/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:02:02,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:02:02,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:02:02,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:02:02,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:02:02,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:02:02,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:02:02,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:02:02,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:02:02,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:02:02,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:02:02,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:02:02,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:02:02,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:02:02,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:02:02,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:02:02,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:02:02,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:02:02,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:02:02,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:02:02,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:02:02,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:02:02,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:02:02,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:02:02,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:02:02,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:02:02,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:02:02,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:02:02,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:02:02,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:02:02,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:02:02,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:02:02,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:02:02,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:02:02,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:02:02,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:02:02,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:02:02,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:02:02,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:02:02,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:02:02,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:02:02,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:02:02,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:02:02,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:02:02,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:02:02,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:02:02,716 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:02:02,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:02:02,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:02:02,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:02:02,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:02:02,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:02:02,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:02:02,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:02:02,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:02:02,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:02:02,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:02:02,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:02:02,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:02:02,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:02:02,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:02:02,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:02:02,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:02:02,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:02:02,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:02:02,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:02:02,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:02:02,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:02:02,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:02:02,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:02:02,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:02:02,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:02:03,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:02:03,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:02:03,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:02:03,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:02:03,033 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:02:03,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-04-18 02:02:03,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e533c19f/50d55cb5137e4b259d7da2d2cfd07a48/FLAG98e323c87 [2020-04-18 02:02:03,581 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:02:03,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-04-18 02:02:03,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e533c19f/50d55cb5137e4b259d7da2d2cfd07a48/FLAG98e323c87 [2020-04-18 02:02:03,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e533c19f/50d55cb5137e4b259d7da2d2cfd07a48 [2020-04-18 02:02:03,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:02:03,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:02:03,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:02:03,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:02:03,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:02:03,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:02:03" (1/1) ... [2020-04-18 02:02:03,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c86ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:03, skipping insertion in model container [2020-04-18 02:02:03,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:02:03" (1/1) ... [2020-04-18 02:02:03,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:02:03,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:02:04,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:02:04,508 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:02:04,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:02:04,666 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:02:04,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04 WrapperNode [2020-04-18 02:02:04,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:02:04,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:02:04,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:02:04,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:02:04,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:02:04,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:02:04,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:02:04,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:02:04,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (1/1) ... [2020-04-18 02:02:04,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:02:04,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:02:04,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:02:04,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:02:04,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (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 [2020-04-18 02:02:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:02:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:02:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:02:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:02:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:02:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:02:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:02:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:02:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:02:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:02:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:02:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:02:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:02:04,814 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:02:05,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:02:05,211 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:02:05,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:02:05 BoogieIcfgContainer [2020-04-18 02:02:05,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:02:05,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:02:05,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:02:05,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:02:05,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:02:03" (1/3) ... [2020-04-18 02:02:05,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff00c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:02:05, skipping insertion in model container [2020-04-18 02:02:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:04" (2/3) ... [2020-04-18 02:02:05,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff00c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:02:05, skipping insertion in model container [2020-04-18 02:02:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:02:05" (3/3) ... [2020-04-18 02:02:05,223 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-04-18 02:02:05,230 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:02:05,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:02:05,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:02:05,237 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:02:05,268 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,268 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,268 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,269 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,270 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,270 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,270 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,270 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,271 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,271 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,271 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,272 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,272 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,273 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,273 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,273 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,273 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,274 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,280 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,280 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,280 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,281 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,287 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,288 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,288 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,288 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,290 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,291 