/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:21:34,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:21:34,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:21:35,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:21:35,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:21:35,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:21:35,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:21:35,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:21:35,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:21:35,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:21:35,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:21:35,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:21:35,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:21:35,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:21:35,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:21:35,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:21:35,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:21:35,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:21:35,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:21:35,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:21:35,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:21:35,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:21:35,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:21:35,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:21:35,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:21:35,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:21:35,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:21:35,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:21:35,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:21:35,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:21:35,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:21:35,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:21:35,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:21:35,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:21:35,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:21:35,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:21:35,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:21:35,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:21:35,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:21:35,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:21:35,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:21:35,050 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-SemanticLbe.epf [2020-04-17 22:21:35,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:21:35,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:21:35,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:21:35,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:21:35,070 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:21:35,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:21:35,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:21:35,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:21:35,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:21:35,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:21:35,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:21:35,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:21:35,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:21:35,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:21:35,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:21:35,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:21:35,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:21:35,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:21:35,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:21:35,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:21:35,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:21:35,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:21:35,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:21:35,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:21:35,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:21:35,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:21:35,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:21:35,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:21:35,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:21:35,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:21:35,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:21:35,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:21:35,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:21:35,419 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:21:35,419 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-17 22:21:35,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93af33b7/21caac2fa908484cbe191f3f0b2fbc5f/FLAG28a037d1f [2020-04-17 22:21:36,066 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:21:36,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-17 22:21:36,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93af33b7/21caac2fa908484cbe191f3f0b2fbc5f/FLAG28a037d1f [2020-04-17 22:21:36,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93af33b7/21caac2fa908484cbe191f3f0b2fbc5f [2020-04-17 22:21:36,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:21:36,378 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:21:36,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:36,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:21:36,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:21:36,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:36" (1/1) ... [2020-04-17 22:21:36,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fceb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:36, skipping insertion in model container [2020-04-17 22:21:36,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:36" (1/1) ... [2020-04-17 22:21:36,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:21:36,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:21:37,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:37,028 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:21:37,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:37,192 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:21:37,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37 WrapperNode [2020-04-17 22:21:37,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:37,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:37,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:21:37,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:21:37,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:37,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:21:37,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:21:37,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:21:37,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (1/1) ... [2020-04-17 22:21:37,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:21:37,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:21:37,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:21:37,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:21:37,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (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 [2020-04-17 22:21:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:21:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:21:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:21:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:21:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:21:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:21:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:21:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:21:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:21:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:21:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:21:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:21:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:21:37,348 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:21:37,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:21:37,737 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:21:37,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:37 BoogieIcfgContainer [2020-04-17 22:21:37,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:21:37,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:21:37,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:21:37,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:21:37,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:21:36" (1/3) ... [2020-04-17 22:21:37,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e719c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:37, skipping insertion in model container [2020-04-17 22:21:37,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:37" (2/3) ... [2020-04-17 22:21:37,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e719c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:37, skipping insertion in model container [2020-04-17 22:21:37,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:37" (3/3) ... [2020-04-17 22:21:37,753 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-04-17 22:21:37,764 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:21:37,765 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:21:37,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:21:37,776 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:21:37,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,802 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,803 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,803 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,804 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,804 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,804 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,805 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,805 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,807 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,808 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,808 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,808 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,809 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,809 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,820 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,820 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,821 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,821 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,824 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,825 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,825 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,825 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:37,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:21:37,870 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:21:37,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:21:37,870 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:21:37,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:21:37,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:21:37,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:21:37,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:21:37,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:21:37,886 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:37,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:37,935 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:37,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:37,941 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:21:37,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:37,966 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:37,966 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:37,967 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:21:37,969 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:21:37,970 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:21:39,838 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:21:39,943 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 22:21:39,943 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:21:39,951 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:21:40,000 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:21:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:21:40,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:21:40,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:40,016 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:40,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 22:21:40,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:40,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458238243] [2020-04-17 22:21:40,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:40,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458238243] [2020-04-17 22:21:40,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:40,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:40,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999959741] [2020-04-17 22:21:40,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:40,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:40,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:40,296 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:21:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:40,353 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:21:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:40,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:21:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:40,380 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:21:40,381 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:21:40,382 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 [2020-04-17 22:21:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:21:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:21:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:21:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:21:40,451 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:21:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:40,452 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:21:40,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:21:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:21:40,454 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:40,454 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:40,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:40,455 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 22:21:40,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:40,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115579453] [2020-04-17 22:21:40,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:40,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115579453] [2020-04-17 22:21:40,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:40,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:40,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23977304] [2020-04-17 22:21:40,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:40,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:40,523 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-17 22:21:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:40,551 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:21:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:40,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:21:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:40,555 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:21:40,555 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:21:40,557 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 [2020-04-17 22:21:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:21:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:21:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:21:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:21:40,591 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:21:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:40,591 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:21:40,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:21:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:21:40,595 