/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:46:06,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:46:06,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:46:06,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:46:06,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:46:06,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:46:06,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:46:06,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:46:06,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:46:06,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:46:06,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:46:06,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:46:06,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:46:06,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:46:06,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:46:06,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:46:06,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:46:06,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:46:06,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:46:06,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:46:06,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:46:06,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:46:06,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:46:06,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:46:06,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:46:06,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:46:06,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:46:06,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:46:06,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:46:06,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:46:06,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:46:06,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:46:06,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:46:06,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:46:06,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:46:06,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:46:06,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:46:06,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:46:06,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:46:06,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:46:06,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:46:06,928 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:46:06,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:46:06,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:46:06,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:46:06,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:46:06,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:46:06,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:46:06,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:46:06,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:46:06,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:46:06,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:46:06,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:46:06,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:46:06,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:46:06,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:46:06,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:46:06,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:46:06,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:46:06,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:46:06,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:46:06,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:46:07,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:46:07,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:46:07,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:46:07,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:46:07,359 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:46:07,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-09 12:46:07,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345478584/1bccf8a54f014b63b4762c4642812e62/FLAGdf770c5e1 [2020-11-09 12:46:08,241 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:46:08,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-09 12:46:08,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345478584/1bccf8a54f014b63b4762c4642812e62/FLAGdf770c5e1 [2020-11-09 12:46:08,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345478584/1bccf8a54f014b63b4762c4642812e62 [2020-11-09 12:46:08,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:46:08,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:46:08,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:46:08,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:46:08,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:46:08,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:46:08" (1/1) ... [2020-11-09 12:46:08,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438e99ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:08, skipping insertion in model container [2020-11-09 12:46:08,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:46:08" (1/1) ... [2020-11-09 12:46:08,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:46:08,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:46:09,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:46:09,091 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:46:09,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:46:09,290 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:46:09,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09 WrapperNode [2020-11-09 12:46:09,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:46:09,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:46:09,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:46:09,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:46:09,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:46:09,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:46:09,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:46:09,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:46:09,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (1/1) ... [2020-11-09 12:46:09,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:46:09,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:46:09,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:46:09,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:46:09,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (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 [2020-11-09 12:46:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:46:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:46:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:46:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:46:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:46:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:46:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:46:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:46:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:46:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:46:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:46:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:46:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:46:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:46:09,456 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:46:09,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:46:09,919 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:46:09,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:46:09 BoogieIcfgContainer [2020-11-09 12:46:09,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:46:09,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:46:09,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:46:09,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:46:09,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:46:08" (1/3) ... [2020-11-09 12:46:09,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162f0b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:46:09, skipping insertion in model container [2020-11-09 12:46:09,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:46:09" (2/3) ... [2020-11-09 12:46:09,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162f0b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:46:09, skipping insertion in model container [2020-11-09 12:46:09,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:46:09" (3/3) ... [2020-11-09 12:46:09,931 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-11-09 12:46:09,947 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:46:09,947 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:46:09,951 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:46:09,952 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:46:09,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,988 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,988 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,988 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,988 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,990 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,990 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,991 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,991 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,991 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,991 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,991 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,992 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:09,998 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,005 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,006 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,006 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,009 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,009 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:46:10,012 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:46:10,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:46:10,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:46:10,048 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:46:10,048 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:46:10,048 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:46:10,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:46:10,049 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:46:10,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:46:10,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:46:10,061 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:46:10,064 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:46:10,067 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:46:10,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:46:10,128 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:46:10,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:46:10,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:46:10,141 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:46:10,644 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-09 