/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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:23:20,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:23:20,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:23:20,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:23:20,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:23:20,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:23:20,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:23:20,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:23:20,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:23:20,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:23:20,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:23:20,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:23:20,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:23:20,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:23:20,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:23:20,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:23:20,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:23:20,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:23:20,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:23:20,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:23:20,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:23:20,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:23:20,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:23:20,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:23:20,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:23:20,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:23:20,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:23:20,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:23:20,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:23:20,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:23:20,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:23:20,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:23:20,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:23:20,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:23:20,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:23:20,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:23:20,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:23:20,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:23:20,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:23:20,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:23:20,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:23:20,617 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 02:23:20,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:23:20,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:23:20,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:23:20,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:23:20,632 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:23:20,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:23:20,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:23:20,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:23:20,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:23:20,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:23:20,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:23:20,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:23:20,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:23:20,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:23:20,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:23:20,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:23:20,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:23:20,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:23:20,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:23:20,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:23:20,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:23:20,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:23:20,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:23:20,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:23:20,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:23:20,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:23:20,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:23:20,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:23:20,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:23:20,928 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:23:20,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 02:23:20,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1c096e8/38abf6baa122409baeb35f913ad6ab05/FLAG212e8a246 [2020-04-18 02:23:21,564 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:23:21,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 02:23:21,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1c096e8/38abf6baa122409baeb35f913ad6ab05/FLAG212e8a246 [2020-04-18 02:23:21,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1c096e8/38abf6baa122409baeb35f913ad6ab05 [2020-04-18 02:23:21,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:23:21,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:23:21,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:23:21,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:23:21,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:23:21,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d44dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21, skipping insertion in model container [2020-04-18 02:23:21,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:23:21,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:23:22,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:23:22,432 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:23:22,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:23:22,552 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:23:22,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22 WrapperNode [2020-04-18 02:23:22,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:23:22,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:23:22,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:23:22,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:23:22,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:23:22,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:23:22,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:23:22,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:23:22,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (1/1) ... [2020-04-18 02:23:22,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:23:22,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:23:22,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:23:22,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:23:22,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (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 02:23:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:23:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:23:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:23:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:23:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:23:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:23:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:23:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:23:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:23:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:23:22,690 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 02:23:23,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:23:23,048 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:23:23,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:23:23 BoogieIcfgContainer [2020-04-18 02:23:23,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:23:23,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:23:23,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:23:23,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:23:23,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:23:21" (1/3) ... [2020-04-18 02:23:23,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44550fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:23:23, skipping insertion in model container [2020-04-18 02:23:23,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:22" (2/3) ... [2020-04-18 02:23:23,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44550fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:23:23, skipping insertion in model container [2020-04-18 02:23:23,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:23:23" (3/3) ... [2020-04-18 02:23:23,062 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-04-18 02:23:23,074 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:23:23,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:23:23,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:23:23,083 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:23:23,109 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,109 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,110 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,110 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,111 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,111 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,111 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,112 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,112 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,112 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,113 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,113 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,113 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,114 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,114 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,114 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,114 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,115 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,120 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,120 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,137 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,139 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,139 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,139 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:23,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:23:23,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:23:23,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:23:23,192 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:23:23,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:23:23,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:23:23,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:23:23,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:23:23,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:23:23,209 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:23,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:23,260 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:23:23,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:23:23,271 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:23:23,276 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:23,318 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:23:23,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:23:23,319 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:23:23,322 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:23:23,323 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:23:24,781 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 02:23:24,781 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:23:24,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:23:24,811 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:23:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:23:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:23:24,821 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,822 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,822 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 02:23:24,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431507136] [2020-04-18 02:23:24,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,082 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 02:23:25,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431507136] [2020-04-18 02:23:25,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:23:25,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227423149] [2020-04-18 02:23:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:25,118 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:23:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,184 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:23:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:25,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:23:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,229 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:23:25,229 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:23:25,231 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 02:23:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:23:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:23:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:23:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:23:25,327 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:23:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,329 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:23:25,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:23:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:23:25,330 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,330 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 02:23:25,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727915351] [2020-04-18 02:23:25,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,426 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 02:23:25,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727915351] [2020-04-18 02:23:25,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:25,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343159849] [2020-04-18 02:23:25,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:25,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:25,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:25,430 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:23:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,467 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:23:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:23:25,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:23:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,472 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:23:25,472 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:23:25,473 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 02:23:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:23:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:23:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:23:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:23:25,486 