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:40,595 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:40,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:40,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-17 22:21:40,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:40,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830116089] [2020-04-17 22:21:40,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:40,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830116089] [2020-04-17 22:21:40,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:40,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:40,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846037240] [2020-04-17 22:21:40,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:40,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:40,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:40,690 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:21:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:40,699 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-17 22:21:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:40,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:21:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:40,702 INFO L225 Difference]: With dead ends: 194 [2020-04-17 22:21:40,702 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 22:21:40,702 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 [2020-04-17 22:21:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 22:21:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 22:21:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 22:21:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-17 22:21:40,725 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-17 22:21:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:40,726 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-17 22:21:40,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-17 22:21:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:21:40,732 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:40,732 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:40,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:40,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 22:21:40,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:40,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252111195] [2020-04-17 22:21:40,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:40,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252111195] [2020-04-17 22:21:40,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:40,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:40,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183717661] [2020-04-17 22:21:40,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:40,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:40,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:40,859 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-17 22:21:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:40,926 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-17 22:21:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:40,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:21:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:40,928 INFO L225 Difference]: With dead ends: 225 [2020-04-17 22:21:40,928 INFO L226 Difference]: Without dead ends: 161 [2020-04-17 22:21:40,929 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 [2020-04-17 22:21:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-17 22:21:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-17 22:21:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-17 22:21:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-17 22:21:40,935 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-17 22:21:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:40,935 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-17 22:21:40,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-17 22:21:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:21:40,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:40,937 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:40,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-17 22:21:40,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:40,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782373711] [2020-04-17 22:21:40,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782373711] [2020-04-17 22:21:41,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:41,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485994882] [2020-04-17 22:21:41,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:21:41,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:21:41,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:21:41,004 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-04-17 22:21:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,055 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-17 22:21:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:21:41,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:21:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,057 INFO L225 Difference]: With dead ends: 160 [2020-04-17 22:21:41,057 INFO L226 Difference]: Without dead ends: 123 [2020-04-17 22:21:41,058 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 [2020-04-17 22:21:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-17 22:21:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-17 22:21:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-17 22:21:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-17 22:21:41,062 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-17 22:21:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,063 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-17 22:21:41,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:21:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-17 22:21:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:21:41,064 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,064 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-17 22:21:41,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599289922] [2020-04-17 22:21:41,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599289922] [2020-04-17 22:21:41,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:21:41,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190636291] [2020-04-17 22:21:41,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:21:41,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:21:41,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:21:41,135 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-04-17 22:21:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,190 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-17 22:21:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:21:41,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:21:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,192 INFO L225 Difference]: With dead ends: 118 [2020-04-17 22:21:41,192 INFO L226 Difference]: Without dead ends: 108 [2020-04-17 22:21:41,193 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 [2020-04-17 22:21:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-17 22:21:41,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-17 22:21:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-17 22:21:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-17 22:21:41,196 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-17 22:21:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,197 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-17 22:21:41,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:21:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-17 22:21:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:41,198 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,198 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,198 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 22:21:41,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011560477] [2020-04-17 22:21:41,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011560477] [2020-04-17 22:21:41,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:41,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804403381] [2020-04-17 22:21:41,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:41,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:41,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:41,250 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-04-17 22:21:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,278 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-04-17 22:21:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:41,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,280 INFO L225 Difference]: With dead ends: 133 [2020-04-17 22:21:41,280 INFO L226 Difference]: Without dead ends: 54 [2020-04-17 22:21:41,280 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 [2020-04-17 22:21:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-17 22:21:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-17 22:21:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 22:21:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-04-17 22:21:41,283 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-04-17 22:21:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,283 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-04-17 22:21:41,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-04-17 22:21:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:41,284 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,284 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,285 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-17 22:21:41,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478214940] [2020-04-17 22:21:41,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478214940] [2020-04-17 22:21:41,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:41,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504110107] [2020-04-17 22:21:41,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:41,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:41,321 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-04-17 22:21:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,339 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-04-17 22:21:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:41,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,341 INFO L225 Difference]: With dead ends: 63 [2020-04-17 22:21:41,341 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 22:21:41,341 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 [2020-04-17 22:21:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 22:21:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 22:21:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 22:21:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-04-17 22:21:41,343 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-04-17 22:21:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,344 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-04-17 22:21:41,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-04-17 22:21:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:41,345 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,345 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,345 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-04-17 22:21:41,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651349270] [2020-04-17 22:21:41,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651349270] [2020-04-17 22:21:41,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:41,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939717405] [2020-04-17 22:21:41,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:41,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:41,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:41,379 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-04-17 22:21:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,396 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-04-17 22:21:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:41,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,397 INFO L225 Difference]: With dead ends: 51 [2020-04-17 22:21:41,397 INFO L226 Difference]: Without dead ends: 30 [2020-04-17 22:21:41,398 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 [2020-04-17 22:21:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-04-17 22:21:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-04-17 22:21:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 22:21:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-04-17 22:21:41,399 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-04-17 22:21:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,400 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-04-17 22:21:41,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-04-17 22:21:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:41,400 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,400 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 4 times [2020-04-17 22:21:41,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-17 22:21:41,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:41,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-17 22:21:41,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:41,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:41,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669874879] [2020-04-17 22:21:41,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:41,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:41,437 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-04-17 22:21:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:41,450 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-04-17 22:21:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:41,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:41,451 INFO L225 Difference]: With dead ends: 29 [2020-04-17 22:21:41,451 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:21:41,451 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 [2020-04-17 22:21:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:21:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:21:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:21:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:21:41,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:21:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:41,452 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:21:41,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:21:41,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:21:41,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:21:41 BasicIcfg [2020-04-17 22:21:41,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:21:41,459 INFO L168 Benchmark]: Toolchain (without parser) took 5102.33 ms. Allocated memory was 145.8 MB in the beginning and 246.4 MB in the end (delta: 100.7 MB). Free memory was 102.0 MB in the beginning and 131.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,460 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.36 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 160.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.16 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,462 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,463 INFO L168 Benchmark]: RCFGBuilder took 458.55 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,464 INFO L168 Benchmark]: TraceAbstraction took 3713.89 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 133.8 MB in the beginning and 131.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:41,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 813.36 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 160.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.16 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.55 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3713.89 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 133.8 MB in the beginning and 131.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 206 SDtfs, 144 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4682 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...