/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/thin001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:38:39,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:38:39,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:38:39,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:38:39,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:38:39,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:38:39,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:38:39,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:38:39,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:38:39,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:38:39,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:38:39,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:38:39,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:38:39,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:38:39,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:38:39,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:38:39,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:38:39,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:38:39,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:38:39,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:38:39,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:38:39,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:38:39,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:38:39,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:38:39,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:38:39,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:38:39,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:38:39,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:38:39,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:38:39,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:38:39,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:38:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:38:39,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:38:39,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:38:39,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:38:39,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:38:39,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:38:39,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:38:39,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:38:39,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:38:39,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:38:39,628 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 22:38:39,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:38:39,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:38:39,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:38:39,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:38:39,659 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:38:39,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:38:39,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:38:39,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:38:39,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:38:39,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:38:39,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:38:39,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:38:39,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:38:39,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:38:39,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:38:39,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:38:39,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:38:39,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:38:39,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:38:39,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:38:39,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:38:39,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:38:39,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:38:39,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:38:39,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:38:39,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:38:39,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:38:39,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:38:39,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:38:39,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:38:39,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:38:39,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:38:39,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:38:39,955 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:38:39,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-04-17 22:38:40,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb02b0972/cb3efb8bf913413f9903fa309ed24e25/FLAGb4adccb41 [2020-04-17 22:38:40,541 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:38:40,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-04-17 22:38:40,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb02b0972/cb3efb8bf913413f9903fa309ed24e25/FLAGb4adccb41 [2020-04-17 22:38:40,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb02b0972/cb3efb8bf913413f9903fa309ed24e25 [2020-04-17 22:38:40,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:38:40,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:38:40,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:38:40,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:38:40,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:38:40,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:38:40" (1/1) ... [2020-04-17 22:38:40,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db092f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:40, skipping insertion in model container [2020-04-17 22:38:40,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:38:40" (1/1) ... [2020-04-17 22:38:40,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:38:40,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:38:41,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:38:41,430 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:38:41,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:38:41,564 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:38:41,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41 WrapperNode [2020-04-17 22:38:41,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:38:41,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:38:41,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:38:41,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:38:41,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:38:41,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:38:41,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:38:41,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:38:41,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (1/1) ... [2020-04-17 22:38:41,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:38:41,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:38:41,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:38:41,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:38:41,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (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 22:38:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:38:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:38:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:38:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:38:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:38:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:38:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:38:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:38:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:38:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:38:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:38:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:38:41,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:38:41,724 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 22:38:42,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:38:42,112 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:38:42,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:38:42 BoogieIcfgContainer [2020-04-17 22:38:42,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:38:42,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:38:42,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:38:42,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:38:42,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:38:40" (1/3) ... [2020-04-17 22:38:42,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:38:42, skipping insertion in model container [2020-04-17 22:38:42,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:41" (2/3) ... [2020-04-17 22:38:42,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:38:42, skipping insertion in model container [2020-04-17 22:38:42,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:38:42" (3/3) ... [2020-04-17 22:38:42,126 INFO L109 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2020-04-17 22:38:42,136 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:38:42,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:38:42,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:38:42,147 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:38:42,173 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,175 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,176 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,176 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,176 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,177 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,178 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,178 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,178 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,178 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,179 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,179 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,183 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,184 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,184 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,184 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,189 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,190 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,191 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,191 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,199 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,199 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,200 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,200 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:42,216 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:38:42,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:38:42,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:38:42,236 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:38:42,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:38:42,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:38:42,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:38:42,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:38:42,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:38:42,252 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:42,255 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:42,297 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:38:42,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:38:42,302 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:38:42,305 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:42,325 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:38:42,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:38:42,327 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:38:42,329 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:38:42,330 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:38:43,777 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 22:38:43,906 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 22:38:43,906 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 22:38:43,914 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:38:43,970 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:38:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:38:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:38:43,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:43,985 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:43,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 22:38:44,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:44,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103253448] [2020-04-17 22:38:44,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:44,225 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 22:38:44,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103253448] [2020-04-17 22:38:44,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:44,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:38:44,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180429172] [2020-04-17 22:38:44,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:38:44,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:38:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:38:44,250 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:38:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:44,293 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:38:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:38:44,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:38:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:44,313 