/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/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:11:40,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:11:40,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:11:40,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:11:40,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:11:40,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:11:40,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:11:40,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:11:40,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:11:40,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:11:40,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:11:40,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:11:40,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:11:40,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:11:40,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:11:40,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:11:40,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:11:40,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:11:40,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:11:40,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:11:40,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:11:40,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:11:40,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:11:40,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:11:40,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:11:40,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:11:40,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:11:40,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:11:40,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:11:40,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:11:40,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:11:40,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:11:40,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:11:40,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:11:40,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:11:40,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:11:40,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:11:40,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:11:40,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:11:40,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:11:40,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:11:40,696 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 02:11:40,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:11:40,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:11:40,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:11:40,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:11:40,714 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:11:40,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:11:40,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:11:40,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:11:40,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:11:40,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:11:40,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:11:40,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:11:40,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:11:40,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:11:40,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:11:40,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:11:40,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:11:40,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:11:40,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:11:40,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:11:40,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:11:40,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:11:40,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:11:40,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:11:40,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:11:40,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:11:40,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:11:40,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:11:40,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:11:40,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:11:40,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:11:41,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:11:41,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:11:41,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:11:41,010 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:11:41,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-18 02:11:41,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c88efed/d1584d19f3b44ee6b6ceb364e85041b1/FLAG907124842 [2020-04-18 02:11:41,579 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:11:41,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-18 02:11:41,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c88efed/d1584d19f3b44ee6b6ceb364e85041b1/FLAG907124842 [2020-04-18 02:11:41,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c88efed/d1584d19f3b44ee6b6ceb364e85041b1 [2020-04-18 02:11:41,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:11:41,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:11:41,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:11:41,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:11:41,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:11:41,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:11:41" (1/1) ... [2020-04-18 02:11:41,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:41, skipping insertion in model container [2020-04-18 02:11:41,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:11:41" (1/1) ... [2020-04-18 02:11:41,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:11:42,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:11:42,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:11:42,510 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:11:42,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:11:42,655 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:11:42,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42 WrapperNode [2020-04-18 02:11:42,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:11:42,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:11:42,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:11:42,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:11:42,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:11:42,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:11:42,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:11:42,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:11:42,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (1/1) ... [2020-04-18 02:11:42,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:11:42,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:11:42,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:11:42,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:11:42,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (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 02:11:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:11:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:11:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:11:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:11:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:11:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:11:42,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:11:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:11:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:11:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:11:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:11:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:11:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:11:42,814 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 02:11:43,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:11:43,240 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:11:43,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:11:43 BoogieIcfgContainer [2020-04-18 02:11:43,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:11:43,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:11:43,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:11:43,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:11:43,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:11:41" (1/3) ... [2020-04-18 02:11:43,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:11:43, skipping insertion in model container [2020-04-18 02:11:43,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:42" (2/3) ... [2020-04-18 02:11:43,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:11:43, skipping insertion in model container [2020-04-18 02:11:43,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:11:43" (3/3) ... [2020-04-18 02:11:43,255 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2020-04-18 02:11:43,264 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:11:43,264 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:11:43,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:11:43,272 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:11:43,297 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,297 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,298 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,298 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,299 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,299 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,299 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,300 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,300 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,300 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,301 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,301 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,301 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,302 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,302 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,302 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,303 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,303 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,307 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,307 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,308 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,308 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,316 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,316 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,317 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,330 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,331 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,331 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,331 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:43,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:11:43,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:11:43,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:11:43,374 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:11:43,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:11:43,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:11:43,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:11:43,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:11:43,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:11:43,403 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:43,405 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:43,478 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:11:43,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:11:43,483 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:11:43,486 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:43,505 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:11:43,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:11:43,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:11:43,510 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:11:43,511 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:11:44,754 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 02:11:44,870 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 02:11:44,870 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:11:44,874 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:11:44,914 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:11:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:11:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:11:44,927 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:44,928 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:44,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:44,933 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 02:11:44,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:44,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031802496] [2020-04-18 02:11:44,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:45,110 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 02:11:45,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031802496] [2020-04-18 02:11:45,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:45,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:45,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483058072] [2020-04-18 