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,291 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,291 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:05,317 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:02:05,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:02:05,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:02:05,337 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:02:05,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:02:05,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:02:05,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:02:05,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:02:05,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:02:05,352 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:05,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:05,397 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:02:05,397 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:02:05,402 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:02:05,405 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:05,424 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:02:05,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:02:05,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:02:05,427 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:02:05,428 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:02:06,933 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 02:02:06,933 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:02:06,937 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:02:06,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:02:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:02:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:02:06,974 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:06,975 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:06,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:06,981 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 02:02:06,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:06,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356079172] [2020-04-18 02:02:06,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356079172] [2020-04-18 02:02:07,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:02:07,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488533743] [2020-04-18 02:02:07,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:07,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:07,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:07,226 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:02:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,310 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-18 02:02:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:07,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:02:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,346 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:02:07,351 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:02:07,353 INFO L678 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 [2020-04-18 02:02:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:02:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:02:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:02:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-18 02:02:07,423 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-18 02:02:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,427 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-18 02:02:07,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-18 02:02:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:02:07,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-18 02:02:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923769209] [2020-04-18 02:02:07,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923769209] [2020-04-18 02:02:07,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:07,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008147390] [2020-04-18 02:02:07,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:07,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:07,523 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 3 states. [2020-04-18 02:02:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,545 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-18 02:02:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:07,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:02:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,548 INFO L225 Difference]: With dead ends: 250 [2020-04-18 02:02:07,548 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:02:07,549 INFO L678 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 [2020-04-18 02:02:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:02:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-18 02:02:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:02:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-18 02:02:07,568 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-18 02:02:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,569 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-18 02:02:07,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-18 02:02:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:02:07,570 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,571 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,571 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 02:02:07,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802640646] [2020-04-18 02:02:07,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802640646] [2020-04-18 02:02:07,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:07,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810891527] [2020-04-18 02:02:07,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:07,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:07,641 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 4 states. [2020-04-18 02:02:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,673 INFO L93 Difference]: Finished difference Result 234 states and 592 transitions. [2020-04-18 02:02:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:02:07,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:02:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,677 INFO L225 Difference]: With dead ends: 234 [2020-04-18 02:02:07,677 INFO L226 Difference]: Without dead ends: 138 [2020-04-18 02:02:07,678 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-18 02:02:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-18 02:02:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-18 02:02:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-04-18 02:02:07,698 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 10 [2020-04-18 02:02:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,698 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-04-18 02:02:07,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-04-18 02:02:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:02:07,700 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,700 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-18 02:02:07,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098011994] [2020-04-18 02:02:07,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098011994] [2020-04-18 02:02:07,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:02:07,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754056183] [2020-04-18 02:02:07,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:07,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:07,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:07,761 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-04-18 02:02:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,768 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-04-18 02:02:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:07,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:02:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,770 INFO L225 Difference]: With dead ends: 134 [2020-04-18 02:02:07,770 INFO L226 Difference]: Without dead ends: 134 [2020-04-18 02:02:07,771 INFO L678 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 [2020-04-18 02:02:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-18 02:02:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-18 02:02:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-18 02:02:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-04-18 02:02:07,780 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-04-18 02:02:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,780 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-04-18 02:02:07,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-04-18 02:02:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:07,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,782 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-04-18 02:02:07,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889981448] [2020-04-18 02:02:07,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889981448] [2020-04-18 02:02:07,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:07,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300764620] [2020-04-18 02:02:07,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:07,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:07,852 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-04-18 02:02:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,880 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-04-18 02:02:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:02:07,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,882 INFO L225 Difference]: With dead ends: 194 [2020-04-18 02:02:07,882 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 02:02:07,882 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 02:02:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 02:02:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 02:02:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 02:02:07,889 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-04-18 02:02:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,889 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 02:02:07,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 02:02:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:07,890 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,891 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,891 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 2 times [2020-04-18 02:02:07,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077955871] [2020-04-18 02:02:07,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:07,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077955871] [2020-04-18 02:02:07,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:07,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:02:07,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526234529] [2020-04-18 