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:23:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,487 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:23:25,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:23:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:23:25,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,489 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 02:23:25,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701903255] [2020-04-18 02:23:25,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,566 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 02:23:25,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701903255] [2020-04-18 02:23:25,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:25,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167446924] [2020-04-18 02:23:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:25,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:25,569 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:23:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,611 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:23:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:23:25,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:23:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,615 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:23:25,615 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:23:25,615 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:23:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:23:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:23:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:23:25,632 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:23:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,632 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:23:25,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:23:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:23:25,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,634 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 02:23:25,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122101784] [2020-04-18 02:23:25,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,700 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 02:23:25,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122101784] [2020-04-18 02:23:25,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:23:25,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358369204] [2020-04-18 02:23:25,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:25,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:25,703 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-18 02:23:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,715 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 02:23:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:25,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:23:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,717 INFO L225 Difference]: With dead ends: 144 [2020-04-18 02:23:25,717 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:23:25,718 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 02:23:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:23:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:23:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:23:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:23:25,730 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 02:23:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,730 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:23:25,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:23:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:23:25,732 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,732 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,732 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 02:23:25,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819074017] [2020-04-18 02:23:25,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,808 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 02:23:25,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819074017] [2020-04-18 02:23:25,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:25,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600131322] [2020-04-18 02:23:25,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:25,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:25,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:25,811 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:23:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,852 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:23:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:23:25,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:23:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,856 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:23:25,856 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:23:25,856 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 02:23:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:23:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:23:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:23:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:23:25,869 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:23:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,869 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:23:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:23:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:23:25,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,871 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 02:23:25,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681728136] [2020-04-18 02:23:25,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,935 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 02:23:25,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681728136] [2020-04-18 02:23:25,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:25,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154770388] [2020-04-18 02:23:25,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:23:25,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:23:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:25,939 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:23:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,985 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:23:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:23:25,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:23:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,986 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:23:25,987 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:23:25,987 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:23:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:23:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:23:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:23:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:23:25,991 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:23:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,991 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:23:25,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:23:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:23:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:23:25,993 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,993 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 02:23:25,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723333845] [2020-04-18 02:23:25,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:26,028 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 02:23:26,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723333845] [2020-04-18 02:23:26,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:26,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:26,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269987216] [2020-04-18 02:23:26,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:26,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:26,031 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:23:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:26,039 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:23:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:26,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:23:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:26,041 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:23:26,041 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:23:26,041 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:23:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:23:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:23:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:23:26,045 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:23:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:26,046 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:23:26,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:23:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:23:26,047 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:26,047 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:26,047 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 02:23:26,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:26,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678728621] [2020-04-18 02:23:26,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:26,082 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 02:23:26,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678728621] [2020-04-18 02:23:26,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:26,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:26,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333921358] [2020-04-18 02:23:26,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:26,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:26,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:26,084 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-18 02:23:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:26,106 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-18 02:23:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:23:26,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:23:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:26,108 INFO L225 Difference]: With dead ends: 114 [2020-04-18 02:23:26,108 INFO L226 Difference]: Without dead ends: 76 [2020-04-18 02:23:26,109 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-18 02:23:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-18 02:23:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-18 02:23:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-18 02:23:26,112 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-18 02:23:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:26,112 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-18 02:23:26,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-18 02:23:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:23:26,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:26,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:26,113 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-18 02:23:26,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:26,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958276440] [2020-04-18 02:23:26,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:26,168 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 02:23:26,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958276440] [2020-04-18 02:23:26,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:26,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:23:26,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940499871] [2020-04-18 02:23:26,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:23:26,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:23:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:23:26,171 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-18 02:23:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:26,215 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-18 02:23:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:23:26,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:23:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:26,215 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:23:26,216 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:23:26,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:23:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:23:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:23:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:23:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:23:26,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:23:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:26,217 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:23:26,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:23:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:23:26,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:23:26,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:23:26 BasicIcfg [2020-04-18 02:23:26,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:23:26,242 INFO L168 Benchmark]: Toolchain (without parser) took 4381.59 ms. Allocated memory was 144.2 MB in the beginning and 248.5 MB in the end (delta: 104.3 MB). Free memory was 100.4 MB in the beginning and 216.5 MB in the end (delta: -116.1 MB). Peak memory consumption was 116.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,244 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.43 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.4 MB in the beginning and 158.0 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.51 ms. Allocated memory is still 201.3 MB. Free memory was 158.0 MB in the beginning and 155.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,252 INFO L168 Benchmark]: Boogie Preprocessor took 27.27 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,253 INFO L168 Benchmark]: RCFGBuilder took 420.81 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 132.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,254 INFO L168 Benchmark]: TraceAbstraction took 3185.27 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 216.5 MB in the end (delta: -84.5 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:26,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.43 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.4 MB in the beginning and 158.0 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.51 ms. Allocated memory is still 201.3 MB. Free memory was 158.0 MB in the beginning and 155.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.27 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.81 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 132.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3185.27 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 216.5 MB in the end (delta: -84.5 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...