02:11:45,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:11:45,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:45,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:11:45,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:11:45,132 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:11:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:45,163 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:11:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:11:45,165 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:11:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:45,181 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:11:45,182 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:11:45,183 INFO L678 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 [2020-04-18 02:11:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:11:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:11:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:11:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:11:45,261 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:11:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:45,262 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:11:45,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:11:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:11:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:11:45,264 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:45,264 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:45,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 02:11:45,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:45,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812776404] [2020-04-18 02:11:45,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:45,435 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 02:11:45,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812776404] [2020-04-18 02:11:45,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:45,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:45,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902710728] [2020-04-18 02:11:45,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:11:45,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:11:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:11:45,439 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:11:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:45,479 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:11:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:11:45,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:11:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:45,483 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:11:45,483 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:11:45,484 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 02:11:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:11:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:11:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:11:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:11:45,508 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:11:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:45,508 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:11:45,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:11:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:11:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:11:45,510 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:45,510 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:45,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:45,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:45,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-18 02:11:45,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:45,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861358122] [2020-04-18 02:11:45,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:45,647 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 02:11:45,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861358122] [2020-04-18 02:11:45,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:45,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:45,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505108220] [2020-04-18 02:11:45,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:11:45,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:45,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:11:45,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:11:45,650 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 02:11:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:45,686 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-18 02:11:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:11:45,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:11:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:45,689 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:11:45,690 INFO L226 Difference]: Without dead ends: 242 [2020-04-18 02:11:45,690 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 02:11:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-18 02:11:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-18 02:11:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 02:11:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-18 02:11:45,707 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-18 02:11:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:45,708 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-18 02:11:45,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:11:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-18 02:11:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:11:45,710 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:45,710 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:45,710 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:45,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-18 02:11:45,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:45,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819074017] [2020-04-18 02:11:45,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:45,793 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 02:11:45,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819074017] [2020-04-18 02:11:45,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:45,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:45,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695063200] [2020-04-18 02:11:45,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:45,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:45,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:45,795 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-18 02:11:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:45,847 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-04-18 02:11:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:45,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:11:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:45,849 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:11:45,849 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:11:45,849 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:11:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:11:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:11:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:11:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 02:11:45,857 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-04-18 02:11:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:45,857 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 02:11:45,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 02:11:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:11:45,859 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:45,859 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:45,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:45,860 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 02:11:45,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:45,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834925453] [2020-04-18 02:11:45,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:45,926 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 02:11:45,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834925453] [2020-04-18 02:11:45,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:45,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:45,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240170176] [2020-04-18 02:11:45,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:45,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:45,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:45,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:45,928 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-04-18 02:11:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:45,973 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-04-18 02:11:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:45,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:11:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:45,974 INFO L225 Difference]: With dead ends: 176 [2020-04-18 02:11:45,974 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:11:45,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:11:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:11:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:11:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:11:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 02:11:45,979 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-04-18 02:11:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:45,979 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 02:11:45,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 02:11:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:11:45,980 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:45,980 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:45,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 02:11:45,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:45,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20686155] [2020-04-18 02:11:45,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:46,065 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 02:11:46,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20686155] [2020-04-18 02:11:46,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:46,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:46,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030414052] [2020-04-18 02:11:46,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:46,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:46,070 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 5 states. [2020-04-18 02:11:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:46,126 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-18 02:11:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:46,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:11:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:46,128 INFO L225 Difference]: With dead ends: 68 [2020-04-18 02:11:46,128 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:11:46,128 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:11:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:11:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:11:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:11:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:11:46,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:11:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:46,129 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:11:46,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:11:46,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:11:46,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:11:46 BasicIcfg [2020-04-18 02:11:46,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:11:46,135 INFO L168 Benchmark]: Toolchain (without parser) took 4207.29 ms. Allocated memory was 145.2 MB in the beginning and 245.9 MB in the end (delta: 100.7 MB). Free memory was 100.2 MB in the beginning and 118.1 MB in the end (delta: -17.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,136 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 158.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,139 INFO L168 Benchmark]: Boogie Preprocessor took 31.08 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,139 INFO L168 Benchmark]: RCFGBuilder took 506.16 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 132.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,140 INFO L168 Benchmark]: TraceAbstraction took 2887.82 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 132.7 MB in the beginning and 118.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:46,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 158.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.08 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.16 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 132.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2887.82 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 132.7 MB in the beginning and 118.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 668 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 167 SDs, 0 SdLazy, 40 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...