/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:27:07,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:27:07,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:27:07,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:27:07,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:27:07,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:27:07,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:27:07,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:27:07,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:27:07,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:27:07,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:27:07,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:27:07,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:27:07,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:27:07,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:27:07,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:27:07,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:27:07,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:27:07,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:27:07,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:27:07,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:27:07,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:27:07,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:27:07,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:27:07,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:27:07,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:27:07,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:27:07,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:27:07,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:27:07,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:27:07,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:27:07,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:27:07,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:27:07,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:27:07,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:27:07,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:27:07,622 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 [2021-01-26 17:27:07,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:27:07,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:27:07,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:27:07,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:27:07,654 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:27:07,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:27:07,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:27:07,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:27:07,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:27:07,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:27:07,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:27:07,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:27:07,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:27:07,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:27:07,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:27:07,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:27:07,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:27:07,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:27:07,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:27:07,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:27:07,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:27:07,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:27:07,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:27:07,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:27:07,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:27:07,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:27:07,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:27:07,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:27:07,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:27:07,659 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:27:07,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:27:08,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:27:08,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:27:08,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:27:08,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:27:08,087 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:27:08,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-01-26 17:27:08,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cc77297/865717c3f2454738adda941cc248c28e/FLAGd874b2671 [2021-01-26 17:27:08,921 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:27:08,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-01-26 17:27:08,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cc77297/865717c3f2454738adda941cc248c28e/FLAGd874b2671 [2021-01-26 17:27:09,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cc77297/865717c3f2454738adda941cc248c28e [2021-01-26 17:27:09,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:27:09,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:27:09,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:09,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:27:09,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:27:09,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:09,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c9b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09, skipping insertion in model container [2021-01-26 17:27:09,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:09,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:27:09,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:27:09,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:09,735 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:27:09,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:09,922 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:27:09,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09 WrapperNode [2021-01-26 17:27:09,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:09,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:09,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:27:09,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:27:09,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:09,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:10,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:27:10,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:27:10,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:27:10,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (1/1) ... [2021-01-26 17:27:10,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:27:10,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:27:10,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:27:10,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:27:10,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (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 [2021-01-26 17:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:27:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:27:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:27:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:27:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:27:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:27:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:27:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:27:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:27:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:27:10,205 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:27:10,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:27:10,781 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:27:10,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:10 BoogieIcfgContainer [2021-01-26 17:27:10,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:27:10,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:27:10,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:27:10,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:27:10,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:27:09" (1/3) ... [2021-01-26 17:27:10,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401f7c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:10, skipping insertion in model container [2021-01-26 17:27:10,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:09" (2/3) ... [2021-01-26 17:27:10,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401f7c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:10, skipping insertion in model container [2021-01-26 17:27:10,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:10" (3/3) ... [2021-01-26 17:27:10,793 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-01-26 17:27:10,810 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:27:10,810 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:27:10,814 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:27:10,815 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:27:10,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,859 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,859 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,868 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:10,882 