02:02:07,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:07,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:07,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:07,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:07,931 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-18 02:02:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:07,950 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-18 02:02:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:02:07,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:07,952 INFO L225 Difference]: With dead ends: 128 [2020-04-18 02:02:07,952 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 02:02:07,952 INFO L678 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 [2020-04-18 02:02:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 02:02:07,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 02:02:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:02:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 02:02:07,957 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-18 02:02:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:07,957 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 02:02:07,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 02:02:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:07,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:07,958 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:07,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 3 times [2020-04-18 02:02:07,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:07,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956016904] [2020-04-18 02:02:07,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:08,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956016904] [2020-04-18 02:02:08,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:08,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:08,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386892467] [2020-04-18 02:02:08,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:08,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:08,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:08,063 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-18 02:02:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:08,119 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-18 02:02:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:02:08,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:08,121 INFO L225 Difference]: With dead ends: 81 [2020-04-18 02:02:08,122 INFO L226 Difference]: Without dead ends: 59 [2020-04-18 02:02:08,122 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-18 02:02:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-18 02:02:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-18 02:02:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-18 02:02:08,129 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-18 02:02:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:08,130 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-18 02:02:08,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-18 02:02:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:02:08,131 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:08,131 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:08,131 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:08,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 02:02:08,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:08,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573292289] [2020-04-18 02:02:08,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:08,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573292289] [2020-04-18 02:02:08,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:08,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:02:08,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939898919] [2020-04-18 02:02:08,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:02:08,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:08,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:02:08,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:08,227 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-18 02:02:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:08,275 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-18 02:02:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:02:08,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:02:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:08,276 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:02:08,276 INFO L226 Difference]: Without dead ends: 45 [2020-04-18 02:02:08,277 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:02:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-18 02:02:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-18 02:02:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-18 02:02:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-18 02:02:08,279 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-18 02:02:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:08,280 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-18 02:02:08,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:02:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-18 02:02:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:02:08,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:08,281 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:08,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 02:02:08,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:08,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3368086] [2020-04-18 02:02:08,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:08,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3368086] [2020-04-18 02:02:08,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:08,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:02:08,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58881068] [2020-04-18 02:02:08,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:02:08,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:08,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:02:08,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:02:08,335 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-18 02:02:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:08,377 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-18 02:02:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:02:08,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:02:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:08,378 INFO L225 Difference]: With dead ends: 42 [2020-04-18 02:02:08,378 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:02:08,378 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:02:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:02:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:02:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:02:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:02:08,379 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 02:02:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:08,380 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:02:08,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:02:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:02:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:02:08,380 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:08,380 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:08,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:08,381 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 02:02:08,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:08,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931109588] [2020-04-18 02:02:08,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:02:08,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931109588] [2020-04-18 02:02:08,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:08,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:08,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343232979] [2020-04-18 02:02:08,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:08,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:08,409 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-04-18 02:02:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:08,413 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:02:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:08,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-18 02:02:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:08,414 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:02:08,414 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:02:08,414 INFO L678 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 [2020-04-18 02:02:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:02:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:02:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:02:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:02:08,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:02:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:08,415 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:02:08,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:02:08,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:02:08,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:02:08 BasicIcfg [2020-04-18 02:02:08,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:02:08,422 INFO L168 Benchmark]: Toolchain (without parser) took 4501.58 ms. Allocated memory was 140.0 MB in the beginning and 244.3 MB in the end (delta: 104.3 MB). Free memory was 101.9 MB in the beginning and 167.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,423 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:02:08,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.69 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 159.7 MB in the end (delta: -59.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,425 INFO L168 Benchmark]: Boogie Preprocessor took 27.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,426 INFO L168 Benchmark]: RCFGBuilder took 470.48 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 134.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,428 INFO L168 Benchmark]: TraceAbstraction took 3203.42 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 134.1 MB in the beginning and 167.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:08,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.69 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 159.7 MB in the end (delta: -59.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.48 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 134.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3203.42 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 134.1 MB in the beginning and 167.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 180 SDtfs, 124 SDslu, 182 SDs, 0 SdLazy, 128 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 4017 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...