/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:10:00,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:10:00,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:10:00,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:10:00,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:10:00,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:10:00,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:10:00,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:10:00,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:10:00,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:10:00,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:10:00,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:10:00,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:10:00,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:10:00,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:10:00,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:10:00,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:10:00,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:10:00,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:10:00,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:10:00,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:10:00,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:10:00,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:10:00,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:10:00,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:10:00,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:10:00,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:10:00,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:10:00,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:10:00,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:10:00,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:10:00,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:10:00,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:10:00,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:10:00,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:10:00,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:10:00,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:10:00,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:10:00,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:10:00,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:10:00,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:10:00,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:10:00,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:10:00,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:10:00,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:10:00,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:10:00,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:10:00,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:10:00,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:10:00,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:10:00,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:10:00,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:10:00,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:10:00,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:10:00,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:10:00,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:10:00,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:10:00,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:10:00,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:10:00,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:10:00,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:10:00,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:10:00,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:10:00,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:10:00,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:10:00,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:10:00,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:10:00,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:10:00,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:10:00,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:10:00,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:10:00,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:10:00,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:10:00,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:10:00,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:10:00,891 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:10:00,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-21 23:10:00,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1698e17b/21065d13de6e45afbadca0035fb596e6/FLAGf3c427908 [2020-10-21 23:10:01,487 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:10:01,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-21 23:10:01,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1698e17b/21065d13de6e45afbadca0035fb596e6/FLAGf3c427908 [2020-10-21 23:10:01,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1698e17b/21065d13de6e45afbadca0035fb596e6 [2020-10-21 23:10:01,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:10:01,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:10:01,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:10:01,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:10:01,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:10:01,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:10:01" (1/1) ... [2020-10-21 23:10:01,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c420915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:01, skipping insertion in model container [2020-10-21 23:10:01,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:10:01" (1/1) ... [2020-10-21 23:10:01,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:10:01,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:10:02,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:10:02,388 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:10:02,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:10:02,508 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:10:02,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02 WrapperNode [2020-10-21 23:10:02,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:10:02,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:10:02,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:10:02,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:10:02,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:10:02,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:10:02,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:10:02,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:10:02,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... [2020-10-21 23:10:02,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:10:02,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:10:02,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:10:02,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:10:02,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:10:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-21 23:10:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-21 23:10:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:10:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:10:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:10:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:10:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:10:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:10:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:10:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:10:02,670 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:10:03,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:10:03,110 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-21 23:10:03,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:10:03 BoogieIcfgContainer [2020-10-21 23:10:03,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:10:03,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:10:03,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:10:03,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:10:03,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:10:01" (1/3) ... [2020-10-21 23:10:03,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e879c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:10:03, skipping insertion in model container [2020-10-21 23:10:03,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:10:02" (2/3) ... [2020-10-21 23:10:03,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e879c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:10:03, skipping insertion in model container [2020-10-21 23:10:03,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:10:03" (3/3) ... [2020-10-21 23:10:03,122 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-21 23:10:03,133 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:10:03,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:10:03,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:10:03,142 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:10:03,166 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,166 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,167 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,167 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,167 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,168 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,168 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,168 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,169 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,169 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,169 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,169 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,170 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,170 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,170 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,170 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,171 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,171 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,171 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,172 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,172 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,172 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,172 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,173 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,173 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,173 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,174 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,174 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,174 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,175 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,178 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,179 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,179 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,179 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,179 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,180 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,180 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,180 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,180 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,180 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,181 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,186 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:10:03,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 23:10:03,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:10:03,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:10:03,224 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:10:03,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:10:03,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:10:03,224 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:10:03,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:10:03,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:10:03,240 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:10:03,241 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 96 transitions, 197 flow [2020-10-21 23:10:03,244 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 96 transitions, 197 flow [2020-10-21 23:10:03,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 197 flow [2020-10-21 23:10:03,299 INFO L129 PetriNetUnfolder]: 7/95 cut-off events. [2020-10-21 23:10:03,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:10:03,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2020-10-21 23:10:03,311 INFO L116 LiptonReduction]: Number of co-enabled transitions 2448 [2020-10-21 23:10:05,055 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-21 23:10:05,207 INFO L131 LiptonReduction]: Checked pairs total: 3189 [2020-10-21 23:10:05,207 INFO L133 LiptonReduction]: Total number of compositions: 108 [2020-10-21 23:10:05,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 20 transitions, 45 flow [2020-10-21 23:10:05,226 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 56 states. [2020-10-21 23:10:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-21 23:10:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 23:10:05,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 23:10:05,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,243 INFO L82 PathProgramCache]: Analyzing trace with hash 12060795, now seen corresponding path program 1 times [2020-10-21 23:10:05,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615551212] [2020-10-21 23:10:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615551212] [2020-10-21 