/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:23:26,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:23:26,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:23:26,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:23:26,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:23:26,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:23:26,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:23:26,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:23:26,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:23:26,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:23:26,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:23:26,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:23:26,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:23:26,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:23:26,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:23:26,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:23:26,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:23:26,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:23:26,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:23:26,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:23:26,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:23:26,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:23:26,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:23:26,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:23:26,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:23:26,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:23:26,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:23:26,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:23:26,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:23:26,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:23:26,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:23:26,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:23:26,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:23:26,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:23:26,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:23:26,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:23:26,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:23:26,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:23:26,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:23:26,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:23:26,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:23:26,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:23:26,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:23:26,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:23:26,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:23:26,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:23:26,519 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:23:26,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:23:26,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:23:26,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:23:26,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:23:26,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:23:26,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:23:26,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:23:26,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:23:26,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:23:26,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:23:26,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:23:26,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:23:26,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:23:26,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:23:26,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:23:26,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:23:26,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:23:26,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:23:26,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:23:26,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:23:26,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:23:26,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:23:26,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:23:26,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:23:26,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:23:27,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:23:27,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:23:27,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:23:27,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:23:27,063 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:23:27,065 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-09-11 15:23:27,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2251c6d5/0ac27b1d3f3e48fb8a4e3da92c04a1ba/FLAG626626b31 [2020-09-11 15:23:27,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:23:27,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-09-11 15:23:27,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2251c6d5/0ac27b1d3f3e48fb8a4e3da92c04a1ba/FLAG626626b31 [2020-09-11 15:23:28,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2251c6d5/0ac27b1d3f3e48fb8a4e3da92c04a1ba [2020-09-11 15:23:28,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:23:28,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:23:28,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:23:28,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:23:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:23:28,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6fcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28, skipping insertion in model container [2020-09-11 15:23:28,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:23:28,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:23:28,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:23:28,686 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:23:28,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:23:28,865 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:23:28,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28 WrapperNode [2020-09-11 15:23:28,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:23:28,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:23:28,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:23:28,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:23:28,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:23:28,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:23:28,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:23:28,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:23:28,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... [2020-09-11 15:23:28,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:23:28,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:23:28,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:23:28,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:23:28,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:23:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:23:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:23:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:23:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:23:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:23:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:23:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:23:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:23:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:23:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:23:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:23:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:23:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:23:29,036 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:23:29,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:23:29,455 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:23:29,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:23:29 BoogieIcfgContainer [2020-09-11 15:23:29,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:23:29,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:23:29,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:23:29,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:23:29,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:23:28" (1/3) ... [2020-09-11 15:23:29,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45287093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:23:29, skipping insertion in model container [2020-09-11 15:23:29,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:23:28" (2/3) ... [2020-09-11 15:23:29,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45287093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:23:29, skipping insertion in model container [2020-09-11 15:23:29,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:23:29" (3/3) ... [2020-09-11 15:23:29,470 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-09-11 15:23:29,483 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:23:29,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:23:29,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:23:29,495 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:23:29,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,542 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:23:29,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:23:29,600 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:23:29,601 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:23:29,601 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:23:29,601 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:23:29,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:23:29,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:23:29,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:23:29,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:23:29,618 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-11 15:23:29,620 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:23:29,666 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:23:29,666 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:23:29,672 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:23:29,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:23:29,696 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:23:29,697 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:23:29,697 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:23:29,699 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:23:29,701 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:23:31,517 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-09-11 15:23:31,518 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 15:23:31,523 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:23:31,551 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:23:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:23:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:23:31,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:31,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:31,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:31,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-09-11 15:23:31,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:31,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719471496] [2020-09-11 15:23:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:31,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719471496] [2020-09-11 15:23:31,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:31,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:23:31,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331680191] [2020-09-11 