/usr/bin/java -Xmx16000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:46:25,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:46:25,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:46:25,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:46:25,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:46:25,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:46:25,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:46:25,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:46:25,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:46:25,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:46:25,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:46:25,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:46:25,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:46:25,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:46:25,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:46:25,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:46:25,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:46:25,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:46:25,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:46:25,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:46:25,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:46:25,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:46:25,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:46:25,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:46:25,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:46:25,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:46:25,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:46:25,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:46:25,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:46:25,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:46:25,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:46:25,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:46:25,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:46:25,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:46:25,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:46:25,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:46:25,560 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-NoLbe.epf [2021-01-20 14:46:25,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:46:25,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:46:25,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:46:25,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:46:25,596 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:46:25,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:46:25,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:46:25,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:46:25,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:46:25,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:46:25,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:46:25,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:46:25,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:46:25,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:46:25,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:46:25,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:46:25,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:46:25,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:46:25,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:46:25,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:46:25,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:46:25,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:46:25,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:46:25,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:46:25,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:46:25,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:46:25,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:46:25,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:46:25,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:46:25,602 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:46:25,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:46:25,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:46:26,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:46:26,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:46:26,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:46:26,014 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:46:26,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-01-20 14:46:26,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab05f70a/3cdf05c089824472b486688494a8d67b/FLAG0d489f182 [2021-01-20 14:46:26,789 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:46:26,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-01-20 14:46:26,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab05f70a/3cdf05c089824472b486688494a8d67b/FLAG0d489f182 [2021-01-20 14:46:27,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab05f70a/3cdf05c089824472b486688494a8d67b [2021-01-20 14:46:27,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:46:27,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:46:27,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:46:27,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:46:27,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:46:27,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d553280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27, skipping insertion in model container [2021-01-20 14:46:27,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:46:27,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:46:27,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:46:27,546 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:46:27,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:46:27,707 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:46:27,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27 WrapperNode [2021-01-20 14:46:27,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:46:27,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:46:27,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:46:27,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:46:27,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:46:27,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:46:27,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:46:27,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:46:27,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (1/1) ... [2021-01-20 14:46:27,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:46:27,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:46:27,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:46:27,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:46:27,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (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 [2021-01-20 14:46:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:46:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:46:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:46:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:46:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:46:27,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:46:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:46:27,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:46:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:46:27,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:46:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:46:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:46:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:46:27,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:46:27,925 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:46:28,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:46:28,446 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:46:28,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:46:28 BoogieIcfgContainer [2021-01-20 14:46:28,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:46:28,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:46:28,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:46:28,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:46:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:46:27" (1/3) ... [2021-01-20 14:46:28,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47699526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:46:28, skipping insertion in model container [2021-01-20 14:46:28,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:46:27" (2/3) ... [2021-01-20 14:46:28,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47699526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:46:28, skipping insertion in model container [2021-01-20 14:46:28,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:46:28" (3/3) ... [2021-01-20 14:46:28,463 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-01-20 14:46:28,483 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:46:28,484 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:46:28,488 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:46:28,489 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:46:28,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,550 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,550 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:46:28,568 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:46:28,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:46:28,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:46:28,625 