/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/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:00:34,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:00:34,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:00:34,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:00:34,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:00:34,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:00:34,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:00:34,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:00:34,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:00:34,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:00:34,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:00:34,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:00:34,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:00:34,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:00:34,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:00:34,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:00:34,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:00:34,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:00:34,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:00:35,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:00:35,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:00:35,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:00:35,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:00:35,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:00:35,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:00:35,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:00:35,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:00:35,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:00:35,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:00:35,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:00:35,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:00:35,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:00:35,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:00:35,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:00:35,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:00:35,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:00:35,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:00:35,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:00:35,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:00:35,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:00:35,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:00:35,023 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 02:00:35,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:00:35,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:00:35,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:00:35,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:00:35,051 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:00:35,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:00:35,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:00:35,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:00:35,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:00:35,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:00:35,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:00:35,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:00:35,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:00:35,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:00:35,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:00:35,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:00:35,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:00:35,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:00:35,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:00:35,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:00:35,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:00:35,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:00:35,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:00:35,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:00:35,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:00:35,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:00:35,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:00:35,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:00:35,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:00:35,364 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:00:35,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 02:00:35,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0dac0d1/4389cb8dad6a41bda52b1eba622f0189/FLAGd300ed6eb [2020-04-18 02:00:36,000 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:00:36,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 02:00:36,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0dac0d1/4389cb8dad6a41bda52b1eba622f0189/FLAGd300ed6eb [2020-04-18 02:00:36,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0dac0d1/4389cb8dad6a41bda52b1eba622f0189 [2020-04-18 02:00:36,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:00:36,342 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:00:36,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:36,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:00:36,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:00:36,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:36" (1/1) ... [2020-04-18 02:00:36,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:36, skipping insertion in model container [2020-04-18 02:00:36,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:36" (1/1) ... [2020-04-18 02:00:36,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:00:36,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:00:36,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:36,960 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:00:37,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:37,120 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:00:37,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37 WrapperNode [2020-04-18 02:00:37,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:37,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:37,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:00:37,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:00:37,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:37,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:00:37,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:00:37,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:00:37,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (1/1) ... [2020-04-18 02:00:37,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:00:37,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:00:37,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:00:37,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:00:37,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (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 [2020-04-18 02:00:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:00:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:00:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:00:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:00:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:00:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:00:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:00:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:00:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:00:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:00:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:00:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:00:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:00:37,254 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 02:00:37,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:00:37,622 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:00:37,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:37 BoogieIcfgContainer [2020-04-18 02:00:37,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:00:37,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:00:37,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:00:37,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:00:37,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:00:36" (1/3) ... [2020-04-18 02:00:37,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d410e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:37, skipping insertion in model container [2020-04-18 02:00:37,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:37" (2/3) ... [2020-04-18 02:00:37,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d410e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:37, skipping insertion in model container [2020-04-18 02:00:37,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:37" (3/3) ... [2020-04-18 02:00:37,635 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-04-18 02:00:37,645 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:00:37,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:00:37,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:00:37,654 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:00:37,680 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,680 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,680 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,681 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,681 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,682 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,682 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,682 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,683 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,683 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,683 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,684 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,685 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,685 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,685 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,685 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,690 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,691 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,697 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,697 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,698 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,698 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,700 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,701 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,701 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,701 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:37,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:00:37,735 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:00:37,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:00:37,736 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:00:37,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:00:37,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:00:37,736 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:00:37,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:00:37,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:00:37,752 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:37,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:37,799 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:37,800 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:37,804 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 46 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. [2020-04-18 02:00:37,807 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:37,829 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:37,829 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:37,830 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 46 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. [2020-04-18 02:00:37,832 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:00:37,833 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:00:39,163 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:00:39,334 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:00:39,334 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:00:39,338 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:00:39,379 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:00:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:00:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:00:39,394 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:39,395 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:39,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:00:39,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:39,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079684015] [2020-04-18 02:00:39,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:39,630 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 02:00:39,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079684015] [2020-04-18 02:00:39,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:39,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:00:39,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872106300] [2020-04-18 02:00:39,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:00:39,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:39,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:00:39,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:00:39,655 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:00:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:39,697 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:00:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:00:39,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:00:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:39,715 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:00:39,715 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:00:39,716 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:00:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:00:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:00:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:00:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:00:39,786 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:00:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:39,788 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:00:39,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:00:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:00:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:00:39,790 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:39,790 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:39,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 02:00:39,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:39,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191819757] [2020-04-18 02:00:39,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:39,871 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 02:00:39,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191819757] [2020-04-18 02:00:39,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:39,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:39,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573968782] [2020-04-18 02:00:39,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:39,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:39,875 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:00:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:39,913 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-04-18 02:00:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:39,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:00:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:39,916 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:00:39,916 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:00:39,917 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 02:00:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:00:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:00:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:00:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-04-18 02:00:39,935 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-04-18 02:00:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:39,936 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-04-18 02:00:39,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-04-18 02:00:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:39,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:39,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:39,938 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-04-18 02:00:39,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:39,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809096203] [2020-04-18 02:00:39,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:40,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809096203] [2020-04-18 02:00:40,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:40,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:00:40,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377039695] [2020-04-18 02:00:40,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:40,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:40,003 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-04-18 02:00:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:40,036 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-04-18 02:00:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:00:40,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:40,038 INFO L225 Difference]: With dead ends: 244 [2020-04-18 02:00:40,038 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 02:00:40,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:00:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 02:00:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-04-18 02:00:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-18 02:00:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-04-18 02:00:40,055 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-04-18 02:00:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:40,056 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-04-18 02:00:40,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-04-18 02:00:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:40,057 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:40,058 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:40,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-18 02:00:40,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:40,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549512066] [2020-04-18 02:00:40,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:40,157 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 02:00:40,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549512066] [2020-04-18 02:00:40,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:40,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:40,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460806100] [2020-04-18 02:00:40,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:40,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:40,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:40,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:40,160 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-04-18 02:00:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:40,184 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-04-18 02:00:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:40,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:40,185 INFO L225 Difference]: With dead ends: 140 [2020-04-18 02:00:40,185 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 02:00:40,186 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 02:00:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 02:00:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 02:00:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:00:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 02:00:40,191 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-04-18 02:00:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:40,192 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 02:00:40,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 02:00:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:00:40,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:40,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:40,193 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-18 02:00:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:40,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313995446] [2020-04-18 02:00:40,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:40,275 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 02:00:40,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313995446] [2020-04-18 02:00:40,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:40,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:40,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385224282] [2020-04-18 02:00:40,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:40,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:40,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:40,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:40,279 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-18 02:00:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:40,294 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-04-18 02:00:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:40,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:00:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:40,295 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:00:40,295 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:00:40,296 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 02:00:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:00:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:00:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:00:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:00:40,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-04-18 02:00:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:40,297 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:00:40,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:00:40,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:00:40,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:00:40 BasicIcfg [2020-04-18 02:00:40,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:00:40,304 INFO L168 Benchmark]: Toolchain (without parser) took 3981.95 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.0 MB in the beginning and 113.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,305 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.13 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 160.7 MB in the end (delta: -60.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.37 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,308 INFO L168 Benchmark]: Boogie Preprocessor took 28.12 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,308 INFO L168 Benchmark]: RCFGBuilder took 426.99 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,309 INFO L168 Benchmark]: TraceAbstraction took 2674.94 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 134.4 MB in the beginning and 113.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:40,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.13 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 160.7 MB in the end (delta: -60.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.37 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.12 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.99 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2674.94 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 134.4 MB in the beginning and 113.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 90 SDtfs, 88 SDslu, 88 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...