15:23:31,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:23:31,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:31,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:23:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:31,890 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:23:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:31,993 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 15:23:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:23:31,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:23:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,029 INFO L225 Difference]: With dead ends: 282 [2020-09-11 15:23:32,030 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 15:23:32,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 15:23:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 15:23:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 15:23:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 15:23:32,116 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 15:23:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,117 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 15:23:32,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:23:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 15:23:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:23:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:23:32,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-09-11 15:23:32,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267887897] [2020-09-11 15:23:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267887897] [2020-09-11 15:23:32,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:23:32,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311015515] [2020-09-11 15:23:32,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:23:32,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:23:32,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,220 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-11 15:23:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,243 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-11 15:23:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:23:32,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:23:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,248 INFO L225 Difference]: With dead ends: 202 [2020-09-11 15:23:32,248 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 15:23:32,249 INFO L675 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 [2020-09-11 15:23:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 15:23:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 15:23:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 15:23:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 15:23:32,267 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-11 15:23:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,267 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 15:23:32,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:23:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 15:23:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:23:32,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:23:32,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,270 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-09-11 15:23:32,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392557186] [2020-09-11 15:23:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392557186] [2020-09-11 15:23:32,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:23:32,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241435838] [2020-09-11 15:23:32,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:23:32,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:23:32,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,340 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 15:23:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,349 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-09-11 15:23:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:23:32,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 15:23:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,351 INFO L225 Difference]: With dead ends: 198 [2020-09-11 15:23:32,352 INFO L226 Difference]: Without dead ends: 198 [2020-09-11 15:23:32,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-11 15:23:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-11 15:23:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-11 15:23:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-09-11 15:23:32,366 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-09-11 15:23:32,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,367 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-09-11 15:23:32,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:23:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-09-11 15:23:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:23:32,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:23:32,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-09-11 15:23:32,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458768476] [2020-09-11 15:23:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458768476] [2020-09-11 15:23:32,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:23:32,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181916398] [2020-09-11 15:23:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:23:32,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:23:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,460 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-09-11 15:23:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,469 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-09-11 15:23:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:23:32,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 15:23:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,472 INFO L225 Difference]: With dead ends: 192 [2020-09-11 15:23:32,472 INFO L226 Difference]: Without dead ends: 192 [2020-09-11 15:23:32,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-11 15:23:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-11 15:23:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-11 15:23:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-09-11 15:23:32,485 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-09-11 15:23:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,486 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-09-11 15:23:32,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:23:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-09-11 15:23:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:23:32,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:23:32,488 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-09-11 15:23:32,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947873256] [2020-09-11 15:23:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947873256] [2020-09-11 15:23:32,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:23:32,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841560932] [2020-09-11 15:23:32,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:23:32,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:23:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:23:32,630 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-09-11 15:23:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,675 INFO L93 Difference]: Finished difference Result 224 states and 554 transitions. [2020-09-11 15:23:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:23:32,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:23:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,677 INFO L225 Difference]: With dead ends: 224 [2020-09-11 15:23:32,677 INFO L226 Difference]: Without dead ends: 160 [2020-09-11 15:23:32,678 INFO L675 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 [2020-09-11 15:23:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-11 15:23:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-09-11 15:23:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-11 15:23:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 383 transitions. [2020-09-11 15:23:32,686 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 383 transitions. Word has length 12 [2020-09-11 15:23:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,686 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 383 transitions. [2020-09-11 15:23:32,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:23:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 383 transitions. [2020-09-11 15:23:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:23:32,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:23:32,689 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-09-11 15:23:32,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025214945] [2020-09-11 15:23:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025214945] [2020-09-11 15:23:32,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:23:32,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466158640] [2020-09-11 15:23:32,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:23:32,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:23:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:23:32,795 INFO L87 Difference]: Start difference. First operand 160 states and 383 transitions. Second operand 5 states. [2020-09-11 15:23:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,853 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-09-11 15:23:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:23:32,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:23:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,855 INFO L225 Difference]: With dead ends: 160 [2020-09-11 15:23:32,855 INFO L226 Difference]: Without dead ends: 123 [2020-09-11 15:23:32,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:23:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-11 15:23:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-11 15:23:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-11 15:23:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-11 15:23:32,868 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 13 [2020-09-11 15:23:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,869 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-11 15:23:32,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:23:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-11 15:23:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:23:32,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:23:32,872 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-09-11 15:23:32,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652788974] [2020-09-11 15:23:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652788974] [2020-09-11 15:23:32,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:23:32,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296430218] [2020-09-11 15:23:32,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:23:32,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:23:32,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:23:32,914 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-09-11 15:23:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:32,922 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-09-11 15:23:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:23:32,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 15:23:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:32,923 INFO L225 