 11:11:06,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:06,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:11:06,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463588259] [2020-12-22 11:11:06,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:11:06,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:11:06,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:11:06,571 INFO L87 Difference]: Start difference. First operand 109 states and 220 transitions. Second operand 6 states. [2020-12-22 11:11:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:06,613 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2020-12-22 11:11:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:11:06,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 11:11:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:06,614 INFO L225 Difference]: With dead ends: 98 [2020-12-22 11:11:06,615 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 11:11:06,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 11:11:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-12-22 11:11:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 11:11:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 157 transitions. [2020-12-22 11:11:06,619 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 157 transitions. Word has length 15 [2020-12-22 11:11:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,619 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 157 transitions. [2020-12-22 11:11:06,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:11:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 157 transitions. [2020-12-22 11:11:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:11:06,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:06,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:06,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:11:06,620 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:06,621 INFO L82 PathProgramCache]: Analyzing trace with hash 414255100, now seen corresponding path program 1 times [2020-12-22 11:11:06,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:06,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694435166] [2020-12-22 11:11:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:06,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694435166] [2020-12-22 11:11:06,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:06,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:06,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926710018] [2020-12-22 11:11:06,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:06,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:06,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:06,679 INFO L87 Difference]: Start difference. First operand 77 states and 157 transitions. Second operand 5 states. [2020-12-22 11:11:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:06,701 INFO L93 Difference]: Finished difference Result 76 states and 156 transitions. [2020-12-22 11:11:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:06,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:11:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:06,701 INFO L225 Difference]: With dead ends: 76 [2020-12-22 11:11:06,702 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:11:06,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:11:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:11:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:11:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:11:06,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:11:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:06,703 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:11:06,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:11:06,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:11:06,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:11:06,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:11:06 BasicIcfg [2020-12-22 11:11:06,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:11:06,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:11:06,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:11:06,709 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:11:06,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:01" (3/4) ... [2020-12-22 11:11:06,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:11:06,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:11:06,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:11:06,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:11:06,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:11:06,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:11:06,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:06,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:06,767 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe021_tso.oepc.i-witness.graphml [2020-12-22 11:11:06,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:11:06,769 INFO L168 Benchmark]: Toolchain (without parser) took 6271.33 ms. Allocated memory was 154.1 MB in the beginning and 233.8 MB in the end (delta: 79.7 MB). Free memory was 128.2 MB in the beginning and 130.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,769 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:11:06,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.66 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 133.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 154.1 MB. Free memory was 133.3 MB in the beginning and 131.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,771 INFO L168 Benchmark]: Boogie Preprocessor took 28.78 ms. Allocated memory is still 154.1 MB. Free memory was 131.2 MB in the beginning and 130.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,772 INFO L168 Benchmark]: RCFGBuilder took 561.75 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 107.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,772 INFO L168 Benchmark]: TraceAbstraction took 4855.14 ms. Allocated memory was 154.1 MB in the beginning and 233.8 MB in the end (delta: 79.7 MB). Free memory was 107.6 MB in the beginning and 132.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,773 INFO L168 Benchmark]: Witness Printer took 58.79 ms. Allocated memory is still 233.8 MB. Free memory was 132.8 MB in the beginning and 130.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:06,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 707.66 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 133.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 154.1 MB. Free memory was 133.3 MB in the beginning and 131.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.78 ms. Allocated memory is still 154.1 MB. Free memory was 131.2 MB in the beginning and 130.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.75 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 107.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4855.14 ms. Allocated memory was 154.1 MB in the beginning and 233.8 MB in the end (delta: 79.7 MB). Free memory was 107.6 MB in the beginning and 132.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. * Witness Printer took 58.79 ms. Allocated memory is still 233.8 MB. Free memory was 132.8 MB in the beginning and 130.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 782 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 67 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 182 SDtfs, 182 SDslu, 307 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3756 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...