/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/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:05:05,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:05:05,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:05:05,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:05:05,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:05:05,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:05:05,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:05:05,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:05:05,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:05:05,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:05:05,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:05:05,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:05:05,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:05:05,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:05:05,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:05:05,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:05:05,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:05:05,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:05:05,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:05:05,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:05:05,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:05:05,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:05:05,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:05:05,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:05:05,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:05:05,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:05:05,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:05:05,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:05:05,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:05:05,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:05:05,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:05:05,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:05:05,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:05:05,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:05:05,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:05:05,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:05:05,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:05:05,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:05:05,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:05:05,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:05:05,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:05:05,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:05:05,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:05:05,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:05:05,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:05:05,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:05:05,721 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:05:05,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:05:05,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:05:05,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:05:05,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:05:05,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:05:05,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:05:05,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:05:05,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:05:05,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:05:05,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:05:05,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:05:05,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:05:05,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:05:05,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:05:05,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:05:05,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:05:05,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:05:05,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:05:05,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:05:05,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:05:05,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:05:06,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:05:06,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:05:06,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:05:06,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:05:06,307 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:05:06,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-12-22 11:05:06,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e329603/b195222c0bf14a2eb7b5f9a432042d9c/FLAG9a8873515 [2020-12-22 11:05:07,042 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:05:07,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-12-22 11:05:07,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e329603/b195222c0bf14a2eb7b5f9a432042d9c/FLAG9a8873515 [2020-12-22 11:05:07,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e329603/b195222c0bf14a2eb7b5f9a432042d9c [2020-12-22 11:05:07,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:05:07,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:05:07,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:05:07,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:05:07,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:05:07,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:05:07" (1/1) ... [2020-12-22 11:05:07,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6b772a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:07, skipping insertion in model container [2020-12-22 11:05:07,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:05:07" (1/1) ... [2020-12-22 11:05:07,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:05:07,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:05:07,582 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/safe001_tso.oepc.i[950,963] [2020-12-22 11:05:07,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:05:07,869 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:05:07,889 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/safe001_tso.oepc.i[950,963] [2020-12-22 11:05:07,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:05:08,093 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:05:08,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08 WrapperNode [2020-12-22 11:05:08,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:05:08,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:05:08,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:05:08,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:05:08,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:05:08,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:05:08,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:05:08,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:05:08,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (1/1) ... [2020-12-22 11:05:08,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:05:08,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:05:08,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:05:08,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:05:08,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (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 11:05:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:05:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:05:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:05:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:05:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:05:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:05:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:05:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:05:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:05:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:05:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:05:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:05:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:05:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:05:08,340 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 11:05:08,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:05:08,868 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:05:08,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:05:08 BoogieIcfgContainer [2020-12-22 11:05:08,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:05:08,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:05:08,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:05:08,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:05:08,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:05:07" (1/3) ... [2020-12-22 11:05:08,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5e45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:05:08, skipping insertion in model container [2020-12-22 11:05:08,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:05:08" (2/3) ... [2020-12-22 11:05:08,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5e45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:05:08, skipping insertion in model container [2020-12-22 11:05:08,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:05:08" (3/3) ... [2020-12-22 11:05:08,889 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-12-22 11:05:08,901 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:05:08,901 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:05:08,906 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:05:08,908 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:05:08,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,995 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:08,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,003 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,004 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,006 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,006 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,013 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,014 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,035 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:05:09,046 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:05:09,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:05:09,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:05:09,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:05:09,107 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:05:09,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:05:09,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:05:09,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:05:09,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:05:09,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:05:09,128 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:05:09,130 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:05:09,134 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:05:09,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-22 11:05:09,202 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-22 11:05:09,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:05:09,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:05:09,210 