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:38:44,314 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:38:44,315 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:38:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:38:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:38:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:38:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:38:44,396 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:38:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:44,398 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:38:44,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:38:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:38:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:38:44,399 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:44,400 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:44,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:44,400 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 22:38:44,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:44,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809789446] [2020-04-17 22:38:44,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:44,542 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 22:38:44,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809789446] [2020-04-17 22:38:44,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:44,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:44,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034612176] [2020-04-17 22:38:44,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:44,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:44,548 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-17 22:38:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:44,636 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 22:38:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:38:44,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-17 22:38:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:44,640 INFO L225 Difference]: With dead ends: 330 [2020-04-17 22:38:44,640 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 22:38:44,641 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:38:44,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 22:38:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 22:38:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 22:38:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 22:38:44,683 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 22:38:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:44,683 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 22:38:44,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 22:38:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:38:44,685 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:44,685 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:44,685 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:44,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-04-17 22:38:44,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:44,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482085114] [2020-04-17 22:38:44,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:44,801 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 22:38:44,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482085114] [2020-04-17 22:38:44,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:44,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:38:44,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180118723] [2020-04-17 22:38:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:38:44,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:44,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:38:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:38:44,804 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 22:38:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:44,905 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-04-17 22:38:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:38:44,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 22:38:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:44,907 INFO L225 Difference]: With dead ends: 344 [2020-04-17 22:38:44,907 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 22:38:44,908 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:38:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 22:38:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 22:38:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 22:38:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-04-17 22:38:44,917 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-04-17 22:38:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:44,918 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-04-17 22:38:44,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:38:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-04-17 22:38:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:38:44,920 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:44,920 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:44,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-17 22:38:44,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:44,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168245005] [2020-04-17 22:38:44,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:45,034 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 22:38:45,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168245005] [2020-04-17 22:38:45,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:45,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:45,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125801333] [2020-04-17 22:38:45,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:45,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:45,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:45,038 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 5 states. [2020-04-17 22:38:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:45,107 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-04-17 22:38:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:38:45,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:38:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:45,109 INFO L225 Difference]: With dead ends: 182 [2020-04-17 22:38:45,109 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:38:45,110 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:38:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:38:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:38:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:38:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-04-17 22:38:45,116 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-04-17 22:38:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:45,117 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-04-17 22:38:45,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-04-17 22:38:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:38:45,118 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:45,118 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:45,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash -762243594, now seen corresponding path program 1 times [2020-04-17 22:38:45,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:45,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33877094] [2020-04-17 22:38:45,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:45,180 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 22:38:45,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33877094] [2020-04-17 22:38:45,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:45,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:45,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797019186] [2020-04-17 22:38:45,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:45,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:45,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:45,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:45,184 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 5 states. [2020-04-17 22:38:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:45,234 INFO L93 Difference]: Finished difference Result 215 states and 510 transitions. [2020-04-17 22:38:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:38:45,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:38:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:45,236 INFO L225 Difference]: With dead ends: 215 [2020-04-17 22:38:45,236 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 22:38:45,236 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:38:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 22:38:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 22:38:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 22:38:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 234 transitions. [2020-04-17 22:38:45,241 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 234 transitions. Word has length 13 [2020-04-17 22:38:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:45,241 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 234 transitions. [2020-04-17 22:38:45,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 234 transitions. [2020-04-17 22:38:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:38:45,242 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:45,242 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:45,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash 165801177, now seen corresponding path program 1 times [2020-04-17 22:38:45,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:45,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054181143] [2020-04-17 22:38:45,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:45,293 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 22:38:45,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054181143] [2020-04-17 22:38:45,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:45,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:45,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055998722] [2020-04-17 22:38:45,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:45,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:45,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:45,295 INFO L87 Difference]: Start difference. First operand 104 states and 234 transitions. Second operand 5 states. [2020-04-17 22:38:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:45,338 INFO L93 Difference]: Finished difference Result 89 states and 194 transitions. [2020-04-17 22:38:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:38:45,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:38:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:45,339 INFO L225 Difference]: With dead ends: 89 [2020-04-17 22:38:45,339 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:38:45,340 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:38:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:38:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:38:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:38:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:38:45,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 22:38:45,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:45,341 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:38:45,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:38:45,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:38:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:38:45 BasicIcfg [2020-04-17 22:38:45,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:38:45,347 INFO L168 Benchmark]: Toolchain (without parser) took 4498.98 ms. Allocated memory was 146.3 MB in the beginning and 245.4 MB in the end (delta: 99.1 MB). Free memory was 102.9 MB in the beginning and 175.5 MB in the end (delta: -72.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,348 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.57 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 160.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,351 INFO L168 Benchmark]: Boogie Preprocessor took 34.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.6 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,351 INFO L168 Benchmark]: RCFGBuilder took 454.35 ms. Allocated memory is still 203.9 MB. Free memory was 157.3 MB in the beginning and 134.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,352 INFO L168 Benchmark]: TraceAbstraction took 3227.70 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.6 MB in the beginning and 175.5 MB in the end (delta: -41.0 MB). Peak memory consumption was 448.3 kB. Max. memory is 7.1 GB. [2020-04-17 22:38:45,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.57 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 160.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.6 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.35 ms. Allocated memory is still 203.9 MB. Free memory was 157.3 MB in the beginning and 134.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3227.70 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.6 MB in the beginning and 175.5 MB in the end (delta: -41.0 MB). Peak memory consumption was 448.3 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 124 SDtfs, 182 SDslu, 233 SDs, 0 SdLazy, 114 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...