/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/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c1f4b5c [2019-12-17 10:56:00,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-17 10:56:00,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-17 10:56:00,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-17 10:56:00,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-17 10:56:00,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-17 10:56:00,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-17 10:56:00,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-17 10:56:00,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-17 10:56:00,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-17 10:56:00,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-17 10:56:00,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-17 10:56:00,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-17 10:56:00,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-17 10:56:00,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-17 10:56:00,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-17 10:56:00,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-17 10:56:00,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-17 10:56:00,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-17 10:56:00,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-17 10:56:00,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-17 10:56:00,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-17 10:56:00,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-17 10:56:00,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-17 10:56:00,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-17 10:56:00,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-17 10:56:00,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-17 10:56:00,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-17 10:56:00,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-17 10:56:00,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-17 10:56:00,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-17 10:56:00,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-17 10:56:00,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-17 10:56:00,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-17 10:56:00,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-17 10:56:00,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-17 10:56:00,755 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 [2019-12-17 10:56:00,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-17 10:56:00,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-17 10:56:00,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-17 10:56:00,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-17 10:56:00,780 INFO L138 SettingsManager]: * Use SBE=true [2019-12-17 10:56:00,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-17 10:56:00,780 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-17 10:56:00,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-17 10:56:00,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-17 10:56:00,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-17 10:56:00,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-17 10:56:00,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-17 10:56:00,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-17 10:56:00,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-17 10:56:00,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-17 10:56:00,784 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-17 10:56:00,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-17 10:56:00,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-17 10:56:00,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-17 10:56:00,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-17 10:56:00,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-17 10:56:00,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-17 10:56:00,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-17 10:56:00,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-17 10:56:00,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-17 10:56:00,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-17 10:56:00,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-17 10:56:00,786 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-17 10:56:00,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=FINITE_AUTOMATA [2019-12-17 10:56:00,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-17 10:56:00,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-17 10:56:01,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-17 10:56:01,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-17 10:56:01,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-17 10:56:01,150 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-17 10:56:01,151 INFO L275 PluginConnector]: CDTParser initialized [2019-12-17 10:56:01,152 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2019-12-17 10:56:01,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa13f8c/6a911c1d04b24ec493ca4b29948b7056/FLAG19951a538 [2019-12-17 10:56:01,669 INFO L306 CDTParser]: Found 1 translation units. [2019-12-17 10:56:01,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2019-12-17 10:56:01,670 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:56:01,670 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:56:01,670 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:56:01,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa13f8c/6a911c1d04b24ec493ca4b29948b7056/FLAG19951a538 [2019-12-17 10:56:02,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa13f8c/6a911c1d04b24ec493ca4b29948b7056 [2019-12-17 10:56:02,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-17 10:56:02,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-17 10:56:02,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-17 10:56:02,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-17 10:56:02,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-17 10:56:02,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5638fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02, skipping insertion in model container [2019-12-17 10:56:02,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-17 10:56:02,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-17 10:56:02,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:56:02,461 INFO L203 MainTranslator]: Completed pre-run [2019-12-17 10:56:02,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:56:02,490 INFO L208 MainTranslator]: Completed translation [2019-12-17 10:56:02,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02 WrapperNode [2019-12-17 10:56:02,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-17 10:56:02,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-17 10:56:02,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-17 10:56:02,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-17 10:56:02,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-17 10:56:02,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-17 10:56:02,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-17 10:56:02,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-17 10:56:02,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (1/1) ... [2019-12-17 10:56:02,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-17 10:56:02,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-17 10:56:02,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-17 10:56:02,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-17 10:56:02,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (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 [2019-12-17 10:56:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-17 10:56:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-17 10:56:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-17 10:56:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-17 10:56:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2019-12-17 10:56:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2019-12-17 10:56:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2019-12-17 10:56:02,617 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2019-12-17 10:56:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-17 10:56:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-17 10:56:02,618 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-17 10:56:02,917 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-17 10:56:02,917 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-17 10:56:02,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:56:02 BoogieIcfgContainer [2019-12-17 10:56:02,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-17 10:56:02,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-17 10:56:02,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-17 10:56:02,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-17 