/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/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:08:08,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:08:08,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:08:08,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:08:08,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:08:08,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:08:08,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:08:08,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:08:08,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:08:08,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:08:08,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:08:08,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:08:08,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:08:08,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:08:08,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:08:08,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:08:08,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:08:08,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:08:08,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:08:08,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:08:08,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:08:08,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:08:08,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:08:08,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:08:08,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:08:08,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:08:08,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:08:08,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:08:08,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:08:08,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:08:08,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:08:08,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:08:08,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:08:08,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:08:08,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:08:08,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:08:08,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:08:08,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:08:08,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:08:08,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:08:08,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:08:08,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:08:08,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:08:08,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:08:08,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:08:08,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:08:08,859 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:08:08,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:08:08,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:08:08,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:08:08,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:08:08,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:08:08,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:08:08,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:08:08,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:08:08,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:08:08,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:08:08,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:08:08,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:08:08,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:08:08,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:08:08,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:08:08,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:08:08,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:08:08,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:08:08,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:08:08,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:08:08,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:08:09,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:08:09,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:08:09,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:08:09,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:08:09,287 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:08:09,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-12-22 11:08:09,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa311eb4d/c10e095e378541539a9c1193ed6705bc/FLAGdc6726b8d [2020-12-22 11:08:10,030 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:08:10,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-12-22 11:08:10,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa311eb4d/c10e095e378541539a9c1193ed6705bc/FLAGdc6726b8d [2020-12-22 11:08:10,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa311eb4d/c10e095e378541539a9c1193ed6705bc [2020-12-22 11:08:10,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:08:10,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:08:10,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:08:10,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:08:10,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:08:10,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:08:10" (1/1) ... [2020-12-22 11:08:10,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1082fff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:10, skipping insertion in model container [2020-12-22 11:08:10,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:08:10" (1/1) ... [2020-12-22 11:08:10,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:08:10,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:08:10,641 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/safe012_tso.oepc.i[950,963] [2020-12-22 11:08:10,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:08:10,945 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:08:10,965 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/safe012_tso.oepc.i[950,963] [2020-12-22 11:08:11,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:08:11,201 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:08:11,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11 WrapperNode [2020-12-22 11:08:11,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:08:11,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:08:11,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:08:11,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:08:11,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:08:11,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:08:11,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:08:11,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:08:11,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (1/1) ... [2020-12-22 11:08:11,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:08:11,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:08:11,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:08:11,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:08:11,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (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 11:08:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:08:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:08:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:08:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:08:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:08:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:08:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:08:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:08:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:08:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:08:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:08:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:08:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:08:11,424 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 11:08:12,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:08:12,061 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:08:12,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:12 BoogieIcfgContainer [2020-12-22 11:08:12,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:08:12,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:08:12,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:08:12,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:08:12,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:08:10" (1/3) ... [2020-12-22 11:08:12,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708a41b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:08:12, skipping insertion in model container [2020-12-22 11:08:12,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:11" (2/3) ... [2020-12-22 11:08:12,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708a41b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:08:12, skipping insertion in model container [2020-12-22 11:08:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:12" (3/3) ... [2020-12-22 11:08:12,074 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-12-22 11:08:12,084 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:08:12,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:08:12,090 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:08:12,092 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:08:12,151 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,152 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,152 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,152 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,152 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,156 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,156 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,161 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,161 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,164 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,164 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,170 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,170 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:12,193 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:08:12,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:08:12,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:08:12,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:08:12,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:08:12,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:08:12,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:08:12,257 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:08:12,257 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:08:12,257 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:08:12,274 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:08:12,277 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-22 11:08:12,280 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-22 11:08:12,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-22 11:08:12,364 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-22 11:08:12,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:08:12,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:08:12,374 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:08:15,051 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-22 11:08:15,166 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:08:15,415 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-22 11:08:15,527 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:08:15,874 INFO L131 LiptonReduction]: Checked pairs total: 2541 [2020-12-22 11:08:15,874 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-22 11:08:15,881 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-22 11:08:15,907 