/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/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:11:38,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:11:38,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:11:38,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:11:38,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:11:38,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:11:38,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:11:38,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:11:38,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:11:38,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:11:38,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:11:38,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:11:38,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:11:38,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:11:38,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:11:38,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:11:38,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:11:38,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:11:38,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:11:38,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:11:38,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:11:38,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:11:38,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:11:38,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:11:38,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:11:38,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:11:38,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:11:38,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:11:38,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:11:38,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:11:38,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:11:38,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:11:38,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:11:38,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:11:38,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:11:38,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:11:38,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:11:38,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:11:38,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:11:38,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:11:38,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:11:38,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:11:38,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:11:38,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:11:38,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:11:38,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:11:38,717 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:11:38,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:11:38,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:11:38,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:11:38,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:11:38,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:11:38,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:11:38,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:11:38,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:11:38,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:11:38,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:11:38,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:11:38,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:11:38,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:11:38,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:11:38,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:11:38,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:11:38,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:11:38,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:11:38,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:11:38,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:11:38,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:11:39,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:11:39,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:11:39,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:11:39,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:11:39,204 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:11:39,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-12-22 11:11:39,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33551351d/5625d2f589534192b3dbd8830b5d3dc6/FLAG80bd22d88 [2020-12-22 11:11:39,985 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:11:39,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-12-22 11:11:40,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33551351d/5625d2f589534192b3dbd8830b5d3dc6/FLAG80bd22d88 [2020-12-22 11:11:40,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33551351d/5625d2f589534192b3dbd8830b5d3dc6 [2020-12-22 11:11:40,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:11:40,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:11:40,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:40,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:11:40,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:11:40,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:40,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f61394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40, skipping insertion in model container [2020-12-22 11:11:40,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:40,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:11:40,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:11:40,482 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/safe024_tso.oepc.i[950,963] [2020-12-22 11:11:40,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:40,743 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:11:40,758 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/safe024_tso.oepc.i[950,963] [2020-12-22 11:11:40,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:40,919 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:11:40,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40 WrapperNode [2020-12-22 11:11:40,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:40,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:40,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:11:40,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:11:40,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:40,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:41,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:11:41,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:11:41,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:11:41,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... [2020-12-22 11:11:41,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:11:41,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:11:41,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:11:41,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:11:41,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:11:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:11:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:11:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:11:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:11:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:11:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:11:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:11:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:11:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:11:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:11:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:11:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:11:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:11:41,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:11:41,221 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:11:41,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:11:41,742 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:11:41,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:41 BoogieIcfgContainer [2020-12-22 11:11:41,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:11:41,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:11:41,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:11:41,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:11:41,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:11:40" (1/3) ... [2020-12-22 11:11:41,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226ebf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:41, skipping insertion in model container [2020-12-22 11:11:41,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:40" (2/3) ... [2020-12-22 11:11:41,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226ebf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:41, skipping insertion in model container [2020-12-22 11:11:41,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:41" (3/3) ... [2020-12-22 11:11:41,755 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2020-12-22 11:11:41,763 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:11:41,764 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:11:41,770 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:11:41,771 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:11:41,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,821 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:41,826 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:11:41,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:11:41,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:11:41,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:11:41,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:11:41,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:11:41,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:11:41,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:11:41,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:11:41,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:11:41,887 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:11:41,890 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-22 11:11:41,893 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-22 11:11:41,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-22 11:11:41,943 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-22 11:11:41,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:11:41,949 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 55 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 11:11:41,952 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:11:44,315 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 11:11:45,004 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:11:45,113 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:11:45,341 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:11:45,449 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:11:45,515 INFO L131 LiptonReduction]: Checked pairs total: 2787 [2020-12-22 11:11:45,515 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-22 11:11:45,523 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:11:45,573 