10:56:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:56:02" (1/3) ... [2019-12-17 10:56:02,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359b4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:56:02, skipping insertion in model container [2019-12-17 10:56:02,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:56:02" (2/3) ... [2019-12-17 10:56:02,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359b4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:56:02, skipping insertion in model container [2019-12-17 10:56:02,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:56:02" (3/3) ... [2019-12-17 10:56:02,928 INFO L109 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2019-12-17 10:56:02,939 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-17 10:56:02,939 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-17 10:56:02,945 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-17 10:56:02,946 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-17 10:56:02,999 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,000 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,000 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,002 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,002 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,003 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,003 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,003 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,003 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,004 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,004 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,004 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,007 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,008 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,010 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,010 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,011 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,011 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,011 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,011 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,012 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,012 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,017 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,017 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,017 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,018 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,018 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,023 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,024 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,024 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,024 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,024 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:56:03,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-17 10:56:03,065 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-17 10:56:03,065 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-17 10:56:03,065 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-17 10:56:03,065 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-17 10:56:03,065 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-17 10:56:03,065 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-17 10:56:03,066 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-17 10:56:03,066 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-17 10:56:03,080 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions [2019-12-17 10:56:03,082 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions [2019-12-17 10:56:03,139 INFO L130 PetriNetUnfolder]: 5/56 cut-off events. [2019-12-17 10:56:03,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-17 10:56:03,148 INFO L76 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs. 19/70 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2019-12-17 10:56:03,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions [2019-12-17 10:56:03,197 INFO L130 PetriNetUnfolder]: 5/56 cut-off events. [2019-12-17 10:56:03,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-17 10:56:03,198 INFO L76 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs. 19/70 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2019-12-17 10:56:03,200 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 528 [2019-12-17 10:56:03,202 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-17 10:56:03,956 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-17 10:56:04,009 INFO L206 etLargeBlockEncoding]: Checked pairs total: 464 [2019-12-17 10:56:04,009 INFO L214 etLargeBlockEncoding]: Total number of compositions: 32 [2019-12-17 10:56:04,013 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 24 transitions [2019-12-17 10:56:04,036 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2019-12-17 10:56:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2019-12-17 10:56:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-17 10:56:04,046 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:04,047 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:04,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1407545813, now seen corresponding path program 1 times [2019-12-17 10:56:04,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:04,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800668666] [2019-12-17 10:56:04,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:04,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800668666] [2019-12-17 10:56:04,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:56:04,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-17 10:56:04,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999635226] [2019-12-17 10:56:04,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-17 10:56:04,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-17 10:56:04,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:56:04,339 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2019-12-17 10:56:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:04,390 INFO L93 Difference]: Finished difference Result 92 states and 203 transitions. [2019-12-17 10:56:04,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-17 10:56:04,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-12-17 10:56:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:04,426 INFO L225 Difference]: With dead ends: 92 [2019-12-17 10:56:04,426 INFO L226 Difference]: Without dead ends: 91 [2019-12-17 10:56:04,429 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:56:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-12-17 10:56:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2019-12-17 10:56:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-17 10:56:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2019-12-17 10:56:04,481 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 15 [2019-12-17 10:56:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:04,482 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2019-12-17 10:56:04,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-17 10:56:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2019-12-17 10:56:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-17 10:56:04,484 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:04,484 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:04,484 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1903898904, now seen corresponding path program 1 times [2019-12-17 10:56:04,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:04,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284612265] [2019-12-17 10:56:04,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:56:04,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284612265] [2019-12-17 10:56:04,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:56:04,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-17 10:56:04,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713793534] [2019-12-17 10:56:04,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-17 10:56:04,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-17 10:56:04,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:56:04,565 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 3 states. [2019-12-17 10:56:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:04,594 INFO L93 Difference]: Finished difference Result 110 states and 246 transitions. [2019-12-17 10:56:04,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-17 10:56:04,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-17 10:56:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:04,600 INFO L225 Difference]: With dead ends: 110 [2019-12-17 10:56:04,600 INFO L226 Difference]: Without dead ends: 110 [2019-12-17 10:56:04,603 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:56:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-12-17 