/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-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:41:43,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:41:43,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:41:43,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:41:43,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:41:43,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:41:43,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:41:43,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:41:43,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:41:43,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:41:43,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:41:43,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:41:43,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:41:43,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:41:43,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:41:43,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:41:43,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:41:43,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:41:43,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:41:43,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:41:43,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:41:43,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:41:43,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:41:43,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:41:43,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:41:43,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:41:43,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:41:43,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:41:43,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:41:43,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:41:43,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:41:43,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:41:43,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:41:43,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:41:43,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:41:43,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:41:43,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:41:43,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:41:43,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:41:43,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:41:43,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:41:43,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:41:43,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:41:43,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:41:43,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:41:43,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:41:43,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:41:43,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:41:43,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:41:43,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:41:43,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:41:43,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:41:43,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:41:43,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:41:43,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:41:43,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:41:43,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:41:43,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:41:43,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:41:43,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:41:43,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:41:43,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:41:43,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:41:43,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:41:43,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:41:43,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:41:43,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:41:43,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:41:43,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:41:43,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:41:43,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:41:43,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:41:43,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:41:43,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:41:43,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:41:43,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:41:43,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 11:41:43,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b79c1bc/116c50fc6bb64943a96ee9dc21b70f48/FLAG6ce778e6c [2020-10-16 11:41:44,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:41:44,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 11:41:44,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b79c1bc/116c50fc6bb64943a96ee9dc21b70f48/FLAG6ce778e6c [2020-10-16 11:41:44,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b79c1bc/116c50fc6bb64943a96ee9dc21b70f48 [2020-10-16 11:41:44,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:41:44,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:41:44,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:41:44,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:41:44,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:41:44,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:41:44" (1/1) ... [2020-10-16 11:41:44,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cae9286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:44, skipping insertion in model container [2020-10-16 11:41:44,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:41:44" (1/1) ... [2020-10-16 11:41:44,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:41:44,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:41:45,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:41:45,454 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:41:45,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:41:45,568 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:41:45,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45 WrapperNode [2020-10-16 11:41:45,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:41:45,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:41:45,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:41:45,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:41:45,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:41:45,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:41:45,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:41:45,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:41:45,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:41:45,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:41:45,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:41:45,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:41:45,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (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 11:41:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:41:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 11:41:45,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 11:41:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:41:45,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:41:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:41:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:41:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:41:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:41:45,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:41:45,710 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 11:41:46,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:41:46,048 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 11:41:46,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:41:46 BoogieIcfgContainer [2020-10-16 11:41:46,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:41:46,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:41:46,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:41:46,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:41:46,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:41:44" (1/3) ... [2020-10-16 11:41:46,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42704d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:41:46, skipping insertion in model container [2020-10-16 11:41:46,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (2/3) ... [2020-10-16 11:41:46,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42704d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:41:46, skipping insertion in model container [2020-10-16 11:41:46,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:41:46" (3/3) ... [2020-10-16 11:41:46,061 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-16 11:41:46,075 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:41:46,075 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:41:46,084 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:41:46,085 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:41:46,115 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,115 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,116 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,117 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,118 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,133 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,134 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:46,143 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 11:41:46,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:41:46,179 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:41:46,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:41:46,179 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:41:46,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:41:46,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:41:46,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:41:46,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:41:46,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:41:46,196 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:41:46,197 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 11:41:46,199 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 11:41:46,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 11:41:46,261 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-16 11:41:46,261 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 11:41:46,269 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-16 11:41:46,274 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-16 11:41:47,096 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-16 11:41:47,185 INFO L132 LiptonReduction]: Checked pairs total: 14017 [2020-10-16 11:41:47,186 INFO L134 LiptonReduction]: Total number of compositions: 46 [2020-10-16 11:41:47,192 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 65 transitions, 152 flow [2020-10-16 11:41:47,241 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 797 states. [2020-10-16 11:41:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2020-10-16 11:41:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 11:41:47,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:47,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 