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:27:10,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:27:10,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:27:10,921 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:27:10,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:27:10,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:27:10,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:27:10,922 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:27:10,922 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:27:10,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:27:10,935 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 80 transitions, 175 flow [2021-01-26 17:27:11,870 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2021-01-26 17:27:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2021-01-26 17:27:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-26 17:27:11,966 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:11,967 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] [2021-01-26 17:27:11,968 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:11,976 INFO L82 PathProgramCache]: Analyzing trace with hash 188737205, now seen corresponding path program 1 times [2021-01-26 17:27:11,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:11,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754240528] [2021-01-26 17:27:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:12,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754240528] [2021-01-26 17:27:12,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:12,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:12,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849118415] [2021-01-26 17:27:12,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:12,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:12,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:12,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:12,620 INFO L87 Difference]: Start difference. First operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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 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) [2021-01-26 17:27:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:13,038 INFO L93 Difference]: Finished difference Result 12201 states and 42465 transitions. [2021-01-26 17:27:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:13,041 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 [2021-01-26 17:27:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:13,103 INFO L225 Difference]: With dead ends: 12201 [2021-01-26 17:27:13,103 INFO L226 Difference]: Without dead ends: 4606 [2021-01-26 17:27:13,105 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:13,105 INFO L78 Accepts]: Start accepts. Automaton has 4606 states. Word has length 43 [2021-01-26 17:27:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:13,107 INFO L481 AbstractCegarLoop]: Abstraction has 4606 states. [2021-01-26 17:27:13,108 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) [2021-01-26 17:27:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states. [2021-01-26 17:27:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:27:13,124 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:13,124 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] [2021-01-26 17:27:13,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:27:13,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:13,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1390475924, now seen corresponding path program 1 times [2021-01-26 17:27:13,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:13,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54713835] [2021-01-26 17:27:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:13,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54713835] [2021-01-26 17:27:13,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:13,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:13,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522672825] [2021-01-26 17:27:13,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:13,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:13,490 INFO L87 Difference]: Start difference. First operand 4606 states. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-26 17:27:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:13,916 INFO L93 Difference]: Finished difference Result 5726 states and 19296 transitions. [2021-01-26 17:27:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-01-26 17:27:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:13,946 INFO L225 Difference]: With dead ends: 5726 [2021-01-26 17:27:13,946 INFO L226 Difference]: Without dead ends: 2871 [2021-01-26 17:27:13,948 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-26 17:27:13,948 INFO L78 Accepts]: Start accepts. Automaton has 2871 states. Word has length 45 [2021-01-26 17:27:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:13,949 INFO L481 AbstractCegarLoop]: Abstraction has 2871 states. [2021-01-26 17:27:13,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-26 17:27:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states. [2021-01-26 17:27:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:27:13,962 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:13,962 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, 1] [2021-01-26 17:27:13,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:27:13,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:13,966 INFO L82 PathProgramCache]: Analyzing trace with hash -983473269, now seen corresponding path program 1 times [2021-01-26 17:27:13,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:13,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873425069] [2021-01-26 17:27:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:14,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873425069] [2021-01-26 17:27:14,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:14,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:14,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111057699] [2021-01-26 17:27:14,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:14,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:14,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:14,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:14,234 INFO L87 Difference]: Start difference. First operand 2871 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) [2021-01-26 17:27:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:14,506 INFO L93 Difference]: Finished difference Result 3791 states and 12381 transitions. [2021-01-26 17:27:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:14,507 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 [2021-01-26 17:27:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:14,521 INFO L225 Difference]: With dead ends: 3791 [2021-01-26 17:27:14,521 INFO L226 Difference]: Without dead ends: 1761 [2021-01-26 17:27:14,522 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-26 17:27:14,522 INFO L78 Accepts]: Start accepts. Automaton has 1761 states. Word has length 48 [2021-01-26 17:27:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:14,523 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states. [2021-01-26 17:27:14,523 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) [2021-01-26 17:27:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2021-01-26 17:27:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 17:27:14,529 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:14,529 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] [2021-01-26 17:27:14,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:27:14,529 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:14,530 INFO L82 PathProgramCache]: Analyzing trace with hash -514850718, now seen corresponding path program 1 times [2021-01-26 17:27:14,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:14,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088130425] [2021-01-26 17:27:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:14,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088130425] [2021-01-26 17:27:14,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:14,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:14,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855188377] [2021-01-26 17:27:14,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:14,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:14,665 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-01-26 17:27:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:14,838 INFO L93 Difference]: Finished difference Result 2227 states and 6964 transitions. [2021-01-26 17:27:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2021-01-26 17:27:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:14,853 INFO L225 Difference]: With dead ends: 2227 [2021-01-26 17:27:14,853 INFO L226 Difference]: Without dead ends: 1635 [2021-01-26 17:27:14,853 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 [2021-01-26 17:27:14,854 INFO L78 Accepts]: Start accepts. Automaton has 1635 states. Word has length 51 [2021-01-26 17:27:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:14,854 INFO L481 AbstractCegarLoop]: Abstraction has 1635 states. [2021-01-26 