Difference]: With dead ends: 155 [2020-09-11 15:23:32,924 INFO L226 Difference]: Without dead ends: 124 [2020-09-11 15:23:32,924 INFO L675 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 [2020-09-11 15:23:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-11 15:23:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-11 15:23:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 15:23:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-09-11 15:23:32,929 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-09-11 15:23:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:32,929 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-09-11 15:23:32,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:23:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-09-11 15:23:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:23:32,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:32,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:32,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:23:32,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-09-11 15:23:32,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:32,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738197442] [2020-09-11 15:23:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:32,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738197442] [2020-09-11 15:23:32,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:32,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:23:32,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696502329] [2020-09-11 15:23:32,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:23:32,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:32,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:23:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:23:32,985 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-09-11 15:23:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:33,005 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-09-11 15:23:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:23:33,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 15:23:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:33,007 INFO L225 Difference]: With dead ends: 154 [2020-09-11 15:23:33,007 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 15:23:33,008 INFO L675 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 [2020-09-11 15:23:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 15:23:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-09-11 15:23:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-11 15:23:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-09-11 15:23:33,012 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-09-11 15:23:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:33,012 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-09-11 15:23:33,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:23:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-09-11 15:23:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:23:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:33,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:33,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:23:33,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:33,014 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-09-11 15:23:33,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:33,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552031586] [2020-09-11 15:23:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:33,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552031586] [2020-09-11 15:23:33,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:33,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:23:33,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291993628] [2020-09-11 15:23:33,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:23:33,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:33,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:23:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:23:33,129 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 6 states. [2020-09-11 15:23:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:33,188 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-09-11 15:23:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:23:33,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:23:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:33,189 INFO L225 Difference]: With dead ends: 110 [2020-09-11 15:23:33,190 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 15:23:33,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:23:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 15:23:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 15:23:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 15:23:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-11 15:23:33,193 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-09-11 15:23:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:33,194 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-11 15:23:33,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:23:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-11 15:23:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:23:33,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:33,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:33,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:23:33,196 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-09-11 15:23:33,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:33,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379312380] [2020-09-11 15:23:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:33,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379312380] [2020-09-11 15:23:33,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:33,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:23:33,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370618754] [2020-09-11 15:23:33,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:23:33,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:33,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:23:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:23:33,285 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-11 15:23:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:33,304 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-09-11 15:23:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:23:33,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:23:33,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:33,305 INFO L225 Difference]: With dead ends: 51 [2020-09-11 15:23:33,305 INFO L226 Difference]: Without dead ends: 30 [2020-09-11 15:23:33,306 INFO L675 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 [2020-09-11 15:23:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-11 15:23:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-11 15:23:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 15:23:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-11 15:23:33,308 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-11 15:23:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:33,309 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-11 15:23:33,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:23:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-11 15:23:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:23:33,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:23:33,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:23:33,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:23:33,310 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:23:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:23:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash -34011261, now seen corresponding path program 2 times [2020-09-11 15:23:33,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:23:33,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476624249] [2020-09-11 15:23:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:23:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:23:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:23:33,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476624249] [2020-09-11 15:23:33,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:23:33,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:23:33,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218811330] [2020-09-11 15:23:33,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:23:33,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:23:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:23:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:23:33,380 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-11 15:23:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:23:33,395 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-11 15:23:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:23:33,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:23:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:23:33,397 INFO L225 Difference]: With dead ends: 29 [2020-09-11 15:23:33,397 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:23:33,397 INFO L675 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 [2020-09-11 15:23:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:23:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:23:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:23:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:23:33,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:23:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:23:33,401 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:23:33,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:23:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:23:33,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:23:33,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 15:23:33,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:23:33 BasicIcfg [2020-09-11 15:23:33,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:23:33,410 INFO L168 Benchmark]: Toolchain (without parser) took 5370.67 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 101.7 MB in the beginning and 116.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 92.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,411 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.50 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 159.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.65 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,418 INFO L168 Benchmark]: Boogie Preprocessor took 31.85 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,420 INFO L168 Benchmark]: RCFGBuilder took 505.13 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,425 INFO L168 Benchmark]: TraceAbstraction took 3944.49 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.4 MB in the beginning and 116.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:23:33,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.50 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 159.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.65 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.85 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.13 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3944.49 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.4 MB in the beginning and 116.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 676 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 216 SDtfs, 131 SDslu, 232 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...