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:46:28,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:46:28,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:46:28,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:46:28,626 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:46:28,626 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:46:28,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:46:28,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 14:46:29,415 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:46:29,521 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:29,522 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:29,522 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:29,529 INFO L82 PathProgramCache]: Analyzing trace with hash -736353114, now seen corresponding path program 1 times [2021-01-20 14:46:29,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:29,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689305355] [2021-01-20 14:46:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:29,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689305355] [2021-01-20 14:46:29,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:29,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:46:29,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321784586] [2021-01-20 14:46:29,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:46:29,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:30,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:46:30,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:46:30,043 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:30,448 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2021-01-20 14:46:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:46:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 14:46:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:30,518 INFO L225 Difference]: With dead ends: 10463 [2021-01-20 14:46:30,518 INFO L226 Difference]: Without dead ends: 3953 [2021-01-20 14:46:30,520 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:46:30,520 INFO L78 Accepts]: Start accepts. Automaton has 3953 states. Word has length 41 [2021-01-20 14:46:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:30,523 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states. [2021-01-20 14:46:30,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states. [2021-01-20 14:46:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:46:30,541 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:30,541 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:30,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:46:30,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:30,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2028391175, now seen corresponding path program 1 times [2021-01-20 14:46:30,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:30,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164525401] [2021-01-20 14:46:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:30,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164525401] [2021-01-20 14:46:30,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:30,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:46:30,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293460672] [2021-01-20 14:46:30,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:46:30,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:30,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:46:30,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:46:30,723 INFO L87 Difference]: Start difference. First operand 3953 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:30,940 INFO L93 Difference]: Finished difference Result 4697 states and 15760 transitions. [2021-01-20 14:46:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:46:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:46:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:30,977 INFO L225 Difference]: With dead ends: 4697 [2021-01-20 14:46:30,977 INFO L226 Difference]: Without dead ends: 3857 [2021-01-20 14:46:30,978 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:46:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3857 states. Word has length 43 [2021-01-20 14:46:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:30,979 INFO L481 AbstractCegarLoop]: Abstraction has 3857 states. [2021-01-20 14:46:30,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states. [2021-01-20 14:46:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:46:31,105 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:31,105 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:31,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:46:31,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 565402146, now seen corresponding path program 1 times [2021-01-20 14:46:31,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:31,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902016182] [2021-01-20 14:46:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:31,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902016182] [2021-01-20 14:46:31,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:31,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:46:31,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557403150] [2021-01-20 14:46:31,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:46:31,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:31,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:46:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:46:31,391 INFO L87 Difference]: Start difference. First operand 3857 states. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:31,622 INFO L93 Difference]: Finished difference Result 5101 states and 17053 transitions. [2021-01-20 14:46:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:46:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 14:46:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:31,646 INFO L225 Difference]: With dead ends: 5101 [2021-01-20 14:46:31,646 INFO L226 Difference]: Without dead ends: 2839 [2021-01-20 14:46:31,647 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:46:31,647 INFO L78 Accepts]: Start accepts. Automaton has 2839 states. Word has length 44 [2021-01-20 14:46:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:31,647 INFO L481 AbstractCegarLoop]: Abstraction has 2839 states. [2021-01-20 14:46:31,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states. [2021-01-20 14:46:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:46:31,656 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:31,656 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:31,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:46:31,657 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash -676376959, now seen corresponding path program 1 times [2021-01-20 14:46:31,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:31,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917069242] [2021-01-20 14:46:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:31,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917069242] [2021-01-20 14:46:31,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:31,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:46:31,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829892381] [2021-01-20 14:46:31,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:46:31,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:31,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:46:31,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:46:31,770 INFO L87 Difference]: Start difference. First operand 2839 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:31,925 INFO L93 Difference]: Finished difference Result 4551 states and 14670 transitions. [2021-01-20 14:46:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:46:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 14:46:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:31,952 INFO L225 Difference]: With dead ends: 4551 [2021-01-20 14:46:31,952 INFO L226 Difference]: Without dead ends: 3223 [2021-01-20 14:46:31,953 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:46:31,953 INFO L78 Accepts]: Start accepts. Automaton has 3223 states. Word has length 46 [2021-01-20 14:46:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:31,953 INFO L481 AbstractCegarLoop]: Abstraction has 3223 states. [2021-01-20 14:46:31,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:31,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states. [2021-01-20 14:46:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:46:31,962 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:31,962 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:31,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:46:31,963 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:31,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1519714679, now seen corresponding path program 1 times [2021-01-20 14:46:31,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:31,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110044718] [2021-01-20 14:46:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:32,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110044718] [2021-01-20 