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:05:12,101 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:05:12,414 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:05:12,517 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 11:05:12,543 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2020-12-22 11:05:12,544 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-22 11:05:12,552 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:05:12,597 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:05:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:05:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:05:12,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:12,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:12,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2020-12-22 11:05:12,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:12,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513077261] [2020-12-22 11:05:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:12,814 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 11:05:12,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513077261] [2020-12-22 11:05:12,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:12,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:05:12,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178464447] [2020-12-22 11:05:12,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:05:12,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:05:12,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:05:12,841 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:05:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:12,879 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:05:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:05:12,882 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:05:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:12,910 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:05:12,910 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:05:12,912 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 11:05:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:05:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:05:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:05:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:05:13,008 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:05:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:13,009 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:05:13,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:05:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:05:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:05:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:13,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:13,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:05:13,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2020-12-22 11:05:13,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:13,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467669260] [2020-12-22 11:05:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:13,175 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 11:05:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467669260] [2020-12-22 11:05:13,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:05:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583498213] [2020-12-22 11:05:13,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:05:13,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:05:13,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:05:13,185 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:05:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:13,272 INFO L93 Difference]: Finished difference Result 541 states and 1484 transitions. [2020-12-22 11:05:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:05:13,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:05:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:13,282 INFO L225 Difference]: With dead ends: 541 [2020-12-22 11:05:13,283 INFO L226 Difference]: Without dead ends: 410 [2020-12-22 11:05:13,284 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 11:05:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-12-22 11:05:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 340. [2020-12-22 11:05:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-22 11:05:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 937 transitions. [2020-12-22 11:05:13,368 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 937 transitions. Word has length 9 [2020-12-22 11:05:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:13,370 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 937 transitions. [2020-12-22 11:05:13,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:05:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 937 transitions. [2020-12-22 11:05:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:05:13,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:13,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:13,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:05:13,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2020-12-22 11:05:13,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:13,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114579611] [2020-12-22 11:05:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:13,519 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 11:05:13,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114579611] [2020-12-22 11:05:13,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:13,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:13,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742408118] [2020-12-22 11:05:13,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:13,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:13,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:13,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:13,522 INFO L87 Difference]: Start difference. First operand 340 states and 937 transitions. Second operand 5 states. [2020-12-22 11:05:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:13,580 INFO L93 Difference]: Finished difference Result 455 states and 1174 transitions. [2020-12-22 11:05:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:13,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:05:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:13,584 INFO L225 Difference]: With dead ends: 455 [2020-12-22 11:05:13,585 INFO L226 Difference]: Without dead ends: 366 [2020-12-22 11:05:13,585 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 11:05:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-12-22 11:05:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 294. [2020-12-22 11:05:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-22 11:05:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 797 transitions. [2020-12-22 11:05:13,600 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 797 transitions. Word has length 10 [2020-12-22 11:05:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:13,600 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 797 transitions. [2020-12-22 11:05:13,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 797 transitions. [2020-12-22 11:05:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:05:13,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:13,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:13,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:05:13,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:13,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:13,604 INFO L82 PathProgramCache]: Analyzing trace with hash 996933044, now seen corresponding path program 1 times [2020-12-22 11:05:13,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:13,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310123978] [2020-12-22 11:05:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:13,697 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 11:05:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310123978] [2020-12-22 11:05:13,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:13,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:13,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291123533] [2020-12-22 11:05:13,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:13,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:13,700 INFO L87 Difference]: Start difference. First operand 294 states and 797 transitions. Second operand 5 states. [2020-12-22 11:05:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:13,758 INFO L93 Difference]: Finished difference Result 410 states and 1048 transitions. [2020-12-22 11:05:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:13,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:05:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:13,762 INFO L225 Difference]: With dead ends: 410 [2020-12-22 11:05:13,762 INFO L226 Difference]: Without dead ends: 344 [2020-12-22 11:05:13,763 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 11:05:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-22 11:05:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 278. [2020-12-22 11:05:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-22 11:05:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-12-22 11:05:13,775 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 11 [2020-12-22 11:05:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:13,776 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-12-22 11:05:13,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-12-22 11:05:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:05:13,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:13,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:13,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:05:13,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2020-12-22 11:05:13,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217755194] [2020-12-22 11:05:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:13,857 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 11:05:13,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217755194] [2020-12-22 11:05:13,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:13,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:13,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835094583] [2020-12-22 11:05:13,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:13,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:13,860 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 5 states. [2020-12-22 11:05:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:13,912 INFO L93 Difference]: Finished difference Result 372 states and 946 transitions. [2020-12-22 11:05:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:13,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:05:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:13,915 INFO L225 Difference]: With dead ends: 372 [2020-12-22 11:05:13,915 INFO L226 Difference]: Without dead ends: 318 [2020-12-22 11:05:13,916 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 