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-22 11:08:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-22 11:08:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:08:15,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:15,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:15,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 995547002, now seen corresponding path program 1 times [2020-12-22 11:08:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:15,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364324094] [2020-12-22 11:08:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:16,253 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 11:08:16,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364324094] [2020-12-22 11:08:16,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:16,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:08:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313442330] [2020-12-22 11:08:16,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:08:16,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:16,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:08:16,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:08:16,278 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-22 11:08:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:16,327 INFO L93 Difference]: Finished difference Result 354 states and 982 transitions. [2020-12-22 11:08:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:08:16,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 11:08:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:16,344 INFO L225 Difference]: With dead ends: 354 [2020-12-22 11:08:16,345 INFO L226 Difference]: Without dead ends: 230 [2020-12-22 11:08:16,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:08:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-22 11:08:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-12-22 11:08:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-12-22 11:08:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-12-22 11:08:16,417 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-12-22 11:08:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:16,418 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-12-22 11:08:16,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:08:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-12-22 11:08:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:08:16,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:16,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:16,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:08:16,421 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:16,422 INFO L82 PathProgramCache]: Analyzing trace with hash 755699245, now seen corresponding path program 1 times [2020-12-22 11:08:16,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:16,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962809441] [2020-12-22 11:08:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:16,529 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 11:08:16,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962809441] [2020-12-22 11:08:16,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:16,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:16,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897786602] [2020-12-22 11:08:16,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:16,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,533 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 4 states. [2020-12-22 11:08:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:16,553 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2020-12-22 11:08:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:08:16,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:08:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:16,557 INFO L225 Difference]: With dead ends: 218 [2020-12-22 11:08:16,557 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 11:08:16,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 11:08:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-22 11:08:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 11:08:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-22 11:08:16,592 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 9 [2020-12-22 11:08:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:16,594 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-22 11:08:16,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:16,594 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-22 11:08:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:08:16,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:16,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:16,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:08:16,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash 797195438, now seen corresponding path program 1 times [2020-12-22 11:08:16,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:16,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144685513] [2020-12-22 11:08:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:16,720 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 11:08:16,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144685513] [2020-12-22 11:08:16,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:16,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:16,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630411313] [2020-12-22 11:08:16,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:16,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,726 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-12-22 11:08:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:16,745 INFO L93 Difference]: Finished difference Result 206 states and 559 transitions. [2020-12-22 11:08:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:08:16,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:08:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:16,749 INFO L225 Difference]: With dead ends: 206 [2020-12-22 11:08:16,749 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 11:08:16,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 11:08:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-22 11:08:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 11:08:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-22 11:08:16,767 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 9 [2020-12-22 11:08:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:16,767 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-22 11:08:16,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-22 11:08:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:08:16,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:16,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:16,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:08:16,770 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:16,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:16,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1951849563, now seen corresponding path program 1 times [2020-12-22 11:08:16,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:16,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240149005] [2020-12-22 11:08:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:16,840 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 11:08:16,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240149005] [2020-12-22 11:08:16,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:16,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:16,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398797391] [2020-12-22 11:08:16,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:16,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:16,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,845 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 4 states. [2020-12-22 11:08:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:16,865 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-12-22 11:08:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:08:16,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 11:08:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:16,867 INFO L225 Difference]: With dead ends: 242 [2020-12-22 11:08:16,867 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 11:08:16,868 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 11:08:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 11:08:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-22 11:08:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:08:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-12-22 11:08:16,877 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 10 [2020-12-22 11:08:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:16,878 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-12-22 11:08:16,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-12-22 11:08:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:08:16,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:16,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:16,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:08:16,880 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1600577641, now seen corresponding path program 1 times [2020-12-22 11:08:16,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:16,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94360709] [2020-12-22 11:08:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:16,926 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 11:08:16,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94360709] [2020-12-22 11:08:16,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:16,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:16,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060914819] [2020-12-22 11:08:16,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:16,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:16,929 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-12-22 11:08:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:16,944 INFO L93 Difference]: Finished difference Result 140 states and 326 transitions. [2020-12-22 11:08:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:08:16,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:08:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:16,946 INFO L225 Difference]: With dead ends: 140 [2020-12-22 11:08:16,946 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 11:08:16,946 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 11:08:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 11:08:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-22 11:08:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 11:08:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-12-22 11:08:16,955 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-12-22 11:08:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:16,955 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-12-22 11:08:16,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-12-22 11:08:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:08:16,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:16,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:16,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:08:16,957 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash -936336033, now seen corresponding path program 1 times [2020-12-22 11:08:16,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:16,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436280130] [2020-12-22 11:08:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:17,067 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 11:08:17,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436280130] [2020-12-22 