/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:29:50,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:29:50,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:29:50,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:29:50,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:29:50,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:29:50,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:29:50,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:29:50,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:29:50,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:29:50,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:29:50,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:29:50,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:29:50,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:29:50,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:29:50,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:29:50,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:29:50,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:29:50,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:29:50,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:29:50,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:29:50,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:29:50,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:29:50,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:29:50,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:29:50,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:29:50,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:29:50,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:29:50,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:29:50,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:29:50,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:29:50,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:29:50,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:29:50,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:29:50,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:29:50,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:29:50,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:29:50,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:29:50,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:29:50,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:29:50,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:29:50,517 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 02:29:50,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:29:50,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:29:50,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:29:50,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:29:50,532 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:29:50,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:29:50,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:29:50,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:29:50,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:29:50,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:29:50,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:29:50,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:29:50,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:29:50,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:29:50,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:29:50,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:29:50,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:29:50,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:29:50,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:29:50,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:29:50,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:29:50,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:29:50,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:29:50,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:29:50,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:29:50,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:29:50,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:29:50,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:29:50,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:29:50,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:29:50,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:29:50,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:29:50,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:29:50,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:29:50,827 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:29:50,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 02:29:50,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9f6ee5/b072eed7f4d84c7785e4b0f8105b3193/FLAG7c4b467e0 [2020-04-18 02:29:51,441 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:29:51,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 02:29:51,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9f6ee5/b072eed7f4d84c7785e4b0f8105b3193/FLAG7c4b467e0 [2020-04-18 02:29:51,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9f6ee5/b072eed7f4d84c7785e4b0f8105b3193 [2020-04-18 02:29:51,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:29:51,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:29:51,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:29:51,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:29:51,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:29:51,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:29:51" (1/1) ... [2020-04-18 02:29:51,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:51, skipping insertion in model container [2020-04-18 02:29:51,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:29:51" (1/1) ... [2020-04-18 02:29:51,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:29:51,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:29:52,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:29:52,339 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:29:52,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:29:52,453 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:29:52,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52 WrapperNode [2020-04-18 02:29:52,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:29:52,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:29:52,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:29:52,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:29:52,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:29:52,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:29:52,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:29:52,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:29:52,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (1/1) ... [2020-04-18 02:29:52,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:29:52,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:29:52,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:29:52,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:29:52,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (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 02:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:29:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:29:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:29:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:29:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:29:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:29:52,614 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 02:29:52,990 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:29:52,990 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:29:52,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:29:52 BoogieIcfgContainer [2020-04-18 02:29:52,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:29:52,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:29:52,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:29:52,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:29:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:29:51" (1/3) ... [2020-04-18 02:29:53,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa893eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:29:53, skipping insertion in model container [2020-04-18 02:29:53,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:29:52" (2/3) ... [2020-04-18 02:29:53,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa893eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:29:53, skipping insertion in model container [2020-04-18 02:29:53,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:29:52" (3/3) ... [2020-04-18 02:29:53,003 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-04-18 02:29:53,014 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:29:53,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:29:53,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:29:53,022 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:29:53,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,049 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,050 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,051 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,051 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,052 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,052 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,052 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,053 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,055 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,055 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,056 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,056 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,056 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,064 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,065 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,065 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,066 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,072 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,073 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,073 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,073 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,076 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,077 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,077 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,077 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:29:53,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:29:53,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:29:53,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:29:53,109 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:29:53,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:29:53,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:29:53,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:29:53,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:29:53,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:29:53,123 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 02:29:53,125 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 02:29:53,169 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 02:29:53,169 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:29:53,174 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:29:53,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 02:29:53,198 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 02:29:53,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:29:53,199 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:29:53,201 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 02:29:53,202 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:29:54,503 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-18 02:29:54,503 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 02:29:54,507 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:29:54,531 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-18 02:29:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-18 02:29:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:29:54,539 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:54,540 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:54,540 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-18 02:29:54,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:54,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706641040] [2020-04-18 02:29:54,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:54,775 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 02:29:54,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706641040] [2020-04-18 02:29:54,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:54,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:29:54,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686115479] [2020-04-18 02:29:54,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:29:54,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:54,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:29:54,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:29:54,810 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-18 02:29:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:54,861 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-18 02:29:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:29:54,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:29:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:54,897 INFO L225 Difference]: With dead ends: 274 [2020-04-18 02:29:54,897 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 02:29:54,906 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:29:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 02:29:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 02:29:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 02:29:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-18 02:29:54,996 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-18 02:29:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:54,997 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-18 02:29:54,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:29:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-18 02:29:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:29:55,000 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,000 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-18 02:29:55,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172151790] [2020-04-18 02:29:55,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,185 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 02:29:55,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172151790] [2020-04-18 02:29:55,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:29:55,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957116594] [2020-04-18 02:29:55,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:29:55,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:29:55,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:29:55,189 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-18 02:29:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,232 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 02:29:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:29:55,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:29:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,236 INFO L225 Difference]: With dead ends: 250 [2020-04-18 02:29:55,236 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:29:55,240 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 02:29:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:29:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:29:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:29:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-18 02:29:55,263 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-18 02:29:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,263 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-18 02:29:55,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:29:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-18 