/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/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:13:07,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:13:07,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:13:07,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:13:07,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:13:07,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:13:07,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:13:07,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:13:07,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:13:07,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:13:07,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:13:07,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:13:07,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:13:07,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:13:07,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:13:07,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:13:07,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:13:07,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:13:07,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:13:07,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:13:07,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:13:07,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:13:07,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:13:07,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:13:07,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:13:07,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:13:07,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:13:07,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:13:07,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:13:07,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:13:07,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:13:07,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:13:07,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:13:07,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:13:07,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:13:07,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:13:07,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:13:07,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:13:07,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:13:07,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:13:07,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:13:07,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:13:07,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:13:07,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:13:07,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:13:07,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:13:07,594 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:13:07,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:13:07,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:13:07,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:13:07,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:13:07,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:13:07,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:13:07,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:13:07,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:13:07,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:13:07,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:13:07,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:13:07,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:13:07,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:13:07,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:13:07,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:13:07,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:13:07,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:13:07,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:13:07,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:13:07,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:13:07,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:13:08,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:13:08,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:13:08,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:13:08,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:13:08,061 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:13:08,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-12-22 11:13:08,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28ca3e80/b0c787537cd04095b325d51382538cd2/FLAG1634d6e0c [2020-12-22 11:13:08,838 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:13:08,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-12-22 11:13:08,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28ca3e80/b0c787537cd04095b325d51382538cd2/FLAG1634d6e0c [2020-12-22 11:13:09,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28ca3e80/b0c787537cd04095b325d51382538cd2 [2020-12-22 11:13:09,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:13:09,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:13:09,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:09,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:13:09,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:13:09,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fac5354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09, skipping insertion in model container [2020-12-22 11:13:09,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:13:09,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:13:09,340 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/safe030_tso.oepc.i[950,963] [2020-12-22 11:13:09,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:09,609 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:13:09,626 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/safe030_tso.oepc.i[950,963] [2020-12-22 11:13:09,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:09,840 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:13:09,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09 WrapperNode [2020-12-22 11:13:09,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:09,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:09,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:13:09,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:13:09,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:09,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:13:09,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:13:09,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:13:09,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:09,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (1/1) ... [2020-12-22 11:13:10,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:13:10,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:13:10,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:13:10,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:13:10,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (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 11:13:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:13:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:13:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:13:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:13:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:13:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:13:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:13:10,135 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:13:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:13:10,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:13:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:13:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:13:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:13:10,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:13:10,139 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 11:13:10,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:13:10,567 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:13:10,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:10 BoogieIcfgContainer [2020-12-22 11:13:10,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:13:10,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:13:10,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:13:10,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:13:10,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:13:09" (1/3) ... [2020-12-22 11:13:10,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62167b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:10, skipping insertion in model container [2020-12-22 11:13:10,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:09" (2/3) ... [2020-12-22 11:13:10,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62167b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:10, skipping insertion in model container [2020-12-22 11:13:10,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:10" (3/3) ... [2020-12-22 11:13:10,579 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2020-12-22 11:13:10,586 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:13:10,587 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:13:10,592 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:13:10,593 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:13:10,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,630 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,630 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,630 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,630 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,631 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,631 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,638 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,638 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,643 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,644 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,646 