/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:44:10,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:44:10,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:44:10,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:44:10,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:44:10,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:44:10,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:44:10,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:44:10,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:44:10,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:44:10,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:44:10,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:44:10,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:44:10,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:44:10,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:44:10,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:44:10,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:44:10,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:44:10,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:44:10,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:44:10,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:44:10,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:44:10,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:44:10,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:44:10,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 15:44:10,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 15:44:10,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 15:44:10,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 15:44:10,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 15:44:10,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 15:44:10,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:44:10,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:44:10,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:44:10,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:44:10,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:44:10,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:44:10,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:44:10,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:44:10,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:44:10,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:44:10,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:44:10,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:44:10,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:44:10,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:44:10,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:44:10,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:44:10,545 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:44:10,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:44:10,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:44:10,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:44:10,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:44:10,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:44:10,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:44:10,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:44:10,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:44:10,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:44:10,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:44:10,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:44:10,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:44:10,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:44:10,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:44:10,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:44:10,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:44:10,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:44:10,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:44:10,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:44:10,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:44:10,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:44:10,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:44:10,553 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:44:10,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:44:10,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:44:10,553 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:44:11,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:44:11,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:44:11,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:44:11,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:44:11,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:44:11,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-11-09 15:44:11,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d2832314/01b7f14d2f68422c93b19ae8944d74c1/FLAG41018d7e9 [2020-11-09 15:44:11,965 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:44:11,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-11-09 15:44:11,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d2832314/01b7f14d2f68422c93b19ae8944d74c1/FLAG41018d7e9 [2020-11-09 15:44:12,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d2832314/01b7f14d2f68422c93b19ae8944d74c1 [2020-11-09 15:44:12,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:44:12,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:44:12,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:44:12,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:44:12,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:44:12,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:44:12" (1/1) ... [2020-11-09 15:44:12,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3332d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:12, skipping insertion in model container [2020-11-09 15:44:12,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:44:12" (1/1) ... [2020-11-09 15:44:12,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:44:12,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:44:12,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:44:12,817 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:44:12,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:44:13,023 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:44:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13 WrapperNode [2020-11-09 15:44:13,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:44:13,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:44:13,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:44:13,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:44:13,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:44:13,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:44:13,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:44:13,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:44:13,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (1/1) ... [2020-11-09 15:44:13,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:44:13,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:44:13,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:44:13,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:44:13,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (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 [2020-11-09 15:44:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:44:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:44:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:44:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:44:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:44:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:44:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:44:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:44:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:44:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:44:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:44:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:44:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:44:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:44:13,198 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:44:13,592 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:44:13,592 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:44:13,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:44:13 BoogieIcfgContainer [2020-11-09 15:44:13,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:44:13,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:44:13,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:44:13,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:44:13,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:44:12" (1/3) ... [2020-11-09 15:44:13,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e959f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:44:13, skipping insertion in model container [2020-11-09 15:44:13,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:44:13" (2/3) ... [2020-11-09 15:44:13,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e959f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:44:13, skipping insertion in model container [2020-11-09 15:44:13,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:44:13" (3/3) ... [2020-11-09 15:44:13,605 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-11-09 15:44:13,623 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:44:13,623 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:44:13,627 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:44:13,628 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:44:13,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:44:13,688 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:44:13,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:44:13,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:44:13,727 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:44:13,727 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:44:13,727 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:44:13,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:44:13,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:44:13,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:44:13,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:44:13,742 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:44:13,743 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 15:44:13,747 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 15:44:13,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-09 15:44:13,812 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-09 