/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/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:19:56,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:19:56,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:19:56,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:19:56,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:19:56,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:19:56,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:19:56,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:19:56,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:19:56,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:19:56,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:19:56,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:19:56,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:19:56,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:19:56,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:19:56,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:19:56,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:19:56,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:19:56,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:19:56,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:19:56,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:19:56,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:19:56,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:19:56,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:19:56,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:19:56,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:19:56,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:19:56,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:19:56,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:19:56,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:19:56,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:19:56,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:19:56,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:19:56,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:19:56,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:19:56,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:19:56,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:19:56,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:19:56,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:19:56,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:19:56,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:19:56,455 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 [2020-10-16 11:19:56,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:19:56,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:19:56,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:19:56,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:19:56,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:19:56,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:19:56,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:19:56,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:19:56,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:19:56,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:19:56,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:19:56,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:19:56,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:19:56,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:19:56,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:19:56,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:19:56,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:19:56,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:19:56,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:19:56,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:19:56,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:19:56,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:19:56,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:19:56,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:19:56,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:19:56,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:19:56,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:19:56,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:19:56,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:19:56,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:19:56,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-16 11:19:56,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fbbe4da9/e19e00c3196b4f65911bc5b9bfc6bbc2/FLAG5398d58c3 [2020-10-16 11:19:57,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:19:57,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-16 11:19:57,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fbbe4da9/e19e00c3196b4f65911bc5b9bfc6bbc2/FLAG5398d58c3 [2020-10-16 11:19:57,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fbbe4da9/e19e00c3196b4f65911bc5b9bfc6bbc2 [2020-10-16 11:19:57,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:19:57,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:19:57,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:57,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:19:57,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:19:57,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:57,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a6f078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57, skipping insertion in model container [2020-10-16 11:19:57,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:57,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:19:57,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:19:58,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:58,178 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:19:58,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:58,442 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:19:58,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58 WrapperNode [2020-10-16 11:19:58,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:58,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:58,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:19:58,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:19:58,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:58,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:19:58,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:19:58,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:19:58,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (1/1) ... [2020-10-16 11:19:58,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:19:58,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:19:58,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:19:58,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:19:58,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (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 [2020-10-16 11:19:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:19:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:19:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:19:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:19:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:19:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:19:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:19:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:19:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:19:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:19:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:19:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:19:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:19:58,618 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:19:58,942 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:19:58,942 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:19:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:58 BoogieIcfgContainer [2020-10-16 11:19:58,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:19:58,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:19:58,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:19:58,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:19:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:19:57" (1/3) ... [2020-10-16 11:19:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:58, skipping insertion in model container [2020-10-16 11:19:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:58" (2/3) ... [2020-10-16 11:19:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:58, skipping insertion in model container [2020-10-16 11:19:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:58" (3/3) ... [2020-10-16 11:19:58,954 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-16 11:19:58,968 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:19:58,968 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:19:58,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:19:58,977 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:19:59,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,014 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,014 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,025 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,025 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,040 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,041 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,041 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,041 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:59,051 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:19:59,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:19:59,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:19:59,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:19:59,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:19:59,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:19:59,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:19:59,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:19:59,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:19:59,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:19:59,101 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:19:59,104 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:59,108 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:59,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:59,160 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 11:19:59,161 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:19:59,166 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 11:19:59,169 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 11:20:00,749 INFO L132 LiptonReduction]: Checked pairs total: 2102 [2020-10-16 11:20:00,750 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:20:00,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 11:20:00,780 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-16 11:20:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-16 11:20:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:20:00,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:00,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:00,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:00,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-10-16 11:20:00,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:00,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426017991] [2020-10-16 11:20:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426017991] [2020-10-16 11:20:01,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:01,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643377179] [2020-10-16 11:20:01,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:01,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:01,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:01,084 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-16 11:20:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,132 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-10-16 11:20:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:01,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:20:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,150 INFO L225 Difference]: With dead ends: 214 [2020-10-16 11:20:01,150 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 11:20:01,151 INFO L677 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 [2020-10-16 11:20:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 11:20:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-16 11:20:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 11:20:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-10-16 11:20:01,213 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-10-16 11:20:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,214 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-10-16 11:20:01,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-10-16 11:20:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:01,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:01,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-10-16 