12:46:14,173 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-09 12:46:14,379 WARN L194 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-09 12:46:14,544 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:46:14,749 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:46:15,305 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 12:46:15,636 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 12:46:15,741 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-09 12:46:15,742 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 12:46:15,751 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:46:15,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:46:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:46:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:46:15,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:15,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:15,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:15,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-09 12:46:15,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:15,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573437921] [2020-11-09 12:46:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:16,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573437921] [2020-11-09 12:46:16,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:16,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:46:16,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352788542] [2020-11-09 12:46:16,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:46:16,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:46:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,086 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:46:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:16,148 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 12:46:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:46:16,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:46:16,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:16,168 INFO L225 Difference]: With dead ends: 282 [2020-11-09 12:46:16,168 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:46:16,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:46:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:46:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:46:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 12:46:16,258 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 12:46:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:16,259 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 12:46:16,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:46:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 12:46:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:46:16,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:16,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:46:16,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:16,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1794997166, now seen corresponding path program 1 times [2020-11-09 12:46:16,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:16,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898258563] [2020-11-09 12:46:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:16,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898258563] [2020-11-09 12:46:16,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:16,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:16,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353326040] [2020-11-09 12:46:16,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:16,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:16,388 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 12:46:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:16,440 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-11-09 12:46:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:46:16,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:46:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:16,444 INFO L225 Difference]: With dead ends: 278 [2020-11-09 12:46:16,444 INFO L226 Difference]: Without dead ends: 182 [2020-11-09 12:46:16,445 INFO L677 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 [2020-11-09 12:46:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-09 12:46:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-09 12:46:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-09 12:46:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-11-09 12:46:16,463 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-11-09 12:46:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:16,464 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-11-09 12:46:16,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-11-09 12:46:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:46:16,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:16,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:16,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:46:16,466 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -918467642, now seen corresponding path program 1 times [2020-11-09 12:46:16,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:16,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617325128] [2020-11-09 12:46:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:16,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617325128] [2020-11-09 12:46:16,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:16,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:16,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22640416] [2020-11-09 12:46:16,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:16,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:16,587 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-11-09 12:46:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:16,659 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-11-09 12:46:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:16,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 12:46:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:16,662 INFO L225 Difference]: With dead ends: 218 [2020-11-09 12:46:16,662 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:46:16,663 INFO L677 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 [2020-11-09 12:46:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:46:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:46:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:46:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 12:46:16,676 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-11-09 12:46:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:16,677 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 12:46:16,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 12:46:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:46:16,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:16,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:16,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:46:16,679 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 1 times [2020-11-09 12:46:16,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:16,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930917846] [2020-11-09 12:46:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:16,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930917846] [2020-11-09 12:46:16,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:16,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:46:16,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702353425] [2020-11-09 12:46:16,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:46:16,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:16,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:46:16,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,741 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 12:46:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:16,765 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-09 12:46:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:46:16,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 12:46:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:16,768 INFO L225 Difference]: With dead ends: 144 [2020-11-09 12:46:16,768 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 12:46:16,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 12:46:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 12:46:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 12:46:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-09 12:46:16,783 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-09 12:46:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:16,783 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-09 12:46:16,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:46:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-09 12:46:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:46:16,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:16,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:16,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:46:16,790 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-11-09 12:46:16,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:16,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538313340] [2020-11-09 12:46:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538313340] [2020-11-09 12:46:16,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:16,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:16,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105497612] [2020-11-09 12:46:16,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:46:16,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:16,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:46:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,885 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 3 states. [2020-11-09 12:46:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:16,905 INFO L93 Difference]: Finished difference Result 176 states and 415 transitions. [2020-11-09 12:46:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:46:16,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 12:46:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:16,908 INFO L225 Difference]: With dead ends: 176 [2020-11-09 12:46:16,908 INFO L226 Difference]: Without dead ends: 152 [2020-11-09 12:46:16,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:46:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-09 12:46:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2020-11-09 12:46:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-09 12:46:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 331 transitions. [2020-11-09 12:46:16,919 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 331 transitions. Word has length 12 [2020-11-09 12:46:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:16,919 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 331 transitions. [2020-11-09 12:46:16,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:46:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 331 transitions. [2020-11-09 