11:41:47,252 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 1 times [2020-10-16 11:41:47,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:47,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136217932] [2020-10-16 11:41:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:47,438 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 11:41:47,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136217932] [2020-10-16 11:41:47,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:47,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:41:47,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8582495] [2020-10-16 11:41:47,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:41:47,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:47,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:41:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:41:47,472 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 2 states. [2020-10-16 11:41:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:47,528 INFO L93 Difference]: Finished difference Result 797 states and 2314 transitions. [2020-10-16 11:41:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:41:47,530 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 11:41:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:47,560 INFO L225 Difference]: With dead ends: 797 [2020-10-16 11:41:47,560 INFO L226 Difference]: Without dead ends: 758 [2020-10-16 11:41:47,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:41:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-16 11:41:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2020-10-16 11:41:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-16 11:41:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2229 transitions. [2020-10-16 11:41:47,689 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2229 transitions. Word has length 4 [2020-10-16 11:41:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:47,689 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 2229 transitions. [2020-10-16 11:41:47,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:41:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2229 transitions. [2020-10-16 11:41:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:41:47,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:47,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:47,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:41:47,693 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:47,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:47,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 1 times [2020-10-16 11:41:47,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:47,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726932769] [2020-10-16 11:41:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:47,757 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 11:41:47,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726932769] [2020-10-16 11:41:47,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:47,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:41:47,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089730759] [2020-10-16 11:41:47,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:47,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:47,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:47,761 INFO L87 Difference]: Start difference. First operand 758 states and 2229 transitions. Second operand 3 states. [2020-10-16 11:41:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:47,823 INFO L93 Difference]: Finished difference Result 761 states and 2195 transitions. [2020-10-16 11:41:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:47,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:41:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:47,829 INFO L225 Difference]: With dead ends: 761 [2020-10-16 11:41:47,830 INFO L226 Difference]: Without dead ends: 635 [2020-10-16 11:41:47,831 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 [2020-10-16 11:41:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-16 11:41:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 617. [2020-10-16 11:41:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-16 11:41:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1829 transitions. [2020-10-16 11:41:47,861 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1829 transitions. Word has length 10 [2020-10-16 11:41:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:47,861 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 1829 transitions. [2020-10-16 11:41:47,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1829 transitions. [2020-10-16 11:41:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:41:47,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:47,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:47,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:41:47,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 1 times [2020-10-16 11:41:47,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:47,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615344341] [2020-10-16 11:41:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:47,916 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 11:41:47,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615344341] [2020-10-16 11:41:47,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:47,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:41:47,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653268772] [2020-10-16 11:41:47,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:47,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:47,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:47,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:47,919 INFO L87 Difference]: Start difference. First operand 617 states and 1829 transitions. Second operand 3 states. [2020-10-16 11:41:47,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:47,943 INFO L93 Difference]: Finished difference Result 596 states and 1750 transitions. [2020-10-16 11:41:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:47,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 11:41:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:47,948 INFO L225 Difference]: With dead ends: 596 [2020-10-16 11:41:47,948 INFO L226 Difference]: Without dead ends: 464 [2020-10-16 11:41:47,949 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 [2020-10-16 11:41:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-16 11:41:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-16 11:41:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-16 11:41:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1401 transitions. [2020-10-16 11:41:47,966 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1401 transitions. Word has length 12 [2020-10-16 11:41:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:47,967 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1401 transitions. [2020-10-16 11:41:47,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:47,968 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1401 transitions. [2020-10-16 11:41:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:41:47,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:47,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:47,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:41:47,972 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:47,973 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 1 times [2020-10-16 11:41:47,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:47,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523932554] [2020-10-16 11:41:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,020 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 11:41:48,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523932554] [2020-10-16 11:41:48,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492548769] [2020-10-16 11:41:48,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,023 INFO L87 Difference]: Start difference. First operand 464 states and 1401 transitions. Second operand 3 states. [2020-10-16 11:41:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,053 INFO L93 Difference]: Finished difference Result 848 states and 2563 transitions. [2020-10-16 11:41:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 11:41:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,061 INFO L225 Difference]: With dead ends: 848 [2020-10-16 11:41:48,061 INFO L226 Difference]: Without dead ends: 848 [2020-10-16 11:41:48,062 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 [2020-10-16 11:41:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-16 11:41:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 542. [2020-10-16 11:41:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-16 11:41:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1652 transitions. [2020-10-16 11:41:48,086 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1652 transitions. Word has length 19 [2020-10-16 11:41:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,086 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 1652 transitions. [2020-10-16 11:41:48,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1652 transitions. [2020-10-16 11:41:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:41:48,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:48,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:48,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:41:48,089 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:48,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:48,090 INFO L82 PathProgramCache]: Analyzing trace with hash 417736639, now seen corresponding path program 1 times [2020-10-16 11:41:48,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:48,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225822779] [2020-10-16 11:41:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,140 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 11:41:48,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225822779] [2020-10-16 11:41:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144988592] [2020-10-16 11:41:48,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,143 INFO L87 Difference]: Start difference. First operand 542 states and 1652 transitions. Second operand 3 states. [2020-10-16 11:41:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,191 INFO L93 Difference]: Finished difference Result 726 states and 2129 transitions. [2020-10-16 11:41:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 11:41:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,196 INFO L225 Difference]: With dead ends: 726 [2020-10-16 11:41:48,196 INFO L226 Difference]: Without dead ends: 576 [2020-10-16 11:41:48,196 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 [2020-10-16 11:41:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-16 11:41:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 530. [2020-10-16 11:41:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-16 11:41:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1543 transitions. [2020-10-16 11:41:48,215 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1543 transitions. Word has length 19 [2020-10-16 11:41:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,215 