11:08:17,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:17,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:17,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383769591] [2020-12-22 11:08:17,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:17,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:17,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:17,077 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-12-22 11:08:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:17,126 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-12-22 11:08:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:08:17,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 11:08:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:17,128 INFO L225 Difference]: With dead ends: 81 [2020-12-22 11:08:17,128 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 11:08:17,129 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 11:08:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 11:08:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-22 11:08:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 11:08:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-12-22 11:08:17,140 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-12-22 11:08:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:17,140 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-12-22 11:08:17,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-12-22 11:08:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:08:17,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:17,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:17,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:08:17,144 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:17,149 INFO L82 PathProgramCache]: Analyzing trace with hash -316991516, now seen corresponding path program 1 times [2020-12-22 11:08:17,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:17,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997845311] [2020-12-22 11:08:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:17,252 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 11:08:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997845311] [2020-12-22 11:08:17,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:17,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:08:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33006785] [2020-12-22 11:08:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:08:17,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:08:17,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:08:17,255 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-12-22 11:08:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:17,294 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-12-22 11:08:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:08:17,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:08:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:17,297 INFO L225 Difference]: With dead ends: 60 [2020-12-22 11:08:17,297 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 11:08:17,298 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 11:08:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 11:08:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 11:08:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 11:08:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-12-22 11:08:17,302 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-12-22 11:08:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:17,303 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-12-22 11:08:17,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:08:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-12-22 11:08:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:08:17,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:17,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:17,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:08:17,309 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1258778714, now seen corresponding path program 1 times [2020-12-22 11:08:17,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:17,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991911196] [2020-12-22 11:08:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:17,371 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 11:08:17,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991911196] [2020-12-22 11:08:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:08:17,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121519948] [2020-12-22 11:08:17,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:08:17,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:17,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:08:17,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:08:17,374 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-12-22 11:08:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:17,434 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-12-22 11:08:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:08:17,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 11:08:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:17,444 INFO L225 Difference]: With dead ends: 42 [2020-12-22 11:08:17,444 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 11:08:17,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:08:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 11:08:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 11:08:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 11:08:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-12-22 11:08:17,450 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-12-22 11:08:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:17,450 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-12-22 11:08:17,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:08:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-12-22 11:08:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 11:08:17,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:17,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:17,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:08:17,452 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1439842373, now seen corresponding path program 1 times [2020-12-22 11:08:17,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:17,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506569859] [2020-12-22 11:08:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:17,547 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 11:08:17,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506569859] [2020-12-22 11:08:17,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:08:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95893722] [2020-12-22 11:08:17,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:17,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:17,552 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-12-22 11:08:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:17,570 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-12-22 11:08:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:08:17,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-22 11:08:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:17,571 INFO L225 Difference]: With dead ends: 35 [2020-12-22 11:08:17,571 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:08:17,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:08:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:08:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:08:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:08:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:08:17,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-22 11:08:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:17,573 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:08:17,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:08:17,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:08:17,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:08:17,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:08:17 BasicIcfg [2020-12-22 11:08:17,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:08:17,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:08:17,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:08:17,579 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:08:17,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:12" (3/4) ... [2020-12-22 11:08:17,584 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:08:17,591 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:08:17,591 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:08:17,592 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:08:17,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:08:17,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:08:17,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:08:17,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:08:17,663 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe012_tso.oepc.i-witness.graphml [2020-12-22 11:08:17,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:08:17,664 INFO L168 Benchmark]: Toolchain (without parser) took 7360.58 ms. Allocated memory was 156.2 MB in the beginning and 226.5 MB in the end (delta: 70.3 MB). Free memory was 130.0 MB in the beginning and 154.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,665 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.6 MB in the beginning and 129.5 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:08:17,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 891.39 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 131.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.41 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 129.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,671 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 156.2 MB. Free memory was 129.3 MB in the beginning and 127.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,673 INFO L168 Benchmark]: RCFGBuilder took 758.46 ms. Allocated memory is still 156.2 MB. Free memory was 127.7 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,673 INFO L168 Benchmark]: TraceAbstraction took 5512.49 ms. Allocated memory was 156.2 MB in the beginning and 226.5 MB in the end (delta: 70.3 MB). Free memory was 105.2 MB in the beginning and 157.6 MB in the end (delta: -52.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,674 INFO L168 Benchmark]: Witness Printer took 84.62 ms. Allocated memory is still 226.5 MB. Free memory was 157.1 MB in the beginning and 154.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:17,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.6 MB in the beginning and 129.5 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 891.39 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 131.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 71.41 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 129.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 156.2 MB. Free memory was 129.3 MB in the beginning and 127.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 758.46 ms. Allocated memory is still 156.2 MB. Free memory was 127.7 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5512.49 ms. Allocated memory was 156.2 MB in the beginning and 226.5 MB in the end (delta: 70.3 MB). Free memory was 105.2 MB in the beginning and 157.6 MB in the end (delta: -52.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Witness Printer took 84.62 ms. Allocated memory is still 226.5 MB. Free memory was 157.1 MB in the beginning and 154.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2541 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 144 SDtfs, 182 SDslu, 131 SDs, 0 SdLazy, 74 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 5262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...