/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:04:44,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:04:44,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:04:44,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:04:44,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:04:44,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:04:44,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:04:44,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:04:44,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:04:44,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:04:44,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:04:44,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:04:44,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:04:44,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:04:44,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:04:44,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:04:44,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:04:44,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:04:44,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:04:44,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:04:44,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:04:44,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:04:44,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:04:44,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:04:44,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:04:44,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:04:44,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:04:44,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:04:44,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:04:44,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:04:44,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:04:44,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:04:44,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:04:44,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:04:44,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:04:44,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:04:44,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:04:44,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:04:44,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:04:44,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:04:44,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:04:44,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:04:44,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:04:44,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:04:44,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:04:44,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:04:44,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:04:44,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:04:44,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:04:44,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:04:44,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:04:44,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:04:44,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:04:44,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:04:44,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:04:44,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:04:44,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:04:44,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:04:44,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:04:44,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:04:44,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:04:44,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:04:44,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:04:44,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:04:44,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:04:44,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:04:44,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:04:44,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:04:44,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:04:44,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:04:44,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:04:44,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:04:44,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:04:44,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:04:44,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:04:44,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:04:44,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:04:44,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-11 15:04:44,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d23f4b8c/9e633e22739c4d689bbeb86f0e451b63/FLAG4683e8534 [2020-10-11 15:04:45,525 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:04:45,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-11 15:04:45,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d23f4b8c/9e633e22739c4d689bbeb86f0e451b63/FLAG4683e8534 [2020-10-11 15:04:45,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d23f4b8c/9e633e22739c4d689bbeb86f0e451b63 [2020-10-11 15:04:45,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:04:45,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:04:45,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:45,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:04:45,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:04:45,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:45" (1/1) ... [2020-10-11 15:04:45,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:45, skipping insertion in model container [2020-10-11 15:04:45,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:45" (1/1) ... [2020-10-11 15:04:45,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:04:45,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:04:46,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:46,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:04:46,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:46,463 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:04:46,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46 WrapperNode [2020-10-11 15:04:46,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:46,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:46,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:04:46,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:04:46,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:46,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:04:46,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:04:46,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:04:46,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (1/1) ... [2020-10-11 15:04:46,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:04:46,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:04:46,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:04:46,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:04:46,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (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 [2020-10-11 15:04:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:04:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:04:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:04:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:04:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:04:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:04:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:04:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:04:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:04:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:04:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:04:46,632 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:04:46,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:04:46,997 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:04:46,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:46 BoogieIcfgContainer [2020-10-11 15:04:46,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:04:47,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:04:47,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:04:47,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:04:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:04:45" (1/3) ... [2020-10-11 15:04:47,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bf5954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:47, skipping insertion in model container [2020-10-11 15:04:47,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:46" (2/3) ... [2020-10-11 15:04:47,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bf5954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:47, skipping insertion in model container [2020-10-11 15:04:47,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:46" (3/3) ... [2020-10-11 15:04:47,007 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-11 15:04:47,019 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:04:47,019 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:04:47,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:04:47,029 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:04:47,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,059 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,060 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,060 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,065 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,065 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,072 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:47,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:04:47,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:04:47,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:04:47,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:04:47,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:04:47,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:04:47,114 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:04:47,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:04:47,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:04:47,129 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:04:47,131 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:47,134 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:47,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:47,188 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 15:04:47,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:04:47,195 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 15:04:47,197 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-11 15:04:48,795 INFO L132 LiptonReduction]: Checked pairs total: 2298 [2020-10-11 15:04:48,795 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-11 15:04:48,802 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-11 15:04:48,834 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-11 15:04:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-11 15:04:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:04:48,852 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:48,853 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:48,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-10-11 15:04:48,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:48,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086022445] [2020-10-11 15:04:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086022445] [2020-10-11 15:04:49,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:49,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291147686] [2020-10-11 15:04:49,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:49,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:49,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:49,144 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-11 15:04:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,213 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-11 15:04:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:49,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-11 15:04:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,238 INFO L225 Difference]: With dead ends: 282 [2020-10-11 15:04:49,239 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 15:04:49,240 INFO L673 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 [2020-10-11 15:04:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 15:04:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-11 15:04:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-11 15:04:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-11 15:04:49,337 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-11 15:04:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,339 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-11 15:04:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-11 15:04:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:04:49,342 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,342 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:04:49,343 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-10-11 15:04:49,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105416343] [2020-10-11 15:04:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105416343] [2020-10-11 15:04:49,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:49,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200728713] [2020-10-11 15:04:49,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:49,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:49,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:49,440 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-11 15:04:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,464 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-11 15:04:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:49,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 15:04:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,466 INFO L225 Difference]: With dead ends: 242 [2020-10-11 15:04:49,467 INFO L226 Difference]: Without dead ends: 146 [2020-10-11 15:04:49,467 INFO L673 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 [2020-10-11 15:04:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-11 15:04:49,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-11 15:04:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-11 