17:27:14,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-01-26 17:27:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states. [2021-01-26 17:27:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:27:14,860 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:14,860 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] [2021-01-26 17:27:14,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:27:14,860 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:14,861 INFO L82 PathProgramCache]: Analyzing trace with hash -578455667, now seen corresponding path program 1 times [2021-01-26 17:27:14,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:14,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477897904] [2021-01-26 17:27:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:15,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477897904] [2021-01-26 17:27:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:15,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652188982] [2021-01-26 17:27:15,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:15,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:15,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:15,011 INFO L87 Difference]: Start difference. First operand 1635 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) [2021-01-26 17:27:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:15,248 INFO L93 Difference]: Finished difference Result 1794 states and 5497 transitions. [2021-01-26 17:27:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:15,249 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 [2021-01-26 17:27:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:15,260 INFO L225 Difference]: With dead ends: 1794 [2021-01-26 17:27:15,260 INFO L226 Difference]: Without dead ends: 1290 [2021-01-26 17:27:15,261 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:27:15,261 INFO L78 Accepts]: Start accepts. Automaton has 1290 states. Word has length 52 [2021-01-26 17:27:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:15,261 INFO L481 AbstractCegarLoop]: Abstraction has 1290 states. [2021-01-26 17:27:15,262 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) [2021-01-26 17:27:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states. [2021-01-26 17:27:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-26 17:27:15,267 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:15,267 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, 1] [2021-01-26 17:27:15,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:27:15,268 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1654188560, now seen corresponding path program 1 times [2021-01-26 17:27:15,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:15,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320383851] [2021-01-26 17:27:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:15,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320383851] [2021-01-26 17:27:15,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:15,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:27:15,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087262593] [2021-01-26 17:27:15,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:27:15,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:27:15,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:27:15,412 INFO L87 Difference]: Start difference. First operand 1290 states. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-01-26 17:27:15,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:15,643 INFO L93 Difference]: Finished difference Result 1056 states and 3067 transitions. [2021-01-26 17:27:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:27:15,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2021-01-26 17:27:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:15,650 INFO L225 Difference]: With dead ends: 1056 [2021-01-26 17:27:15,651 INFO L226 Difference]: Without dead ends: 732 [2021-01-26 17:27:15,651 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:27:15,652 INFO L78 Accepts]: Start accepts. Automaton has 732 states. Word has length 53 [2021-01-26 17:27:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:15,652 INFO L481 AbstractCegarLoop]: Abstraction has 732 states. [2021-01-26 17:27:15,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-01-26 17:27:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states. [2021-01-26 17:27:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-26 17:27:15,655 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:15,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:15,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:27:15,656 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:15,657 INFO L82 PathProgramCache]: Analyzing trace with hash -342773393, now seen corresponding path program 1 times [2021-01-26 17:27:15,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:15,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098173677] [2021-01-26 17:27:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:15,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098173677] [2021-01-26 17:27:15,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:15,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:15,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487241688] [2021-01-26 17:27:15,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:15,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:15,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:15,778 INFO L87 Difference]: Start difference. First operand 732 states. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-26 17:27:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:15,875 INFO L93 Difference]: Finished difference Result 624 states and 1726 transitions. [2021-01-26 17:27:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:27:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-01-26 17:27:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:15,876 INFO L225 Difference]: With dead ends: 624 [2021-01-26 17:27:15,876 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:27:15,877 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:15,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 55 [2021-01-26 17:27:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:15,877 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:27:15,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-26 17:27:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:27:15,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:27:15,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:27:15,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:27:15 BasicIcfg [2021-01-26 17:27:15,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:27:15,886 INFO L168 Benchmark]: Toolchain (without parser) took 6737.22 ms. Allocated memory was 302.0 MB in the beginning and 589.3 MB in the end (delta: 287.3 MB). Free memory was 276.7 MB in the beginning and 410.3 MB in the end (delta: -133.5 MB). Peak memory consumption was 155.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:15,887 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:15,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 244.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:15,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.73 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 243.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:15,889 INFO L168 Benchmark]: Boogie Preprocessor took 79.22 ms. Allocated memory is still 302.0 MB. Free memory was 243.0 MB in the beginning and 284.7 MB in the end (delta: -41.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:15,890 INFO L168 Benchmark]: RCFGBuilder took 678.42 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 261.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:15,891 INFO L168 Benchmark]: TraceAbstraction took 5097.77 ms. Allocated memory was 302.0 MB in the beginning and 589.3 MB in the end (delta: 287.3 MB). Free memory was 260.4 MB in the beginning and 410.3 MB in the end (delta: -149.8 MB). Peak memory consumption was 136.4 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:15,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 763.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 244.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 92.73 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 243.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 79.22 ms. Allocated memory is still 302.0 MB. Free memory was 243.0 MB in the beginning and 284.7 MB in the end (delta: -41.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. * RCFGBuilder took 678.42 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 261.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5097.77 ms. Allocated memory was 302.0 MB in the beginning and 589.3 MB in the end (delta: 287.3 MB). Free memory was 260.4 MB in the beginning and 410.3 MB in the end (delta: -149.8 MB). Peak memory consumption was 136.4 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 645 SDtfs, 968 SDslu, 2091 SDs, 0 SdLazy, 259 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9849occurred 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, 1.2s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 45502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...