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,646 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:10,649 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:13:10,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:13:10,688 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:13:10,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:13:10,689 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:13:10,689 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:13:10,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:13:10,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:13:10,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:13:10,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:13:10,703 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:13:10,706 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-22 11:13:10,709 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-22 11:13:10,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-22 11:13:10,762 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-22 11:13:10,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:13:10,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:13:10,770 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:13:13,171 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 11:13:13,366 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 11:13:13,821 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-22 11:13:14,124 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-22 11:13:14,248 INFO L131 LiptonReduction]: Checked pairs total: 2703 [2020-12-22 11:13:14,248 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-22 11:13:14,256 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:13:14,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:13:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:13:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:13:14,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:14,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:14,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1511125318, now seen corresponding path program 1 times [2020-12-22 11:13:14,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:14,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170513200] [2020-12-22 11:13:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:14,597 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 11:13:14,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170513200] [2020-12-22 11:13:14,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:14,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009859983] [2020-12-22 11:13:14,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:13:14,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:13:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:13:14,633 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:13:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:14,682 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:13:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:13:14,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:13:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:14,703 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:13:14,703 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:13:14,705 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 11:13:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:13:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:13:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:13:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:13:14,795 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:13:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:14,796 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:13:14,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:13:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:13:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:13:14,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:14,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:14,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:13:14,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash -399770224, now seen corresponding path program 1 times [2020-12-22 11:13:14,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:14,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127846145] [2020-12-22 11:13:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:13:14,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127846145] [2020-12-22 11:13:14,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:14,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:14,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233933355] [2020-12-22 11:13:14,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:14,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:14,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:14,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:14,994 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:13:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:15,095 INFO L93 Difference]: Finished difference Result 518 states and 1456 transitions. [2020-12-22 11:13:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:15,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:13:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:15,104 INFO L225 Difference]: With dead ends: 518 [2020-12-22 11:13:15,104 INFO L226 Difference]: Without dead ends: 372 [2020-12-22 11:13:15,105 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 11:13:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-12-22 11:13:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 312. [2020-12-22 11:13:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-22 11:13:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2020-12-22 11:13:15,165 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 9 [2020-12-22 11:13:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2020-12-22 11:13:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2020-12-22 11:13:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:13:15,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:15,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:15,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:13:15,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875187, now seen corresponding path program 1 times [2020-12-22 11:13:15,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:15,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239992556] [2020-12-22 11:13:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:15,308 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 11:13:15,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239992556] [2020-12-22 11:13:15,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:15,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:15,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027078862] [2020-12-22 11:13:15,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:15,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:15,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:15,312 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 5 states. [2020-12-22 11:13:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:15,392 INFO L93 Difference]: Finished difference Result 430 states and 1110 transitions. [2020-12-22 11:13:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:15,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:13:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:15,397 INFO L225 Difference]: With dead ends: 430 [2020-12-22 11:13:15,397 INFO L226 Difference]: Without dead ends: 346 [2020-12-22 11:13:15,398 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 11:13:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-22 11:13:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 290. [2020-12-22 11:13:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-22 11:13:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 762 transitions. [2020-12-22 11:13:15,417 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 762 transitions. Word has length 10 [2020-12-22 11:13:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:15,418 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 762 transitions. [2020-12-22 11:13:15,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 762 transitions. [2020-12-22 11:13:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:13:15,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:15,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:15,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:13:15,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash 345922742, now seen corresponding path program 1 times [2020-12-22 11:13:15,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:15,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40107819] [2020-12-22 11:13:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:15,530 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 11:13:15,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40107819] [2020-12-22 11:13:15,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:15,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:15,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738413157] [2020-12-22 11:13:15,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:15,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:15,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:15,536 INFO L87 Difference]: Start difference. First operand 290 states and 762 transitions. Second operand 5 states. [2020-12-22 11:13:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:15,600 INFO L93 Difference]: Finished difference Result 392 states and 1001 transitions. [2020-12-22 11:13:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:15,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:13:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:15,604 INFO L225 Difference]: With dead ends: 392 [2020-12-22 11:13:15,605 INFO L226 Difference]: Without dead