14:46:32,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:32,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:46:32,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370143678] [2021-01-20 14:46:32,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:46:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:46:32,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:46:32,074 INFO L87 Difference]: Start difference. First operand 3223 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:32,226 INFO L93 Difference]: Finished difference Result 3863 states and 12152 transitions. [2021-01-20 14:46:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:46:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:46:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:32,243 INFO L225 Difference]: With dead ends: 3863 [2021-01-20 14:46:32,244 INFO L226 Difference]: Without dead ends: 2967 [2021-01-20 14:46:32,244 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:46:32,244 INFO L78 Accepts]: Start accepts. Automaton has 2967 states. Word has length 47 [2021-01-20 14:46:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:32,245 INFO L481 AbstractCegarLoop]: Abstraction has 2967 states. [2021-01-20 14:46:32,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states. [2021-01-20 14:46:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:46:32,253 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:32,253 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:32,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:46:32,254 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:32,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2042804477, now seen corresponding path program 1 times [2021-01-20 14:46:32,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:32,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794975672] [2021-01-20 14:46:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:32,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794975672] [2021-01-20 14:46:32,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:32,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:46:32,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109920545] [2021-01-20 14:46:32,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:46:32,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:46:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:46:32,424 INFO L87 Difference]: Start difference. First operand 2967 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:32,602 INFO L93 Difference]: Finished difference Result 2835 states and 8647 transitions. [2021-01-20 14:46:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:46:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:46:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:32,612 INFO L225 Difference]: With dead ends: 2835 [2021-01-20 14:46:32,612 INFO L226 Difference]: Without dead ends: 2067 [2021-01-20 14:46:32,613 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:46:32,613 INFO L78 Accepts]: Start accepts. Automaton has 2067 states. Word has length 48 [2021-01-20 14:46:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:32,613 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states. [2021-01-20 14:46:32,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states. [2021-01-20 14:46:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:46:32,620 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:32,621 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:32,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:46:32,621 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash -207995556, now seen corresponding path program 1 times [2021-01-20 14:46:32,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:32,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297986148] [2021-01-20 14:46:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:32,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297986148] [2021-01-20 14:46:32,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:32,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:46:32,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599688252] [2021-01-20 14:46:32,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:46:32,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:46:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:46:32,808 INFO L87 Difference]: Start difference. First operand 2067 states. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:33,158 INFO L93 Difference]: Finished difference Result 1446 states and 4199 transitions. [2021-01-20 14:46:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:46:33,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 14:46:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:33,161 INFO L225 Difference]: With dead ends: 1446 [2021-01-20 14:46:33,162 INFO L226 Difference]: Without dead ends: 714 [2021-01-20 14:46:33,162 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:46:33,162 INFO L78 Accepts]: Start accepts. Automaton has 714 states. Word has length 50 [2021-01-20 14:46:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:33,163 INFO L481 AbstractCegarLoop]: Abstraction has 714 states. [2021-01-20 14:46:33,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states. [2021-01-20 14:46:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:46:33,166 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:46:33,166 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:46:33,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:46:33,167 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:46:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:46:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash 848095813, now seen corresponding path program 1 times [2021-01-20 14:46:33,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:46:33,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009624632] [2021-01-20 14:46:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:46:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:46:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:46:33,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009624632] [2021-01-20 14:46:33,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:46:33,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:46:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911349200] [2021-01-20 14:46:33,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:46:33,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:46:33,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:46:33,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:46:33,339 INFO L87 Difference]: Start difference. First operand 714 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:46:33,430 INFO L93 Difference]: Finished difference Result 606 states and 1684 transitions. [2021-01-20 14:46:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:46:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 14:46:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:46:33,431 INFO L225 Difference]: With dead ends: 606 [2021-01-20 14:46:33,431 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:46:33,432 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:46:33,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 52 [2021-01-20 14:46:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:46:33,432 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:46:33,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:46:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:46:33,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:46:33,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:46:33,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:46:33 BasicIcfg [2021-01-20 14:46:33,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:46:33,447 INFO L168 Benchmark]: Toolchain (without parser) took 6347.33 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 277.5 MB in the beginning and 522.2 MB in the end (delta: -244.7 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:46:33,448 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:46:33,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.38 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.6 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:46:33,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:46:33,450 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:46:33,451 INFO L168 Benchmark]: RCFGBuilder took 661.05 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 262.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:46:33,454 INFO L168 Benchmark]: TraceAbstraction took 4984.83 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 262.8 MB in the beginning and 522.2 MB in the end (delta: -259.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:46:33,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 612.38 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.6 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 661.05 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 262.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4984.83 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 262.8 MB in the beginning and 522.2 MB in the end (delta: -259.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 736 SDtfs, 1072 SDslu, 2364 SDs, 0 SdLazy, 303 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8447occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 43187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...