11:20:01,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288324806] [2020-10-16 11:20:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288324806] [2020-10-16 11:20:01,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410481154] [2020-10-16 11:20:01,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,288 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-10-16 11:20:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,319 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-10-16 11:20:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:01,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:20:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,322 INFO L225 Difference]: With dead ends: 202 [2020-10-16 11:20:01,322 INFO L226 Difference]: Without dead ends: 130 [2020-10-16 11:20:01,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-16 11:20:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-16 11:20:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 11:20:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-10-16 11:20:01,339 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-10-16 11:20:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,340 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-10-16 11:20:01,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-10-16 11:20:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:20:01,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:01,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,342 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-10-16 11:20:01,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823761893] [2020-10-16 11:20:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823761893] [2020-10-16 11:20:01,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:01,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660387120] [2020-10-16 11:20:01,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:01,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:01,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:01,391 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 3 states. [2020-10-16 11:20:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,402 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-10-16 11:20:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:01,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:20:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,407 INFO L225 Difference]: With dead ends: 124 [2020-10-16 11:20:01,407 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 11:20:01,410 INFO L677 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 [2020-10-16 11:20:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 11:20:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-16 11:20:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 11:20:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-16 11:20:01,431 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-10-16 11:20:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,432 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-16 11:20:01,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-16 11:20:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:20:01,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:01,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-10-16 11:20:01,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717535225] [2020-10-16 11:20:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717535225] [2020-10-16 11:20:01,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656419877] [2020-10-16 11:20:01,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,514 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 4 states. [2020-10-16 11:20:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,534 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-10-16 11:20:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:01,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:20:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,536 INFO L225 Difference]: With dead ends: 142 [2020-10-16 11:20:01,536 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 11:20:01,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 11:20:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-16 11:20:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 11:20:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-10-16 11:20:01,542 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-10-16 11:20:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,543 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-10-16 11:20:01,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-10-16 11:20:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:01,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-10-16 11:20:01,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405646647] [2020-10-16 11:20:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405646647] [2020-10-16 11:20:01,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102816139] [2020-10-16 11:20:01,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,634 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 4 states. [2020-10-16 11:20:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,675 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-10-16 11:20:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:01,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:20:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,676 INFO L225 Difference]: With dead ends: 77 [2020-10-16 11:20:01,677 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 11:20:01,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 11:20:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-16 11:20:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 11:20:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-10-16 11:20:01,687 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-10-16 11:20:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,687 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-10-16 11:20:01,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-10-16 11:20:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:01,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:01,689 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-10-16 11:20:01,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953398828] [2020-10-16 11:20:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953398828] [2020-10-16 11:20:01,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:01,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613581251] [2020-10-16 11:20:01,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:01,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:01,785 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 5 states. [2020-10-16 11:20:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,827 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-10-16 11:20:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:01,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:20:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,828 INFO L225 Difference]: With dead ends: 57 [2020-10-16 11:20:01,828 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 11:20:01,829 INFO L677 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 [2020-10-16 11:20:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 11:20:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 11:20:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 11:20:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-10-16 11:20:01,832 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-10-16 11:20:01,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,832 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-10-16 11:20:01,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-10-16 11:20:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:01,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:01,834 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-10-16 11:20:01,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945353111] [2020-10-16 11:20:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945353111] [2020-10-16 11:20:01,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:01,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885425565] [2020-10-16 11:20:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:01,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:01,891 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-10-16 11:20:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,942 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-10-16 11:20:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:01,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 11:20:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,943 INFO L225 Difference]: With dead ends: 39 [2020-10-16 11:20:01,943 INFO L226 Difference]: Without dead ends: 33 [2020-10-16 11:20:01,944 INFO L677 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 [2020-10-16 11:20:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-16 11:20:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-16 11:20:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-16 11:20:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-16 11:20:01,947 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-16 11:20:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,947 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-16 11:20:01,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-16 11:20:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:20:01,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:01,949 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,949 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-10-16 11:20:01,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901377067] [2020-10-16 11:20:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901377067] [2020-10-16 11:20:01,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:01,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430790777] [2020-10-16 11:20:01,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,988 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-16 11:20:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:02,001 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-16 11:20:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:02,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-16 11:20:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:02,002 INFO L225 Difference]: With dead ends: 32 [2020-10-16 11:20:02,002 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:02,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:02,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-16 11:20:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:02,004 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:02,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:02,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:02,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:02,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:02 BasicIcfg [2020-10-16 11:20:02,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:02,012 INFO L168 Benchmark]: Toolchain (without parser) took 4325.51 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 101.6 MB in the beginning and 176.4 MB in the end (delta: -74.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,013 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.97 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 162.2 MB in the end (delta: -61.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.24 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,016 INFO L168 Benchmark]: Boogie Preprocessor took 28.43 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,016 INFO L168 Benchmark]: RCFGBuilder took 400.62 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 136.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,017 INFO L168 Benchmark]: TraceAbstraction took 3062.83 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 136.3 MB in the beginning and 176.4 MB in the end (delta: -40.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:02,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.97 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 162.2 MB in the end (delta: -61.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.24 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.43 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.62 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 136.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3062.83 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 136.3 MB in the beginning and 176.4 MB in the end (delta: -40.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 747 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 77 PlacesBefore, 30 PlacesAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2102 MoverChecksTotal - 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 125 SDtfs, 114 SDslu, 139 SDs, 0 SdLazy, 101 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...