15:04:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-11 15:04:49,477 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-11 15:04:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,478 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-11 15:04:49,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-11 15:04:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:04:49,479 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,479 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:04:49,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 1 times [2020-10-11 15:04:49,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453082659] [2020-10-11 15:04:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453082659] [2020-10-11 15:04:49,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:49,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260763292] [2020-10-11 15:04:49,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:49,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:49,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:49,532 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-11 15:04:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,539 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-11 15:04:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:49,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-11 15:04:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,542 INFO L225 Difference]: With dead ends: 144 [2020-10-11 15:04:49,542 INFO L226 Difference]: Without dead ends: 144 [2020-10-11 15:04:49,542 INFO L673 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 [2020-10-11 15:04:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-11 15:04:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-11 15:04:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 15:04:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-11 15:04:49,551 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-11 15:04:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,551 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-11 15:04:49,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-11 15:04:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:04:49,553 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,553 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:04:49,553 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-10-11 15:04:49,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027556059] [2020-10-11 15:04:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027556059] [2020-10-11 15:04:49,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:49,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305034683] [2020-10-11 15:04:49,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:49,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:49,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:49,681 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-10-11 15:04:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,734 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-10-11 15:04:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:49,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:04:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,737 INFO L225 Difference]: With dead ends: 164 [2020-10-11 15:04:49,737 INFO L226 Difference]: Without dead ends: 124 [2020-10-11 15:04:49,738 INFO L673 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 [2020-10-11 15:04:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-11 15:04:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-11 15:04:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 15:04:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-10-11 15:04:49,754 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-10-11 15:04:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,754 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-10-11 15:04:49,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-10-11 15:04:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:04:49,756 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,756 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:04:49,756 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,757 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-10-11 15:04:49,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217837944] [2020-10-11 15:04:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217837944] [2020-10-11 15:04:49,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:49,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910310113] [2020-10-11 15:04:49,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:49,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:49,844 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-10-11 15:04:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,899 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-11 15:04:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:49,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:04:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,900 INFO L225 Difference]: With dead ends: 122 [2020-10-11 15:04:49,901 INFO L226 Difference]: Without dead ends: 97 [2020-10-11 15:04:49,901 INFO L673 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 [2020-10-11 15:04:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-11 15:04:49,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-11 15:04:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-11 15:04:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-11 15:04:49,906 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-10-11 15:04:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,907 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-11 15:04:49,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-11 15:04:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:04:49,908 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,908 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:04:49,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-10-11 15:04:49,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302041287] [2020-10-11 15:04:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:49,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302041287] [2020-10-11 15:04:49,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:49,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:49,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176182452] [2020-10-11 15:04:49,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:49,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:49,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:49,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:49,944 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-11 15:04:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:49,953 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-11 15:04:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:49,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-11 15:04:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:49,955 INFO L225 Difference]: With dead ends: 115 [2020-10-11 15:04:49,955 INFO L226 Difference]: Without dead ends: 98 [2020-10-11 15:04:49,956 INFO L673 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 [2020-10-11 15:04:49,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-11 15:04:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-11 15:04:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-11 15:04:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-11 15:04:49,960 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-11 15:04:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:49,960 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-11 15:04:49,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-11 15:04:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:04:49,961 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:49,961 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:49,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:04:49,962 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-10-11 15:04:49,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:49,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430324869] [2020-10-11 15:04:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:50,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430324869] [2020-10-11 15:04:50,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:50,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:04:50,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807315541] [2020-10-11 15:04:50,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:04:50,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:50,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:04:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:04:50,052 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-11 15:04:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:50,110 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-11 15:04:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:04:50,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-11 15:04:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:50,111 INFO L225 Difference]: With dead ends: 92 [2020-10-11 15:04:50,111 INFO L226 Difference]: Without dead ends: 36 [2020-10-11 15:04:50,112 INFO L673 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 [2020-10-11 15:04:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-11 15:04:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-11 15:04:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 15:04:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-11 15:04:50,114 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-11 15:04:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:50,114 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-11 15:04:50,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:04:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-11 15:04:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:04:50,115 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:50,115 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:50,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:04:50,116 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-10-11 15:04:50,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:50,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887077755] [2020-10-11 15:04:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:50,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887077755] [2020-10-11 15:04:50,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:50,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:50,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321950922] [2020-10-11 15:04:50,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:50,153 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-11 15:04:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:50,164 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-11 15:04:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:50,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-11 15:04:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:50,165 INFO L225 Difference]: With dead ends: 35 [2020-10-11 15:04:50,165 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:04:50,165 INFO L673 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 [2020-10-11 15:04:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:04:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:04:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:04:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:04:50,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-11 15:04:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:50,166 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:04:50,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:04:50,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:04:50,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:04:50,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:04:50 BasicIcfg [2020-10-11 15:04:50,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:04:50,173 INFO L168 Benchmark]: Toolchain (without parser) took 4352.69 ms. Allocated memory was 253.2 MB in the beginning and 374.3 MB in the end (delta: 121.1 MB). Free memory was 209.2 MB in the beginning and 251.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 79.2 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,174 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:04:50,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.47 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 209.2 MB in the beginning and 274.2 MB in the end (delta: -65.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 320.9 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,177 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 320.9 MB. Free memory was 271.7 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,178 INFO L168 Benchmark]: RCFGBuilder took 453.45 ms. Allocated memory is still 320.9 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,179 INFO L168 Benchmark]: TraceAbstraction took 3170.74 ms. Allocated memory was 320.9 MB in the beginning and 374.3 MB in the end (delta: 53.5 MB). Free memory was 247.3 MB in the beginning and 251.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 49.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:50,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 643.47 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 209.2 MB in the beginning and 274.2 MB in the end (delta: -65.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 320.9 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.84 ms. Allocated memory is still 320.9 MB. Free memory was 271.7 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 453.45 ms. Allocated memory is still 320.9 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3170.74 ms. Allocated memory was 320.9 MB in the beginning and 374.3 MB in the end (delta: 53.5 MB). Free memory was 247.3 MB in the beginning and 251.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 49.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 833 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2298 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 145 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...