11:05:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-22 11:05:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 250. [2020-12-22 11:05:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-22 11:05:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 657 transitions. [2020-12-22 11:05:13,928 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 657 transitions. Word has length 11 [2020-12-22 11:05:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:13,928 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 657 transitions. [2020-12-22 11:05:13,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 657 transitions. [2020-12-22 11:05:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:05:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:13,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:13,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:05:13,930 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2020-12-22 11:05:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:13,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832995821] [2020-12-22 11:05:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:13,998 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 11:05:13,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832995821] [2020-12-22 11:05:13,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:13,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588580516] [2020-12-22 11:05:13,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:13,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:14,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:14,000 INFO L87 Difference]: Start difference. First operand 250 states and 657 transitions. Second operand 5 states. [2020-12-22 11:05:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,054 INFO L93 Difference]: Finished difference Result 335 states and 834 transitions. [2020-12-22 11:05:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:14,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:05:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,057 INFO L225 Difference]: With dead ends: 335 [2020-12-22 11:05:14,057 INFO L226 Difference]: Without dead ends: 292 [2020-12-22 11:05:14,058 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 11:05:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-22 11:05:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-12-22 11:05:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-22 11:05:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 616 transitions. [2020-12-22 11:05:14,068 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 616 transitions. Word has length 12 [2020-12-22 11:05:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,068 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 616 transitions. [2020-12-22 11:05:14,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 616 transitions. [2020-12-22 11:05:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:05:14,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:05:14,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash 796278870, now seen corresponding path program 1 times [2020-12-22 11:05:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771347093] [2020-12-22 11:05:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,141 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 11:05:14,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771347093] [2020-12-22 11:05:14,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:05:14,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848393238] [2020-12-22 11:05:14,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:05:14,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:05:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:05:14,144 INFO L87 Difference]: Start difference. First operand 238 states and 616 transitions. Second operand 6 states. [2020-12-22 11:05:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,223 INFO L93 Difference]: Finished difference Result 368 states and 909 transitions. [2020-12-22 11:05:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:05:14,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 11:05:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,229 INFO L225 Difference]: With dead ends: 368 [2020-12-22 11:05:14,229 INFO L226 Difference]: Without dead ends: 212 [2020-12-22 11:05:14,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:05:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-22 11:05:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 180. [2020-12-22 11:05:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-22 11:05:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-12-22 11:05:14,239 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 13 [2020-12-22 11:05:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,239 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-12-22 11:05:14,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:05:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-12-22 11:05:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:05:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:05:14,241 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 1 times [2020-12-22 11:05:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874773929] [2020-12-22 11:05:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,378 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 11:05:14,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874773929] [2020-12-22 11:05:14,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:05:14,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410317190] [2020-12-22 11:05:14,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:05:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:05:14,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:05:14,384 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 6 states. [2020-12-22 11:05:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,430 INFO L93 Difference]: Finished difference Result 256 states and 608 transitions. [2020-12-22 11:05:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:05:14,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 11:05:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,436 INFO L225 Difference]: With dead ends: 256 [2020-12-22 11:05:14,436 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 11:05:14,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:05:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 11:05:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2020-12-22 11:05:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 11:05:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 316 transitions. [2020-12-22 11:05:14,443 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 316 transitions. Word has length 13 [2020-12-22 11:05:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,443 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 316 transitions. [2020-12-22 11:05:14,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:05:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 316 transitions. [2020-12-22 11:05:14,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:05:14,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:05:14,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,446 INFO L82 PathProgramCache]: Analyzing trace with hash 383190448, now seen corresponding path program 1 times [2020-12-22 11:05:14,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384571724] [2020-12-22 11:05:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,554 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 11:05:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384571724] [2020-12-22 11:05:14,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:05:14,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409040602] [2020-12-22 11:05:14,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:14,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:14,560 INFO L87 Difference]: Start difference. First operand 132 states and 316 transitions. Second operand 5 states. [2020-12-22 11:05:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,613 INFO L93 Difference]: Finished difference Result 162 states and 361 transitions. [2020-12-22 11:05:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:14,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:05:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,616 INFO L225 Difference]: With dead ends: 162 [2020-12-22 11:05:14,616 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 11:05:14,616 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 11:05:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 11:05:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2020-12-22 11:05:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:05:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 270 transitions. [2020-12-22 11:05:14,623 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 270 transitions. Word has length 13 [2020-12-22 11:05:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,623 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 270 transitions. [2020-12-22 11:05:14,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 270 transitions. [2020-12-22 11:05:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:05:14,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:05:14,625 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2020-12-22 11:05:14,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601670312] [2020-12-22 11:05:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,705 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 11:05:14,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601670312] [2020-12-22 11:05:14,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:14,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508244333] [2020-12-22 11:05:14,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:05:14,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:05:14,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:05:14,708 INFO L87 Difference]: Start difference. First operand 116 states and 270 transitions. Second operand 4 states. [2020-12-22 11:05:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,741 INFO L93 Difference]: Finished difference Result 135 states and 288 transitions. [2020-12-22 11:05:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:05:14,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:05:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,743 INFO L225 Difference]: With dead ends: 135 [2020-12-22 11:05:14,743 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 11:05:14,743 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 11:05:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 11:05:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-22 11:05:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 11:05:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 215 transitions. [2020-12-22 11:05:14,749 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 215 transitions. Word has length 14 [2020-12-22 11:05:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,749 