23:10:05,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:05,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:10:05,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314280576] [2020-10-21 23:10:05,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:05,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:05,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:05,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,455 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-21 23:10:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:05,486 INFO L93 Difference]: Finished difference Result 96 states and 195 transitions. [2020-10-21 23:10:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:05,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 23:10:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:05,502 INFO L225 Difference]: With dead ends: 96 [2020-10-21 23:10:05,502 INFO L226 Difference]: Without dead ends: 41 [2020-10-21 23:10:05,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-21 23:10:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-21 23:10:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-21 23:10:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-21 23:10:05,547 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-21 23:10:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:05,547 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-21 23:10:05,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-21 23:10:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 23:10:05,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 23:10:05,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:10:05,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 373841738, now seen corresponding path program 1 times [2020-10-21 23:10:05,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255903925] [2020-10-21 23:10:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:05,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255903925] [2020-10-21 23:10:05,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:05,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:10:05,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291892166] [2020-10-21 23:10:05,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:05,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,610 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-21 23:10:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:05,619 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-21 23:10:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:05,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 23:10:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:05,620 INFO L225 Difference]: With dead ends: 21 [2020-10-21 23:10:05,620 INFO L226 Difference]: Without dead ends: 21 [2020-10-21 23:10:05,621 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 [2020-10-21 23:10:05,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-21 23:10:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-21 23:10:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-21 23:10:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-21 23:10:05,626 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-21 23:10:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:05,626 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-21 23:10:05,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-21 23:10:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:10:05,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:05,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:10:05,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,628 INFO L82 PathProgramCache]: Analyzing trace with hash 268410658, now seen corresponding path program 1 times [2020-10-21 23:10:05,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577728258] [2020-10-21 23:10:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:05,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577728258] [2020-10-21 23:10:05,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:05,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637601433] [2020-10-21 23:10:05,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:10:05,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:10:05,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:10:05,712 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 4 states. [2020-10-21 23:10:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:05,730 INFO L93 Difference]: Finished difference Result 24 states and 41 transitions. [2020-10-21 23:10:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:10:05,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-21 23:10:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:05,732 INFO L225 Difference]: With dead ends: 24 [2020-10-21 23:10:05,732 INFO L226 Difference]: Without dead ends: 21 [2020-10-21 23:10:05,732 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 [2020-10-21 23:10:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-21 23:10:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-21 23:10:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-21 23:10:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-10-21 23:10:05,736 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 8 [2020-10-21 23:10:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:05,737 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-10-21 23:10:05,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:10:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-10-21 23:10:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:10:05,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:05,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:10:05,738 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash -269161076, now seen corresponding path program 1 times [2020-10-21 23:10:05,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595736805] [2020-10-21 23:10:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:05,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595736805] [2020-10-21 23:10:05,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:05,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:10:05,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101444759] [2020-10-21 23:10:05,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:05,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,800 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 3 states. [2020-10-21 23:10:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:05,811 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2020-10-21 23:10:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:05,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 23:10:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:05,813 INFO L225 Difference]: With dead ends: 26 [2020-10-21 23:10:05,813 INFO L226 Difference]: Without dead ends: 21 [2020-10-21 23:10:05,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-21 23:10:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-21 23:10:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-21 23:10:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-21 23:10:05,819 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 9 [2020-10-21 23:10:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:05,820 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-21 23:10:05,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-10-21 23:10:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:10:05,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:05,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:10:05,822 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash -766886899, now seen corresponding path program 1 times [2020-10-21 23:10:05,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492083930] [2020-10-21 23:10:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:05,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492083930] [2020-10-21 23:10:05,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:05,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:05,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925168754] [2020-10-21 23:10:05,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:05,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:05,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:05,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,896 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 3 states. [2020-10-21 23:10:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:05,906 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-10-21 23:10:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:05,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 23:10:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:05,909 INFO L225 Difference]: With dead ends: 21 [2020-10-21 23:10:05,909 INFO L226 Difference]: Without dead ends: 16 [2020-10-21 23:10:05,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-21 23:10:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-21 23:10:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-21 23:10:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-10-21 23:10:05,914 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2020-10-21 23:10:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:05,915 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-10-21 23:10:05,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-10-21 23:10:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:10:05,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:05,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:05,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:10:05,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:05,917 INFO L82 PathProgramCache]: Analyzing trace with hash -58457807, now seen corresponding path program 2 times [2020-10-21 23:10:05,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:05,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609961802] [2020-10-21 23:10:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:05,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:05,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:05,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:10:05,971 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:10:05,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:10:05,972 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:10:05,979 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [353] [353] L686-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1207809609| 0) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1207809609| 0) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In-1207809609 0)) (= ~stopped~0_Out-1207809609 1)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In-1207809609} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In-1207809609, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1207809609|, ~stopped~0=~stopped~0_Out-1207809609, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1207809609|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-10-21 23:10:06,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:10:06 BasicIcfg [2020-10-21 23:10:06,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:10:06,008 INFO L168 Benchmark]: Toolchain (without parser) took 4207.19 ms. Allocated memory was 147.8 MB in the beginning and 244.3 MB in the end (delta: 96.5 MB). Free memory was 101.4 MB in the beginning and 153.4 MB in the end (delta: -52.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,009 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.10 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 159.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.86 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,012 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 155.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,013 INFO L168 Benchmark]: RCFGBuilder took 528.13 ms. Allocated memory is still 203.9 MB. Free memory was 155.5 MB in the beginning and 127.7 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,014 INFO L168 Benchmark]: TraceAbstraction took 2891.98 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 127.7 MB in the beginning and 153.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:10:06,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.10 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 159.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.86 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.06 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 155.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 528.13 ms. Allocated memory is still 203.9 MB. Free memory was 155.5 MB in the beginning and 127.7 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2891.98 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 127.7 MB in the beginning and 153.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1482 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 93 PlacesBefore, 20 PlacesAfterwards, 96 TransitionsBefore, 20 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 3189 MoverChecksTotal - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L740] 0 pthread_t t; [L741] 0 pendingIo = 1 [L742] 0 stoppingFlag = 0 [L743] 0 stoppingEvent = 0 [L744] 0 stopped = 0 [L745] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L724] 0 int status; [L702] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 1 stoppingFlag = 1 [L717] 1 int pending; [L711] 1 pendingIo-- [L712] 1 int tmp = pendingIo; [L714] 1 return tmp; [L705] 0 pendingIo = pendingIo + 1 [L707] 0 return 0; [L718] 1 pending = dec() [L719] COND TRUE 1 pending == 0 [L720] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L725] 0 status = BCSP_IoIncrement() [L726] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 81 SDtfs, 31 SDslu, 38 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 incorrect! Received shutdown request...