/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:48:22,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:48:22,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:48:22,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:48:22,769 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 [2021-08-06 13:48:22,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:48:22,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:48:22,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:48:22,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:48:22,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:48:22,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:48:22,784 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:48:22,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:48:22,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:48:22,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:48:22,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:48:22,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:48:22,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:48:22,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:48:23,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:48:23,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:48:23,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:48:23,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:48:23,062 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:48:23,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-08-06 13:48:23,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3884748a/97cdff93725f4bd393e70b2f9a201f7d/FLAG45ae5b927 [2021-08-06 13:48:23,557 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:48:23,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-08-06 13:48:23,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3884748a/97cdff93725f4bd393e70b2f9a201f7d/FLAG45ae5b927 [2021-08-06 13:48:23,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3884748a/97cdff93725f4bd393e70b2f9a201f7d [2021-08-06 13:48:23,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:48:23,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:48:23,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:48:23,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:48:23,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:48:23,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:23,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc05bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23, skipping insertion in model container [2021-08-06 13:48:23,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:23,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:48:23,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:48:23,776 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i[949,962] [2021-08-06 13:48:23,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:48:23,931 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:48:23,939 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i[949,962] [2021-08-06 13:48:23,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:48:23,997 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:48:23,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23 WrapperNode [2021-08-06 13:48:23,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:48:23,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:48:23,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:48:23,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:48:24,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:48:24,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:48:24,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:48:24,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:48:24,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:48:24,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:48:24,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:48:24,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:48:24,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (1/1) ... [2021-08-06 13:48:24,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:48:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:48:24,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 13:48:24,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 13:48:24,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:48:24,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 13:48:24,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:48:24,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:48:24,160 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 13:48:24,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 13:48:24,160 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 13:48:24,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 13:48:24,161 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 13:48:24,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 13:48:24,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:48:24,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 13:48:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:48:24,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:48:24,165 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:48:24,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:48:24,509 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 13:48:24,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:48:24 BoogieIcfgContainer [2021-08-06 13:48:24,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:48:24,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:48:24,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:48:24,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:48:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:48:23" (1/3) ... [2021-08-06 13:48:24,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d8191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:48:24, skipping insertion in model container [2021-08-06 13:48:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:48:23" (2/3) ... [2021-08-06 13:48:24,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d8191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:48:24, skipping insertion in model container [2021-08-06 13:48:24,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:48:24" (3/3) ... [2021-08-06 13:48:24,515 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2021-08-06 13:48:24,521 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:48:24,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:48:24,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 13:48:24,521 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:48:24,573 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 13:48:24,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 13:48:24,612 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 13:48:24,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 13:48:24,622 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-08-06 13:48:24,779 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 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) [2021-08-06 13:48:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 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) [2021-08-06 13:48:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-06 13:48:24,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:24,825 INFO L512 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] [2021-08-06 13:48:24,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash -927759384, now seen corresponding path program 1 times [2021-08-06 13:48:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:24,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094284964] [2021-08-06 13:48:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:24,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:25,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:25,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094284964] [2021-08-06 13:48:25,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094284964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:25,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:25,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:25,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12557564] [2021-08-06 13:48:25,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:25,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:25,291 INFO L87 Difference]: Start difference. First operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-08-06 13:48:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:25,592 INFO L93 Difference]: Finished difference Result 9763 states and 32948 transitions. [2021-08-06 13:48:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:48:25,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-08-06 13:48:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:25,651 INFO L225 Difference]: With dead ends: 9763 [2021-08-06 13:48:25,651 INFO L226 Difference]: Without dead ends: 6348 [2021-08-06 13:48:25,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:48:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2021-08-06 13:48:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 5268. [2021-08-06 13:48:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 3.3497247009682933) internal successors, (17643), 5267 states have internal predecessors, (17643), 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) [2021-08-06 13:48:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 17643 transitions. [2021-08-06 13:48:25,981 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 17643 transitions. Word has length 49 [2021-08-06 13:48:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:25,982 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 17643 transitions. [2021-08-06 13:48:25,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-08-06 13:48:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 17643 transitions. [2021-08-06 13:48:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-06 13:48:25,991 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:25,991 INFO L512 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] [2021-08-06 13:48:25,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:48:25,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:25,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1744564713, now seen corresponding path program 1 times [2021-08-06 13:48:25,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:25,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603470819] [2021-08-06 13:48:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:25,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:26,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:26,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603470819] [2021-08-06 13:48:26,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603470819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:26,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:26,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:26,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105432751] [2021-08-06 13:48:26,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:26,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:26,103 INFO L87 Difference]: Start difference. First operand 5268 states and 17643 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-08-06 13:48:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:26,372 INFO L93 Difference]: Finished difference Result 8468 states and 27983 transitions. [2021-08-06 13:48:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:48:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2021-08-06 13:48:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:26,407 