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:11:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:11:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:11:45,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:45,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:45,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash -661732023, now seen corresponding path program 1 times [2020-12-22 11:11:45,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:45,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45136161] [2020-12-22 11:11:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:45,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45136161] [2020-12-22 11:11:45,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:45,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:45,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251653579] [2020-12-22 11:11:45,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:11:45,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:11:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:45,847 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:11:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:45,887 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:11:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:11:45,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:11:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:45,922 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:11:45,922 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:11:45,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:11:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:11:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:11:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:11:46,036 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:11:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:46,038 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:11:46,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:11:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:11:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:11:46,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:46,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:46,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:11:46,041 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:46,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 961112404, now seen corresponding path program 1 times [2020-12-22 11:11:46,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:46,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283100420] [2020-12-22 11:11:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:46,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283100420] [2020-12-22 11:11:46,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:46,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:46,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461644673] [2020-12-22 11:11:46,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:46,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:46,222 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:11:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:46,268 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-22 11:11:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:46,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:11:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:46,276 INFO L225 Difference]: With dead ends: 330 [2020-12-22 11:11:46,276 INFO L226 Difference]: Without dead ends: 266 [2020-12-22 11:11:46,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-22 11:11:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-22 11:11:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-22 11:11:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-22 11:11:46,317 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-22 11:11:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:46,317 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-22 11:11:46,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-22 11:11:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:11:46,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:46,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:46,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:11:46,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:46,322 INFO L82 PathProgramCache]: Analyzing trace with hash -270319833, now seen corresponding path program 1 times [2020-12-22 11:11:46,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:46,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191036614] [2020-12-22 11:11:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:46,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191036614] [2020-12-22 11:11:46,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:46,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:46,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964129508] [2020-12-22 11:11:46,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:46,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:46,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:46,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:46,457 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-22 11:11:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:46,507 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-12-22 11:11:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:46,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:11:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:46,509 INFO L225 Difference]: With dead ends: 314 [2020-12-22 11:11:46,509 INFO L226 Difference]: Without dead ends: 170 [2020-12-22 11:11:46,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:11:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-22 11:11:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-22 11:11:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-22 11:11:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-22 11:11:46,519 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-12-22 11:11:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:46,519 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-22 11:11:46,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-22 11:11:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:11:46,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:46,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:46,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:11:46,522 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2076633207, now seen corresponding path program 1 times [2020-12-22 11:11:46,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:46,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190081061] [2020-12-22 11:11:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:46,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190081061] [2020-12-22 11:11:46,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:46,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:46,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990136799] [2020-12-22 11:11:46,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:46,613 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-22 11:11:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:46,649 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-12-22 11:11:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:11:46,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:11:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:46,651 INFO L225 Difference]: With dead ends: 183 [2020-12-22 11:11:46,652 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 11:11:46,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 11:11:46,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-22 11:11:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 11:11:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-12-22 11:11:46,659 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-12-22 11:11:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:46,660 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-12-22 11:11:46,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-12-22 11:11:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:11:46,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:46,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:46,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:11:46,673 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash 593138453, now seen corresponding path program 1 times [2020-12-22 11:11:46,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:46,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415929043] [2020-12-22 11:11:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:46,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415929043] [2020-12-22 11:11:46,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:46,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:46,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675015364] [2020-12-22 11:11:46,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:46,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:46,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:46,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:46,815 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-12-22 11:11:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:46,865 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-12-22 11:11:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:46,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:11:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:46,867 INFO L225 Difference]: With dead ends: 129 [2020-12-22 11:11:46,867 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 11:11:46,868 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 11:11:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 11:11:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-22 11:11:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 11:11:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-12-22 11:11:46,872 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-12-22 11:11:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:46,873 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-12-22 11:11:46,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-12-22 11:11:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:11:46,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:46,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:46,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:11:46,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:46,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:46,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1258270807, now seen corresponding path program 1 times [2020-12-22 11:11:46,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:46,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494318804] [2020-12-22 11:11:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:46,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494318804] [2020-12-22 11:11:46,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:46,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:11:46,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841366496] [2020-12-22 