10:56:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2019-12-17 10:56:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-12-17 10:56:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 211 transitions. [2019-12-17 10:56:04,626 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 211 transitions. Word has length 17 [2019-12-17 10:56:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:04,626 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 211 transitions. [2019-12-17 10:56:04,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-17 10:56:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 211 transitions. [2019-12-17 10:56:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-17 10:56:04,628 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:04,628 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:04,629 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:04,629 INFO L82 PathProgramCache]: Analyzing trace with hash -799047686, now seen corresponding path program 1 times [2019-12-17 10:56:04,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:04,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232513634] [2019-12-17 10:56:04,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:56:04,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232513634] [2019-12-17 10:56:04,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761627825] [2019-12-17 10:56:04,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:04,795 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-17 10:56:04,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:56:04,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:04,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-12-17 10:56:04,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551673789] [2019-12-17 10:56:04,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-17 10:56:04,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:04,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-17 10:56:04,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-17 10:56:04,855 INFO L87 Difference]: Start difference. First operand 95 states and 211 transitions. Second operand 7 states. [2019-12-17 10:56:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:05,083 INFO L93 Difference]: Finished difference Result 140 states and 315 transitions. [2019-12-17 10:56:05,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-17 10:56:05,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-17 10:56:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:05,086 INFO L225 Difference]: With dead ends: 140 [2019-12-17 10:56:05,088 INFO L226 Difference]: Without dead ends: 116 [2019-12-17 10:56:05,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-12-17 10:56:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-12-17 10:56:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2019-12-17 10:56:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-12-17 10:56:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2019-12-17 10:56:05,105 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 19 [2019-12-17 10:56:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:05,105 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2019-12-17 10:56:05,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-17 10:56:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2019-12-17 10:56:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-17 10:56:05,107 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:05,107 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:05,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:05,314 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1459730780, now seen corresponding path program 1 times [2019-12-17 10:56:05,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:05,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880806614] [2019-12-17 10:56:05,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:05,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880806614] [2019-12-17 10:56:05,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:56:05,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-17 10:56:05,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892180206] [2019-12-17 10:56:05,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-17 10:56:05,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:05,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-17 10:56:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-17 10:56:05,467 INFO L87 Difference]: Start difference. First operand 104 states and 238 transitions. Second operand 9 states. [2019-12-17 10:56:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:05,688 INFO L93 Difference]: Finished difference Result 257 states and 588 transitions. [2019-12-17 10:56:05,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-17 10:56:05,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-12-17 10:56:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:05,691 INFO L225 Difference]: With dead ends: 257 [2019-12-17 10:56:05,691 INFO L226 Difference]: Without dead ends: 147 [2019-12-17 10:56:05,692 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2019-12-17 10:56:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-12-17 10:56:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98. [2019-12-17 10:56:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-12-17 10:56:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 224 transitions. [2019-12-17 10:56:05,702 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 224 transitions. Word has length 21 [2019-12-17 10:56:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:05,703 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 224 transitions. [2019-12-17 10:56:05,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-17 10:56:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 224 transitions. [2019-12-17 10:56:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-17 10:56:05,705 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:05,705 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:05,705 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash -925974656, now seen corresponding path program 2 times [2019-12-17 10:56:05,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:05,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307947361] [2019-12-17 10:56:05,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:05,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307947361] [2019-12-17 10:56:05,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341394969] [2019-12-17 10:56:05,822 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:05,873 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-17 10:56:05,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:56:05,875 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-17 10:56:05,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:05,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:05,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-12-17 10:56:05,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076659276] [2019-12-17 10:56:05,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-17 10:56:05,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:05,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-17 10:56:05,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-17 10:56:05,923 INFO L87 Difference]: Start difference. First operand 98 states and 224 transitions. Second operand 10 states. [2019-12-17 10:56:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:06,286 INFO L93 Difference]: Finished difference Result 298 states and 685 transitions. [2019-12-17 10:56:06,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-17 10:56:06,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-12-17 10:56:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:06,289 INFO L225 Difference]: With dead ends: 298 [2019-12-17 10:56:06,289 INFO L226 Difference]: Without dead ends: 276 [2019-12-17 10:56:06,289 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2019-12-17 10:56:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-12-17 10:56:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 147. [2019-12-17 10:56:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-12-17 10:56:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 351 transitions. [2019-12-17 10:56:06,318 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 351 transitions. Word has length 21 [2019-12-17 10:56:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:06,318 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 351 transitions. [2019-12-17 10:56:06,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-17 10:56:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 351 transitions. [2019-12-17 10:56:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-17 10:56:06,323 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:06,323 