12:46:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:46:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:16,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:16,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:46:16,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-11-09 12:46:16,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:16,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669600115] [2020-11-09 12:46:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:17,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669600115] [2020-11-09 12:46:17,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:17,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:17,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107109782] [2020-11-09 12:46:17,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:17,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:17,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:17,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:17,078 INFO L87 Difference]: Start difference. First operand 140 states and 331 transitions. Second operand 4 states. [2020-11-09 12:46:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:17,132 INFO L93 Difference]: Finished difference Result 161 states and 350 transitions. [2020-11-09 12:46:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:17,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:46:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:17,134 INFO L225 Difference]: With dead ends: 161 [2020-11-09 12:46:17,134 INFO L226 Difference]: Without dead ends: 121 [2020-11-09 12:46:17,135 INFO L677 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 [2020-11-09 12:46:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-09 12:46:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-11-09 12:46:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-09 12:46:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 263 transitions. [2020-11-09 12:46:17,141 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 263 transitions. Word has length 12 [2020-11-09 12:46:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:17,141 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 263 transitions. [2020-11-09 12:46:17,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 263 transitions. [2020-11-09 12:46:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:46:17,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:17,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:17,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:46:17,144 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-11-09 12:46:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:17,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729006011] [2020-11-09 12:46:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:17,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729006011] [2020-11-09 12:46:17,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:17,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:17,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471348874] [2020-11-09 12:46:17,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:17,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:17,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:17,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:17,248 INFO L87 Difference]: Start difference. First operand 121 states and 263 transitions. Second operand 5 states. [2020-11-09 12:46:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:17,333 INFO L93 Difference]: Finished difference Result 121 states and 245 transitions. [2020-11-09 12:46:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:46:17,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:46:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:17,335 INFO L225 Difference]: With dead ends: 121 [2020-11-09 12:46:17,335 INFO L226 Difference]: Without dead ends: 96 [2020-11-09 12:46:17,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:46:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-09 12:46:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-11-09 12:46:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-09 12:46:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-09 12:46:17,340 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 13 [2020-11-09 12:46:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:17,341 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-09 12:46:17,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-09 12:46:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:46:17,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:17,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:17,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:46:17,342 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:17,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-09 12:46:17,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:17,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268126492] [2020-11-09 12:46:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:17,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268126492] [2020-11-09 12:46:17,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:17,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:46:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754605954] [2020-11-09 12:46:17,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:46:17,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:17,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:46:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:46:17,450 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-09 12:46:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:17,534 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-09 12:46:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:46:17,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:46:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:17,536 INFO L225 Difference]: With dead ends: 92 [2020-11-09 12:46:17,536 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:46:17,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:46:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:46:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:46:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:46:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-09 12:46:17,538 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-09 12:46:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:17,538 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-09 12:46:17,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:46:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-09 12:46:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:46:17,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:17,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:17,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:46:17,540 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-09 12:46:17,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:17,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004482946] [2020-11-09 12:46:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:17,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004482946] [2020-11-09 12:46:17,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:17,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:17,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956281592] [2020-11-09 12:46:17,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:17,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:17,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:17,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:17,586 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-09 12:46:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:17,610 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-09 12:46:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:46:17,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:46:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:17,611 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:46:17,611 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:46:17,611 INFO L677 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 [2020-11-09 12:46:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:46:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:46:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:46:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:46:17,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:46:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:17,612 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:46:17,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:46:17,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:46:17,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:46:17,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:46:17 BasicIcfg [2020-11-09 12:46:17,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:46:17,619 INFO L168 Benchmark]: Toolchain (without parser) took 9181.40 ms. Allocated memory was 158.3 MB in the beginning and 234.9 MB in the end (delta: 76.5 MB). Free memory was 132.4 MB in the beginning and 134.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,619 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:46:17,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.16 ms. Allocated memory is still 158.3 MB. Free memory was 131.6 MB in the beginning and 136.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 158.3 MB. Free memory was 136.8 MB in the beginning and 135.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,622 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 158.3 MB. Free memory was 135.2 MB in the beginning and 133.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,622 INFO L168 Benchmark]: RCFGBuilder took 550.39 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 112.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,623 INFO L168 Benchmark]: TraceAbstraction took 7693.07 ms. Allocated memory was 158.3 MB in the beginning and 234.9 MB in the end (delta: 76.5 MB). Free memory was 111.6 MB in the beginning and 134.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:17,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 843.16 ms. Allocated memory is still 158.3 MB. Free memory was 131.6 MB in the beginning and 136.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 158.3 MB. Free memory was 136.8 MB in the beginning and 135.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 158.3 MB. Free memory was 135.2 MB in the beginning and 133.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.39 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 112.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7693.07 ms. Allocated memory was 158.3 MB in the beginning and 234.9 MB in the end (delta: 76.5 MB). Free memory was 111.6 MB in the beginning and 134.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.6s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 169 SDtfs, 141 SDslu, 208 SDs, 0 SdLazy, 118 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3264 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...