15:44:13,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:44:13,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:44:13,819 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:44:15,286 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-09 15:44:16,249 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 15:44:16,824 WARN L194 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:44:17,162 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:44:17,341 INFO L131 LiptonReduction]: Checked pairs total: 3066 [2020-11-09 15:44:17,342 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-09 15:44:17,349 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:44:17,386 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:44:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:44:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:44:17,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:17,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:17,400 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash 147242941, now seen corresponding path program 1 times [2020-11-09 15:44:17,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:17,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244621636] [2020-11-09 15:44:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:17,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244621636] [2020-11-09 15:44:17,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:17,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:44:17,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1779913459] [2020-11-09 15:44:17,707 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:17,710 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:17,723 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:44:17,723 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:17,728 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:44:17,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:44:17,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:44:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:44:17,749 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:44:17,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:17,773 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:44:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:44:17,775 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:44:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:17,792 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:44:17,792 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:44:17,794 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 [2020-11-09 15:44:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:44:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:44:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:44:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:44:17,879 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:44:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:17,880 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:44:17,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:44:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:44:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:44:17,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:17,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:17,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:44:17,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash 269557700, now seen corresponding path program 1 times [2020-11-09 15:44:17,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:17,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054444684] [2020-11-09 15:44:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:18,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054444684] [2020-11-09 15:44:18,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:18,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:44:18,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1501136191] [2020-11-09 15:44:18,030 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:18,031 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:18,037 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:44:18,037 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:18,038 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:44:18,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:44:18,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:18,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:44:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:44:18,043 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-09 15:44:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:18,102 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-09 15:44:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:44:18,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:44:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:18,107 INFO L225 Difference]: With dead ends: 217 [2020-11-09 15:44:18,107 INFO L226 Difference]: Without dead ends: 217 [2020-11-09 15:44:18,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:44:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-09 15:44:18,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-09 15:44:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-09 15:44:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-09 15:44:18,126 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-09 15:44:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:18,127 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-09 15:44:18,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:44:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-09 15:44:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:44:18,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:18,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:18,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:44:18,129 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1876534856, now seen corresponding path program 1 times [2020-11-09 15:44:18,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:18,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572746666] [2020-11-09 15:44:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:18,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572746666] [2020-11-09 15:44:18,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:18,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:44:18,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [266371882] [2020-11-09 15:44:18,196 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:18,197 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:18,199 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 15:44:18,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:18,336 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2429#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:44:18,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:44:18,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:44:18,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:44:18,338 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-11-09 15:44:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:18,364 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-09 15:44:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:44:18,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:44:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:18,366 INFO L225 Difference]: With dead ends: 136 [2020-11-09 15:44:18,366 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 15:44:18,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:44:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 15:44:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 15:44:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 15:44:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 15:44:18,375 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 15:44:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:18,375 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 15:44:18,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:44:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 15:44:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:44:18,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:18,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:18,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:44:18,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:18,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1466848330, now seen corresponding path program 1 times [2020-11-09 15:44:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:18,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856774736] [2020-11-09 15:44:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:18,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856774736] [2020-11-09 15:44:18,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:18,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:44:18,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [973160467] [2020-11-09 15:44:18,497 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:18,502 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:18,508 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 93 transitions. [2020-11-09 15:44:18,508 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:18,731 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2843#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:44:18,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:44:18,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:18,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:44:18,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:44:18,733 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 15:44:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:18,769 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-09 15:44:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:44:18,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 15:44:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:18,770 INFO L225 Difference]: With dead ends: 109 [2020-11-09 15:44:18,770 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 15:44:18,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:44:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 15:44:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 15:44:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 15:44:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 15:44:18,776 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 