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 215 transitions. [2020-12-22 11:05:14,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:05:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 215 transitions. [2020-12-22 11:05:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:05:14,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:05:14,751 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2020-12-22 11:05:14,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032993174] [2020-12-22 11:05:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,827 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 11:05:14,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032993174] [2020-12-22 11:05:14,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:05:14,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082942088] [2020-12-22 11:05:14,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:14,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:14,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:14,832 INFO L87 Difference]: Start difference. First operand 101 states and 215 transitions. Second operand 5 states. [2020-12-22 11:05:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:14,868 INFO L93 Difference]: Finished difference Result 99 states and 191 transitions. [2020-12-22 11:05:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:05:14,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:05:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:14,870 INFO L225 Difference]: With dead ends: 99 [2020-12-22 11:05:14,870 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 11:05:14,870 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 11:05:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 11:05:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-22 11:05:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 11:05:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 142 transitions. [2020-12-22 11:05:14,873 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 142 transitions. Word has length 15 [2020-12-22 11:05:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:14,874 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 142 transitions. [2020-12-22 11:05:14,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 142 transitions. [2020-12-22 11:05:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:05:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:14,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:14,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:05:14,877 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:14,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2020-12-22 11:05:14,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:14,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416644924] [2020-12-22 11:05:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:14,946 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 11:05:14,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416644924] [2020-12-22 11:05:14,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:14,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:05:14,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565626267] [2020-12-22 11:05:14,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:05:14,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:14,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:05:14,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:05:14,949 INFO L87 Difference]: Start difference. First operand 76 states and 142 transitions. Second operand 6 states. [2020-12-22 11:05:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:15,000 INFO L93 Difference]: Finished difference Result 69 states and 126 transitions. [2020-12-22 11:05:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:15,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:05:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:15,001 INFO L225 Difference]: With dead ends: 69 [2020-12-22 11:05:15,001 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 11:05:15,002 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 11:05:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 11:05:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 11:05:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 11:05:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-22 11:05:15,004 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 16 [2020-12-22 11:05:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:15,005 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-22 11:05:15,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:05:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-22 11:05:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:05:15,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:15,006 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 11:05:15,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:05:15,006 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash 202097967, now seen corresponding path program 1 times [2020-12-22 11:05:15,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:15,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430301945] [2020-12-22 11:05:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:15,043 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 11:05:15,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430301945] [2020-12-22 11:05:15,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:15,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:15,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024082050] [2020-12-22 11:05:15,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:05:15,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:15,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:05:15,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:05:15,046 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 4 states. [2020-12-22 11:05:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:15,058 INFO L93 Difference]: Finished difference Result 52 states and 96 transitions. [2020-12-22 11:05:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:05:15,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 11:05:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:15,059 INFO L225 Difference]: With dead ends: 52 [2020-12-22 11:05:15,059 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:05:15,060 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 11:05:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:05:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:05:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:05:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:05:15,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:05:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:15,061 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:05:15,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:05:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:05:15,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:05:15,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:05:15,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:05:15 BasicIcfg [2020-12-22 11:05:15,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:05:15,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:05:15,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:05:15,067 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:05:15,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:05:08" (3/4) ... [2020-12-22 11:05:15,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:05:15,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:05:15,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:05:15,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:05:15,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:05:15,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:05:15,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:05:15,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:05:15,125 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe001_tso.oepc.i-witness.graphml [2020-12-22 11:05:15,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:05:15,127 INFO L168 Benchmark]: Toolchain (without parser) took 7794.18 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 131.5 MB in the beginning and 113.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 91.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,127 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 131.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:05:15,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.09 ms. Allocated memory is still 158.3 MB. Free memory was 131.3 MB in the beginning and 131.9 MB in the end (delta: -607.2 kB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.40 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 129.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,129 INFO L168 Benchmark]: Boogie Preprocessor took 51.70 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 128.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,130 INFO L168 Benchmark]: RCFGBuilder took 634.67 ms. Allocated memory is still 158.3 MB. Free memory was 128.3 MB in the beginning and 106.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,130 INFO L168 Benchmark]: TraceAbstraction took 6186.55 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 105.8 MB in the beginning and 116.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 62.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,131 INFO L168 Benchmark]: Witness Printer took 59.09 ms. Allocated memory is still 229.6 MB. Free memory was 115.6 MB in the beginning and 113.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:15,134 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 158.3 MB. Free memory was 131.5 MB in the beginning and 131.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 759.09 ms. Allocated memory is still 158.3 MB. Free memory was 131.3 MB in the beginning and 131.9 MB in the end (delta: -607.2 kB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 91.40 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 129.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.70 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 128.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 634.67 ms. Allocated memory is still 158.3 MB. Free memory was 128.3 MB in the beginning and 106.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6186.55 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 105.8 MB in the beginning and 116.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 62.0 MB. Max. memory is 8.0 GB. * Witness Printer took 59.09 ms. Allocated memory is still 229.6 MB. Free memory was 115.6 MB in the beginning and 113.0 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 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 302 SDtfs, 320 SDslu, 515 SDs, 0 SdLazy, 234 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s 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, 13 MinimizatonAttempts, 398 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 7208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...