02:29:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:29:55,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-18 02:29:55,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482821227] [2020-04-18 02:29:55,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,370 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 02:29:55,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482821227] [2020-04-18 02:29:55,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:29:55,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506747153] [2020-04-18 02:29:55,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:29:55,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:29:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:29:55,374 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-04-18 02:29:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,439 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-04-18 02:29:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:29:55,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:29:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,441 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:29:55,441 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 02:29:55,442 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:29:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 02:29:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 02:29:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 02:29:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-04-18 02:29:55,451 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-04-18 02:29:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,451 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-04-18 02:29:55,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:29:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-04-18 02:29:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:29:55,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,453 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,453 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-04-18 02:29:55,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767719671] [2020-04-18 02:29:55,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,499 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 02:29:55,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767719671] [2020-04-18 02:29:55,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:29:55,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990697074] [2020-04-18 02:29:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:29:55,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:29:55,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:29:55,502 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-04-18 02:29:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,525 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-04-18 02:29:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:29:55,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:29:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,527 INFO L225 Difference]: With dead ends: 174 [2020-04-18 02:29:55,527 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 02:29:55,528 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 02:29:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 02:29:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 02:29:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 02:29:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-18 02:29:55,535 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-18 02:29:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,536 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-18 02:29:55,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:29:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-18 02:29:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:29:55,537 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,538 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-18 02:29:55,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478475724] [2020-04-18 02:29:55,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,618 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 02:29:55,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478475724] [2020-04-18 02:29:55,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:29:55,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446684342] [2020-04-18 02:29:55,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:29:55,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:29:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:29:55,624 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-04-18 02:29:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,663 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-18 02:29:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:29:55,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:29:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,666 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:29:55,666 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 02:29:55,666 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 02:29:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 02:29:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 02:29:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 02:29:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-18 02:29:55,672 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-18 02:29:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,672 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-18 02:29:55,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:29:55,672 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-18 02:29:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:29:55,673 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,674 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-18 02:29:55,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984056770] [2020-04-18 02:29:55,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,730 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 02:29:55,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984056770] [2020-04-18 02:29:55,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:29:55,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717799800] [2020-04-18 02:29:55,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:29:55,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:29:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:29:55,734 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-04-18 02:29:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,811 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-18 02:29:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:29:55,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:29:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,814 INFO L225 Difference]: With dead ends: 116 [2020-04-18 02:29:55,814 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 02:29:55,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:29:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 02:29:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 02:29:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 02:29:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-18 02:29:55,819 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-18 02:29:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,819 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-18 02:29:55,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:29:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-18 02:29:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:29:55,821 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,821 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-18 02:29:55,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557497517] [2020-04-18 02:29:55,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:55,917 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 02:29:55,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557497517] [2020-04-18 02:29:55,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:55,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:29:55,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611508877] [2020-04-18 02:29:55,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:29:55,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:29:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:29:55,919 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-04-18 02:29:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:55,948 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-18 02:29:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:29:55,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:29:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:55,951 INFO L225 Difference]: With dead ends: 120 [2020-04-18 02:29:55,951 INFO L226 Difference]: Without dead ends: 94 [2020-04-18 02:29:55,952 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:29:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-18 02:29:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-18 02:29:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-18 02:29:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-18 02:29:55,956 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-18 02:29:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:55,957 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-18 02:29:55,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:29:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-18 02:29:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:29:55,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:55,958 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:55,958 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-18 02:29:55,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566591599] [2020-04-18 02:29:55,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:29:56,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566591599] [2020-04-18 02:29:56,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:56,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:29:56,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520609279] [2020-04-18 02:29:56,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:29:56,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:56,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:29:56,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:29:56,052 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-04-18 02:29:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:56,094 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-04-18 02:29:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:29:56,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:29:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:56,096 INFO L225 Difference]: With dead ends: 113 [2020-04-18 02:29:56,096 INFO L226 Difference]: Without dead ends: 70 [2020-04-18 02:29:56,097 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:29:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-18 02:29:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-04-18 02:29:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:29:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-04-18 02:29:56,101 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-04-18 02:29:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:56,101 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-04-18 02:29:56,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:29:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-04-18 02:29:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:29:56,108 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:29:56,108 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:29:56,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:29:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:29:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-04-18 02:29:56,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:29:56,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281816036] [2020-04-18 02:29:56,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:29:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:29:56,234 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 02:29:56,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281816036] [2020-04-18 02:29:56,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:29:56,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:29:56,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043159537] [2020-04-18 02:29:56,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:29:56,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:29:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:29:56,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:29:56,241 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-04-18 02:29:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:29:56,287 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-18 02:29:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:29:56,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:29:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:29:56,287 INFO L225 Difference]: With dead ends: 58 [2020-04-18 02:29:56,287 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:29:56,288 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 02:29:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:29:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:29:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:29:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:29:56,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:29:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:29:56,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:29:56,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:29:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:29:56,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:29:56,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:29:56 BasicIcfg [2020-04-18 02:29:56,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:29:56,300 INFO L168 Benchmark]: Toolchain (without parser) took 4555.96 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 99.3 MB in the beginning and 210.4 MB in the end (delta: -111.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:29:56,301 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:29:56,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.61 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.5 MB in the beginning and 158.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:29:56,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.21 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:29:56,311 INFO L168 Benchmark]: Boogie Preprocessor took 28.27 ms. Allocated memory is still 201.3 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:29:56,312 INFO L168 Benchmark]: RCFGBuilder took 447.75 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 132.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:29:56,313 INFO L168 Benchmark]: TraceAbstraction took 3300.13 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 210.4 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:29:56,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.61 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.5 MB in the beginning and 158.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.21 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.27 ms. Allocated memory is still 201.3 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.75 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 132.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3300.13 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 210.4 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 188 SDtfs, 171 SDslu, 276 SDs, 0 SdLazy, 115 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3462 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...