ends: 326 [2020-12-22 11:13:15,605 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 11:13:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-22 11:13:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-12-22 11:13:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-22 11:13:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 698 transitions. [2020-12-22 11:13:15,618 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 698 transitions. Word has length 10 [2020-12-22 11:13:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:15,619 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 698 transitions. [2020-12-22 11:13:15,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 698 transitions. [2020-12-22 11:13:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:13:15,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:15,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:15,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:13:15,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2133634442, now seen corresponding path program 1 times [2020-12-22 11:13:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:15,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676565346] [2020-12-22 11:13:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:15,701 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 11:13:15,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676565346] [2020-12-22 11:13:15,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:15,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:15,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065175532] [2020-12-22 11:13:15,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:15,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:15,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:15,704 INFO L87 Difference]: Start difference. First operand 270 states and 698 transitions. Second operand 5 states. [2020-12-22 11:13:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:15,772 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2020-12-22 11:13:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:15,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:13:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:15,775 INFO L225 Difference]: With dead ends: 356 [2020-12-22 11:13:15,775 INFO L226 Difference]: Without dead ends: 312 [2020-12-22 11:13:15,776 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 11:13:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-22 11:13:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 260. [2020-12-22 11:13:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-22 11:13:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 664 transitions. [2020-12-22 11:13:15,786 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 664 transitions. Word has length 11 [2020-12-22 11:13:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:15,787 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 664 transitions. [2020-12-22 11:13:15,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 664 transitions. [2020-12-22 11:13:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:13:15,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:15,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:15,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:13:15,791 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash -399190841, now seen corresponding path program 1 times [2020-12-22 11:13:15,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:15,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298944498] [2020-12-22 11:13:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:15,883 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 11:13:15,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298944498] [2020-12-22 11:13:15,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:15,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:15,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120635264] [2020-12-22 11:13:15,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:15,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:15,887 INFO L87 Difference]: Start difference. First operand 260 states and 664 transitions. Second operand 4 states. [2020-12-22 11:13:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:15,915 INFO L93 Difference]: Finished difference Result 362 states and 875 transitions. [2020-12-22 11:13:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:15,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:13:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:15,919 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:13:15,919 INFO L226 Difference]: Without dead ends: 284 [2020-12-22 11:13:15,920 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 11:13:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-12-22 11:13:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2020-12-22 11:13:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-22 11:13:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2020-12-22 11:13:15,933 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2020-12-22 11:13:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:15,933 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2020-12-22 11:13:15,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2020-12-22 11:13:15,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:13:15,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:15,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:15,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:13:15,935 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash -932777299, now seen corresponding path program 1 times [2020-12-22 11:13:15,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:15,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434261291] [2020-12-22 11:13:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:16,036 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 11:13:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434261291] [2020-12-22 11:13:16,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:16,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:16,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336172401] [2020-12-22 11:13:16,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:16,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:16,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:16,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:16,042 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 4 states. [2020-12-22 11:13:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:16,084 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2020-12-22 11:13:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:16,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:13:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:16,087 INFO L225 Difference]: With dead ends: 248 [2020-12-22 11:13:16,087 INFO L226 Difference]: Without dead ends: 187 [2020-12-22 11:13:16,088 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 11:13:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-22 11:13:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-22 11:13:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-22 11:13:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2020-12-22 11:13:16,099 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2020-12-22 11:13:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:16,099 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2020-12-22 11:13:16,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2020-12-22 11:13:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:13:16,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:16,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:16,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:13:16,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1335013917, now seen corresponding path program 1 times [2020-12-22 11:13:16,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:16,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963801859] [2020-12-22 11:13:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:16,159 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 11:13:16,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963801859] [2020-12-22 11:13:16,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:16,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:16,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525695677] [2020-12-22 11:13:16,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:16,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:16,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:16,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:16,183 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand 5 states. [2020-12-22 11:13:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:16,235 INFO L93 Difference]: Finished difference Result 267 states and 539 transitions. [2020-12-22 11:13:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:16,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:13:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:16,238 INFO L225 Difference]: With dead ends: 267 [2020-12-22 11:13:16,238 INFO L226 Difference]: Without dead ends: 221 [2020-12-22 11:13:16,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:13:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-22 11:13:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2020-12-22 11:13:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 11:13:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2020-12-22 11:13:16,248 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2020-12-22 11:13:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:16,248 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2020-12-22 11:13:16,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2020-12-22 11:13:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:13:16,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:16,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:16,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:13:16,250 