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:06,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:06,527 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:06,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2098130642, now seen corresponding path program 3 times [2019-12-17 10:56:06,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:06,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940673954] [2019-12-17 10:56:06,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:06,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940673954] [2019-12-17 10:56:06,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437338681] [2019-12-17 10:56:06,625 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:06,676 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-17 10:56:06,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:56:06,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-17 10:56:06,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:06,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:06,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2019-12-17 10:56:06,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186144259] [2019-12-17 10:56:06,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-17 10:56:06,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-17 10:56:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-12-17 10:56:06,739 INFO L87 Difference]: Start difference. First operand 147 states and 351 transitions. Second operand 13 states. [2019-12-17 10:56:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:07,289 INFO L93 Difference]: Finished difference Result 351 states and 817 transitions. [2019-12-17 10:56:07,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-17 10:56:07,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-12-17 10:56:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:07,292 INFO L225 Difference]: With dead ends: 351 [2019-12-17 10:56:07,292 INFO L226 Difference]: Without dead ends: 193 [2019-12-17 10:56:07,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2019-12-17 10:56:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-12-17 10:56:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 124. [2019-12-17 10:56:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-12-17 10:56:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 285 transitions. [2019-12-17 10:56:07,299 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 285 transitions. Word has length 23 [2019-12-17 10:56:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:07,300 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 285 transitions. [2019-12-17 10:56:07,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-17 10:56:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 285 transitions. [2019-12-17 10:56:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-17 10:56:07,301 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:07,301 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:07,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:07,512 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:07,513 INFO L82 PathProgramCache]: Analyzing trace with hash 717660324, now seen corresponding path program 4 times [2019-12-17 10:56:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:07,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485838627] [2019-12-17 10:56:07,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:07,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485838627] [2019-12-17 10:56:07,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071715413] [2019-12-17 10:56:07,578 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:07,618 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-17 10:56:07,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:56:07,619 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-17 10:56:07,621 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:56:07,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:07,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-17 10:56:07,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576368781] [2019-12-17 10:56:07,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-17 10:56:07,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-17 10:56:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-17 10:56:07,636 INFO L87 Difference]: Start difference. First operand 124 states and 285 transitions. Second operand 8 states. [2019-12-17 10:56:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:07,659 INFO L93 Difference]: Finished difference Result 142 states and 328 transitions. [2019-12-17 10:56:07,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-17 10:56:07,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-12-17 10:56:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:07,662 INFO L225 Difference]: With dead ends: 142 [2019-12-17 10:56:07,662 INFO L226 Difference]: Without dead ends: 142 [2019-12-17 10:56:07,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-17 10:56:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-12-17 10:56:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-12-17 10:56:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-12-17 10:56:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 328 transitions. [2019-12-17 10:56:07,670 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 328 transitions. Word has length 25 [2019-12-17 10:56:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:07,670 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 328 transitions. [2019-12-17 10:56:07,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-17 10:56:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 328 transitions. [2019-12-17 10:56:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-17 10:56:07,675 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:07,675 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:07,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:07,876 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1554416694, now seen corresponding path program 5 times [2019-12-17 10:56:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:07,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069304370] [2019-12-17 10:56:07,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:56:07,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069304370] [2019-12-17 10:56:07,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562618623] [2019-12-17 10:56:07,937 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:07,981 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-17 10:56:07,981 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:56:07,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-17 10:56:07,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:56:07,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:07,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-17 10:56:07,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253795628] [2019-12-17 10:56:07,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-17 10:56:07,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-17 10:56:07,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-17 10:56:07,992 INFO L87 Difference]: Start difference. First operand 142 states and 328 transitions. Second operand 5 states. [2019-12-17 10:56:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:08,019 INFO L93 Difference]: Finished difference Result 257 states and 601 transitions. [2019-12-17 10:56:08,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-17 10:56:08,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-12-17 10:56:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:08,021 INFO L225 Difference]: With dead ends: 257 [2019-12-17 10:56:08,022 INFO L226 Difference]: Without dead ends: 257 [2019-12-17 10:56:08,022 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-17 10:56:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-12-17 10:56:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 198. [2019-12-17 10:56:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-12-17 10:56:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 463 transitions. [2019-12-17 10:56:08,029 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 463 transitions. Word has length 27 [2019-12-17 10:56:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:08,029 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 463 transitions. [2019-12-17 10:56:08,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-17 10:56:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 463 transitions. [2019-12-17 10:56:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-17 10:56:08,031 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:08,031 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:08,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:08,237 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:08,238 INFO L82 PathProgramCache]: Analyzing trace with