11:11:46,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:11:46,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:46,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:11:46,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:11:46,989 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-12-22 11:11:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:47,054 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-12-22 11:11:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:47,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 11:11:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:47,056 INFO L225 Difference]: With dead ends: 93 [2020-12-22 11:11:47,056 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 11:11:47,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 11:11:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 11:11:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-22 11:11:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 11:11:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-12-22 11:11:47,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-12-22 11:11:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:47,060 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-12-22 11:11:47,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:11:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-12-22 11:11:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:11:47,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:47,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:47,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:11:47,062 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1011219395, now seen corresponding path program 1 times [2020-12-22 11:11:47,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:47,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113942692] [2020-12-22 11:11:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:47,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113942692] [2020-12-22 11:11:47,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:47,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:47,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353163499] [2020-12-22 11:11:47,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:47,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:47,130 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-12-22 11:11:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:47,209 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-12-22 11:11:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:47,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:11:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:47,211 INFO L225 Difference]: With dead ends: 99 [2020-12-22 11:11:47,211 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 11:11:47,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 11:11:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-12-22 11:11:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 11:11:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-22 11:11:47,220 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 18 [2020-12-22 11:11:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:47,220 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-22 11:11:47,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-22 11:11:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:11:47,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:47,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:47,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:11:47,221 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1578916891, now seen corresponding path program 2 times [2020-12-22 11:11:47,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:47,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842261430] [2020-12-22 11:11:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:47,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842261430] [2020-12-22 11:11:47,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:47,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:47,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907349358] [2020-12-22 11:11:47,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:47,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:47,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:47,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:47,285 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 5 states. [2020-12-22 11:11:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:47,317 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-22 11:11:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:47,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:11:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:47,318 INFO L225 Difference]: With dead ends: 67 [2020-12-22 11:11:47,318 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 11:11:47,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 11:11:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 11:11:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 11:11:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-22 11:11:47,321 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-22 11:11:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:47,322 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-22 11:11:47,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-22 11:11:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:11:47,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:47,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:47,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:11:47,323 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 577230555, now seen corresponding path program 3 times [2020-12-22 11:11:47,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:47,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026796093] [2020-12-22 11:11:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:47,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026796093] [2020-12-22 11:11:47,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:47,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:47,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607895193] [2020-12-22 11:11:47,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:47,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:47,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:47,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:47,381 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-22 11:11:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:47,405 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-22 11:11:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:47,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:11:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:47,406 INFO L225 Difference]: With dead ends: 36 [2020-12-22 11:11:47,406 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:11:47,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:11:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:11:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:11:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:11:47,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:11:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:47,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:11:47,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:11:47,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:11:47,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:11:47,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:11:47 BasicIcfg [2020-12-22 11:11:47,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:11:47,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:11:47,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:11:47,413 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:11:47,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:41" (3/4) ... [2020-12-22 11:11:47,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:11:47,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:11:47,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:11:47,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:11:47,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:11:47,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:11:47,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:47,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:47,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe024_tso.oepc.i-witness.graphml [2020-12-22 11:11:47,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:11:47,486 INFO L168 Benchmark]: Toolchain (without parser) took 7254.30 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.4 MB in the beginning and 163.3 MB in the end (delta: -37.9 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,487 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:11:47,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 126.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 124.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,489 INFO L168 Benchmark]: Boogie Preprocessor took 63.61 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 123.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,489 INFO L168 Benchmark]: RCFGBuilder took 654.99 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 101.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,490 INFO L168 Benchmark]: TraceAbstraction took 5665.13 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.7 MB in the beginning and 165.9 MB in the end (delta: -65.3 MB). Peak memory consumption was 1.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,491 INFO L168 Benchmark]: Witness Printer took 72.14 ms. Allocated memory is still 218.1 MB. Free memory was 165.9 MB in the beginning and 163.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:47,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 687.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 126.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 99.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 124.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.61 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 123.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 654.99 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 101.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5665.13 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.7 MB in the beginning and 165.9 MB in the end (delta: -65.3 MB). Peak memory consumption was 1.8 MB. Max. memory is 8.0 GB. * Witness Printer took 72.14 ms. Allocated memory is still 218.1 MB. Free memory was 165.9 MB in the beginning and 163.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 867 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 84 PlacesBefore, 32 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2787 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: 5.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 184 SDtfs, 240 SDslu, 291 SDs, 0 SdLazy, 85 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 4834 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...