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:16,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1081898830, now seen corresponding path program 1 times [2020-12-22 11:13:16,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:16,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940877680] [2020-12-22 11:13:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:16,305 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 11:13:16,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940877680] [2020-12-22 11:13:16,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:16,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:16,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739473635] [2020-12-22 11:13:16,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:16,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:16,308 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand 5 states. [2020-12-22 11:13:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:16,357 INFO L93 Difference]: Finished difference Result 258 states and 510 transitions. [2020-12-22 11:13:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:16,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:13:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:16,359 INFO L225 Difference]: With dead ends: 258 [2020-12-22 11:13:16,360 INFO L226 Difference]: Without dead ends: 212 [2020-12-22 11:13:16,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:13:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-22 11:13:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2020-12-22 11:13:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-22 11:13:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2020-12-22 11:13:16,369 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2020-12-22 11:13:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:16,369 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2020-12-22 11:13:16,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2020-12-22 11:13:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:13:16,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:16,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:16,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:13:16,371 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:16,372 INFO L82 PathProgramCache]: Analyzing trace with hash -144595800, now seen corresponding path program 1 times [2020-12-22 11:13:16,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:16,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114515939] [2020-12-22 11:13:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:16,431 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 11:13:16,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114515939] [2020-12-22 11:13:16,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:16,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:16,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265887912] [2020-12-22 11:13:16,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:16,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:16,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:16,434 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand 5 states. [2020-12-22 11:13:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:16,476 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2020-12-22 11:13:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:13:16,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:13:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:16,478 INFO L225 Difference]: With dead ends: 147 [2020-12-22 11:13:16,478 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 11:13:16,479 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 11:13:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 11:13:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-22 11:13:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 11:13:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2020-12-22 11:13:16,483 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2020-12-22 11:13:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:16,483 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2020-12-22 11:13:16,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2020-12-22 11:13:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:13:16,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:16,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:16,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:13:16,484 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1619656222, now seen corresponding path program 1 times [2020-12-22 11:13:16,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:16,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002087104] [2020-12-22 11:13:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:16,546 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 11:13:16,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002087104] [2020-12-22 11:13:16,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:16,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:13:16,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773385562] [2020-12-22 11:13:16,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:13:16,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:13:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:13:16,549 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand 6 states. [2020-12-22 11:13:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:16,581 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2020-12-22 11:13:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:13:16,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:13:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:16,582 INFO L225 Difference]: With dead ends: 82 [2020-12-22 11:13:16,582 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:13:16,582 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 11:13:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:13:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:13:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:13:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:13:16,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 11:13:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:16,583 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:13:16,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:13:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:13:16,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:13:16,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:13:16,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:13:16 BasicIcfg [2020-12-22 11:13:16,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:13:16,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:13:16,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:13:16,589 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:13:16,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:10" (3/4) ... [2020-12-22 11:13:16,593 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:13:16,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:13:16,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:13:16,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:13:16,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:13:16,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:13:16,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:16,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:16,657 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe030_tso.oepc.i-witness.graphml [2020-12-22 11:13:16,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:13:16,659 INFO L168 Benchmark]: Toolchain (without parser) took 7586.78 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 125.0 MB in the beginning and 138.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,659 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:13:16,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 126.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 124.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,661 INFO L168 Benchmark]: Boogie Preprocessor took 59.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 123.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,667 INFO L168 Benchmark]: RCFGBuilder took 564.84 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 101.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,668 INFO L168 Benchmark]: TraceAbstraction took 6016.54 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 100.5 MB in the beginning and 140.7 MB in the end (delta: -40.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,669 INFO L168 Benchmark]: Witness Printer took 68.84 ms. Allocated memory is still 220.2 MB. Free memory was 140.7 MB in the beginning and 138.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:16,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 767.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 126.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 100.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 124.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 123.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.84 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 101.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6016.54 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 100.5 MB in the beginning and 140.7 MB in the end (delta: -40.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. * Witness Printer took 68.84 ms. Allocated memory is still 220.2 MB. Free memory was 140.7 MB in the beginning and 138.1 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 805 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2703 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 297 SDtfs, 279 SDslu, 464 SDs, 0 SdLazy, 155 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 358 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...