15:44:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:18,777 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 15:44:18,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:44:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 15:44:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:44:18,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:18,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:18,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:44:18,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash -182122517, now seen corresponding path program 1 times [2020-11-09 15:44:18,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:18,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956877874] [2020-11-09 15:44:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:18,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956877874] [2020-11-09 15:44:18,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:18,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:44:18,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482655260] [2020-11-09 15:44:18,852 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:18,854 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:18,865 INFO L252 McrAutomatonBuilder]: Finished intersection with 77 states and 141 transitions. [2020-11-09 15:44:18,865 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:18,875 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:44:18,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:44:18,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:44:18,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:44:18,877 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 15:44:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:18,900 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-09 15:44:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:44:18,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:44:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:18,902 INFO L225 Difference]: With dead ends: 135 [2020-11-09 15:44:18,902 INFO L226 Difference]: Without dead ends: 85 [2020-11-09 15:44:18,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:44:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-09 15:44:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-09 15:44:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-09 15:44:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-11-09 15:44:18,907 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-11-09 15:44:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:18,908 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-11-09 15:44:18,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:44:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-11-09 15:44:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:44:18,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:18,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:18,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:44:18,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1711993673, now seen corresponding path program 2 times [2020-11-09 15:44:18,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:18,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600039097] [2020-11-09 15:44:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:18,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600039097] [2020-11-09 15:44:18,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:18,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:44:18,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [89923743] [2020-11-09 15:44:18,965 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:18,967 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:18,978 INFO L252 McrAutomatonBuilder]: Finished intersection with 77 states and 136 transitions. [2020-11-09 15:44:18,979 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:18,984 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:44:18,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:44:18,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:18,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:44:18,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:44:18,986 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-11-09 15:44:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:19,008 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-09 15:44:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:44:19,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:44:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:19,009 INFO L225 Difference]: With dead ends: 99 [2020-11-09 15:44:19,009 INFO L226 Difference]: Without dead ends: 37 [2020-11-09 15:44:19,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:44:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-09 15:44:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-09 15:44:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 15:44:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-09 15:44:19,012 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-11-09 15:44:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:19,013 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-09 15:44:19,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:44:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-09 15:44:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:44:19,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:44:19,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:44:19,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:44:19,014 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:44:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:44:19,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1121061337, now seen corresponding path program 3 times [2020-11-09 15:44:19,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:44:19,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124365887] [2020-11-09 15:44:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:44:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:44:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:44:19,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124365887] [2020-11-09 15:44:19,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:44:19,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:44:19,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [868427041] [2020-11-09 15:44:19,109 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:44:19,112 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:44:19,124 INFO L252 McrAutomatonBuilder]: Finished intersection with 77 states and 129 transitions. [2020-11-09 15:44:19,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:44:19,126 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:44:19,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:44:19,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:44:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:44:19,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:44:19,127 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 4 states. [2020-11-09 15:44:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:44:19,145 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-09 15:44:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:44:19,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:44:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:44:19,146 INFO L225 Difference]: With dead ends: 36 [2020-11-09 15:44:19,146 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:44:19,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:44:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:44:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:44:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:44:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:44:19,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 15:44:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:44:19,148 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:44:19,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:44:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:44:19,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:44:19,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:44:19,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:44:19 BasicIcfg [2020-11-09 15:44:19,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:44:19,155 INFO L168 Benchmark]: Toolchain (without parser) took 6964.70 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 129.7 MB in the beginning and 154.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:44:19,156 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.8 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:44:19,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.22 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 130.0 MB in the end (delta: -867.5 kB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-11-09 15:44:19,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 128.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:44:19,158 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 127.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:44:19,159 INFO L168 Benchmark]: RCFGBuilder took 491.23 ms. Allocated memory is still 154.1 MB. Free memory was 126.9 MB in the beginning and 105.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:44:19,160 INFO L168 Benchmark]: TraceAbstraction took 5556.20 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 105.0 MB in the beginning and 154.7 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:44:19,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.8 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 827.22 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 130.0 MB in the end (delta: -867.5 kB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 128.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 127.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 491.23 ms. Allocated memory is still 154.1 MB. Free memory was 126.9 MB in the beginning and 105.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5556.20 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 105.0 MB in the beginning and 154.7 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 744 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 84 PlacesBefore, 32 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 3066 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 128 SDtfs, 58 SDslu, 179 SDs, 0 SdLazy, 56 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...