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 1543 transitions. [2020-10-16 11:41:48,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1543 transitions. [2020-10-16 11:41:48,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:41:48,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:48,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:48,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:41:48,218 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash -691043045, now seen corresponding path program 2 times [2020-10-16 11:41:48,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:48,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924673780] [2020-10-16 11:41:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,254 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 11:41:48,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924673780] [2020-10-16 11:41:48,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001622392] [2020-10-16 11:41:48,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,256 INFO L87 Difference]: Start difference. First operand 530 states and 1543 transitions. Second operand 3 states. [2020-10-16 11:41:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,275 INFO L93 Difference]: Finished difference Result 748 states and 2068 transitions. [2020-10-16 11:41:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 11:41:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,281 INFO L225 Difference]: With dead ends: 748 [2020-10-16 11:41:48,281 INFO L226 Difference]: Without dead ends: 742 [2020-10-16 11:41:48,281 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 [2020-10-16 11:41:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-16 11:41:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 556. [2020-10-16 11:41:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-16 11:41:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1586 transitions. [2020-10-16 11:41:48,301 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1586 transitions. Word has length 19 [2020-10-16 11:41:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,302 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 1586 transitions. [2020-10-16 11:41:48,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1586 transitions. [2020-10-16 11:41:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:41:48,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:48,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:48,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:41:48,304 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:48,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash 962803841, now seen corresponding path program 2 times [2020-10-16 11:41:48,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:48,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461939866] [2020-10-16 11:41:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,328 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 11:41:48,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461939866] [2020-10-16 11:41:48,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830545008] [2020-10-16 11:41:48,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,330 INFO L87 Difference]: Start difference. First operand 556 states and 1586 transitions. Second operand 3 states. [2020-10-16 11:41:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,366 INFO L93 Difference]: Finished difference Result 498 states and 1291 transitions. [2020-10-16 11:41:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 11:41:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,369 INFO L225 Difference]: With dead ends: 498 [2020-10-16 11:41:48,369 INFO L226 Difference]: Without dead ends: 316 [2020-10-16 11:41:48,370 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 [2020-10-16 11:41:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-16 11:41:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 274. [2020-10-16 11:41:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-16 11:41:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 645 transitions. [2020-10-16 11:41:48,378 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 645 transitions. Word has length 19 [2020-10-16 11:41:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,379 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 645 transitions. [2020-10-16 11:41:48,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 645 transitions. [2020-10-16 11:41:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:41:48,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:48,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:48,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:41:48,381 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 1 times [2020-10-16 11:41:48,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:48,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599076869] [2020-10-16 11:41:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,406 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 11:41:48,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599076869] [2020-10-16 11:41:48,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133100341] [2020-10-16 11:41:48,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,409 INFO L87 Difference]: Start difference. First operand 274 states and 645 transitions. Second operand 3 states. [2020-10-16 11:41:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,420 INFO L93 Difference]: Finished difference Result 274 states and 637 transitions. [2020-10-16 11:41:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-16 11:41:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,422 INFO L225 Difference]: With dead ends: 274 [2020-10-16 11:41:48,423 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 11:41:48,423 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 [2020-10-16 11:41:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 11:41:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-10-16 11:41:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-16 11:41:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 575 transitions. [2020-10-16 11:41:48,430 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 575 transitions. Word has length 22 [2020-10-16 11:41:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,431 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 575 transitions. [2020-10-16 11:41:48,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 575 transitions. [2020-10-16 11:41:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:41:48,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:41:48,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:41:48,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:41:48,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:41:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:41:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1640844081, now seen corresponding path program 1 times [2020-10-16 11:41:48,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:41:48,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034128861] [2020-10-16 11:41:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:41:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:41:48,460 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 11:41:48,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034128861] [2020-10-16 11:41:48,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:41:48,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:41:48,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770192517] [2020-10-16 11:41:48,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:41:48,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:41:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:41:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:41:48,462 INFO L87 Difference]: Start difference. First operand 246 states and 575 transitions. Second operand 3 states. [2020-10-16 11:41:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:41:48,469 INFO L93 Difference]: Finished difference Result 158 states and 401 transitions. [2020-10-16 11:41:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:41:48,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-16 11:41:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:41:48,470 INFO L225 Difference]: With dead ends: 158 [2020-10-16 11:41:48,471 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:41:48,471 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 [2020-10-16 11:41:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:41:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:41:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:41:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:41:48,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-16 11:41:48,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:41:48,472 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:41:48,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:41:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:41:48,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:41:48,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:41:48,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:41:48 BasicIcfg [2020-10-16 11:41:48,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:41:48,479 INFO L168 Benchmark]: Toolchain (without parser) took 3643.90 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 101.8 MB in the beginning and 94.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,480 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:41:48,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.01 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 101.5 MB in the beginning and 160.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.19 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,482 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,483 INFO L168 Benchmark]: RCFGBuilder took 403.74 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 131.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,484 INFO L168 Benchmark]: TraceAbstraction took 2425.00 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 131.8 MB in the beginning and 94.0 MB in the end (delta: 37.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:41:48,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.01 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 101.5 MB in the beginning and 160.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.19 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 403.74 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 131.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2425.00 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 131.8 MB in the beginning and 94.0 MB in the end (delta: 37.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1275 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 516 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 84 PlacesBefore, 54 PlacesAfterwards, 103 TransitionsBefore, 65 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 46 TotalNumberOfCompositions, 14017 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 573 SDtfs, 230 SDslu, 283 SDs, 0 SdLazy, 89 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 598 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...