hash -652689143, now seen corresponding path program 6 times [2019-12-17 10:56:08,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:08,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435659678] [2019-12-17 10:56:08,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:56:08,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435659678] [2019-12-17 10:56:08,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408693629] [2019-12-17 10:56:08,328 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:08,376 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-17 10:56:08,376 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:56:08,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-17 10:56:08,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:56:08,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:08,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-12-17 10:56:08,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587059265] [2019-12-17 10:56:08,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-17 10:56:08,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-17 10:56:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-12-17 10:56:08,439 INFO L87 Difference]: Start difference. First operand 198 states and 463 transitions. Second operand 10 states. [2019-12-17 10:56:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:08,667 INFO L93 Difference]: Finished difference Result 673 states and 1603 transitions. [2019-12-17 10:56:08,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-17 10:56:08,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-12-17 10:56:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:08,671 INFO L225 Difference]: With dead ends: 673 [2019-12-17 10:56:08,671 INFO L226 Difference]: Without dead ends: 616 [2019-12-17 10:56:08,672 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-12-17 10:56:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-12-17 10:56:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 345. [2019-12-17 10:56:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-12-17 10:56:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 837 transitions. [2019-12-17 10:56:08,685 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 837 transitions. Word has length 29 [2019-12-17 10:56:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:08,685 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 837 transitions. [2019-12-17 10:56:08,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-17 10:56:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 837 transitions. [2019-12-17 10:56:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-17 10:56:08,687 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:56:08,687 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:56:08,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:08,891 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:56:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:56:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1968192520, now seen corresponding path program 7 times [2019-12-17 10:56:08,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:56:08,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592747891] [2019-12-17 10:56:08,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:56:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-17 10:56:08,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592747891] [2019-12-17 10:56:08,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699915953] [2019-12-17 10:56:08,976 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:56:09,019 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-17 10:56:09,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:56:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-17 10:56:09,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:56:09,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-17 10:56:09,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689202997] [2019-12-17 10:56:09,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-17 10:56:09,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:56:09,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-17 10:56:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-12-17 10:56:09,094 INFO L87 Difference]: Start difference. First operand 345 states and 837 transitions. Second operand 15 states. [2019-12-17 10:56:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:56:09,775 INFO L93 Difference]: Finished difference Result 1161 states and 2797 transitions. [2019-12-17 10:56:09,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-17 10:56:09,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2019-12-17 10:56:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:56:09,776 INFO L225 Difference]: With dead ends: 1161 [2019-12-17 10:56:09,776 INFO L226 Difference]: Without dead ends: 0 [2019-12-17 10:56:09,777 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=571, Invalid=1685, Unknown=0, NotChecked=0, Total=2256 [2019-12-17 10:56:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-17 10:56:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-17 10:56:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-17 10:56:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-17 10:56:09,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-12-17 10:56:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:56:09,779 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-17 10:56:09,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-17 10:56:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-17 10:56:09,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-17 10:56:09,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:56:09,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:56:09 BasicIcfg [2019-12-17 10:56:09,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-17 10:56:09,993 INFO L168 Benchmark]: Toolchain (without parser) took 7887.45 ms. Allocated memory was 140.0 MB in the beginning and 279.4 MB in the end (delta: 139.5 MB). Free memory was 100.4 MB in the beginning and 93.2 MB in the end (delta: 7.1 MB). Peak memory consumption was 146.6 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:09,994 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-17 10:56:09,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.71 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 99.9 MB in the beginning and 178.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:09,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.79 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 177.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:09,997 INFO L168 Benchmark]: Boogie Preprocessor took 23.38 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 175.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:10,001 INFO L168 Benchmark]: RCFGBuilder took 365.77 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 159.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:10,002 INFO L168 Benchmark]: TraceAbstraction took 7069.52 ms. Allocated memory was 201.3 MB in the beginning and 279.4 MB in the end (delta: 78.1 MB). Free memory was 158.8 MB in the beginning and 93.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 143.6 MB. Max. memory is 7.1 GB. [2019-12-17 10:56:10,008 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.71 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 99.9 MB in the beginning and 178.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.79 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 177.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.38 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 175.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.77 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 159.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7069.52 ms. Allocated memory was 201.3 MB in the beginning and 279.4 MB in the end (delta: 78.1 MB). Free memory was 158.8 MB in the beginning and 93.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 143.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 57 ProgramPointsBefore, 26 ProgramPointsAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 233 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 464 CheckedPairsTotal, 32 TotalNumberOfCompositions - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Result: SAFE, OverallTime: 6.9s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 347 SDtfs, 1251 SDslu, 910 SDs, 0 SdLazy, 658 SolverSat, 375 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=9, 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, 10 MinimizatonAttempts, 615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 403 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 22934 SizeOfPredicates, 7 NumberOfNonLiveVariables, 544 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 155/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...