INFO L225 Difference]: With dead ends: 8468 [2021-08-06 13:48:26,407 INFO L226 Difference]: Without dead ends: 6388 [2021-08-06 13:48:26,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 166.1ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:48:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-08-06 13:48:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 5308. [2021-08-06 13:48:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5308 states, 5307 states have (on average 3.3448275862068964) internal successors, (17751), 5307 states have internal predecessors, (17751), 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) [2021-08-06 13:48:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5308 states to 5308 states and 17751 transitions. [2021-08-06 13:48:26,598 INFO L78 Accepts]: Start accepts. Automaton has 5308 states and 17751 transitions. Word has length 51 [2021-08-06 13:48:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:26,598 INFO L470 AbstractCegarLoop]: Abstraction has 5308 states and 17751 transitions. [2021-08-06 13:48:26,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-08-06 13:48:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5308 states and 17751 transitions. [2021-08-06 13:48:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 13:48:26,609 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:26,609 INFO L512 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] [2021-08-06 13:48:26,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:48:26,609 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1333734450, now seen corresponding path program 1 times [2021-08-06 13:48:26,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:26,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056391755] [2021-08-06 13:48:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:26,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:26,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:26,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056391755] [2021-08-06 13:48:26,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056391755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:26,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:26,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:26,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283970019] [2021-08-06 13:48:26,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:26,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:26,704 INFO L87 Difference]: Start difference. First operand 5308 states and 17751 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2021-08-06 13:48:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:26,923 INFO L93 Difference]: Finished difference Result 6948 states and 22928 transitions. [2021-08-06 13:48:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:48:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2021-08-06 13:48:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:26,947 INFO L225 Difference]: With dead ends: 6948 [2021-08-06 13:48:26,947 INFO L226 Difference]: Without dead ends: 5848 [2021-08-06 13:48:26,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 161.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:48:26,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2021-08-06 13:48:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4608. [2021-08-06 13:48:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4607 states have (on average 3.3169090514434556) internal successors, (15281), 4607 states have internal predecessors, (15281), 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) [2021-08-06 13:48:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 15281 transitions. [2021-08-06 13:48:27,129 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 15281 transitions. Word has length 53 [2021-08-06 13:48:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:27,129 INFO L470 AbstractCegarLoop]: Abstraction has 4608 states and 15281 transitions. [2021-08-06 13:48:27,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2021-08-06 13:48:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 15281 transitions. [2021-08-06 13:48:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 13:48:27,138 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:27,138 INFO L512 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] [2021-08-06 13:48:27,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:48:27,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1999347342, now seen corresponding path program 1 times [2021-08-06 13:48:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:27,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480638606] [2021-08-06 13:48:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:27,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:27,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:27,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480638606] [2021-08-06 13:48:27,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480638606] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:27,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:27,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:48:27,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802420467] [2021-08-06 13:48:27,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:48:27,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:48:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:48:27,219 INFO L87 Difference]: Start difference. First operand 4608 states and 15281 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2021-08-06 13:48:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:27,309 INFO L93 Difference]: Finished difference Result 5248 states and 17308 transitions. [2021-08-06 13:48:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:48:27,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 [2021-08-06 13:48:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:27,324 INFO L225 Difference]: With dead ends: 5248 [2021-08-06 13:48:27,324 INFO L226 Difference]: Without dead ends: 4548 [2021-08-06 13:48:27,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:48:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-08-06 13:48:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4468. [2021-08-06 13:48:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 3.304007163644504) internal successors, (14759), 4467 states have internal predecessors, (14759), 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) [2021-08-06 13:48:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 14759 transitions. [2021-08-06 13:48:27,506 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 14759 transitions. Word has length 53 [2021-08-06 13:48:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:27,507 INFO L470 AbstractCegarLoop]: Abstraction has 4468 states and 14759 transitions. [2021-08-06 13:48:27,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2021-08-06 13:48:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 14759 transitions. [2021-08-06 13:48:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 13:48:27,515 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:27,515 INFO L512 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] [2021-08-06 13:48:27,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:48:27,516 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash 632448106, now seen corresponding path program 1 times [2021-08-06 13:48:27,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:27,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31987779] [2021-08-06 13:48:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:27,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:27,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:27,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31987779] [2021-08-06 13:48:27,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31987779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:27,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:27,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:27,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907605780] [2021-08-06 13:48:27,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:27,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:27,593 INFO L87 Difference]: Start difference. First operand 4468 states and 14759 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-08-06 13:48:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:27,697 INFO L93 Difference]: Finished difference Result 6908 states and 22641 transitions. [2021-08-06 13:48:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:48:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-08-06 13:48:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:27,710 INFO L225 Difference]: With dead ends: 6908 [2021-08-06 13:48:27,711 INFO L226 Difference]: Without dead ends: 4828 [2021-08-06 13:48:27,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:48:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2021-08-06 13:48:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 3908. [2021-08-06 13:48:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3907 states have (on average 3.2585103660097263) internal successors, (12731), 3907 states have internal predecessors, (12731), 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) [2021-08-06 13:48:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 12731 transitions. [2021-08-06 13:48:27,870 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 12731 transitions. Word has length 54 [2021-08-06 13:48:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:27,871 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 12731 transitions. [2021-08-06 13:48:27,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-08-06 13:48:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 12731 transitions. [2021-08-06 13:48:27,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 13:48:27,878 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:27,879 INFO L512 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] [2021-08-06 13:48:27,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:48:27,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1558212015, now seen corresponding path program 1 times [2021-08-06 13:48:27,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:27,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144624632] [2021-08-06 13:48:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:27,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:27,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:27,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144624632] [2021-08-06 13:48:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144624632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:27,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:27,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:27,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994790629] [2021-08-06 13:48:27,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:27,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:27,949 INFO L87 Difference]: Start difference. First operand 3908 states and 12731 transitions. 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) [2021-08-06 13:48:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:28,054 INFO L93 Difference]: Finished difference Result 5518 states and 17732 transitions. [2021-08-06 13:48:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:48:28,055 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 [2021-08-06 13:48:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:28,062 INFO L225 Difference]: With dead ends: 5518 [2021-08-06 13:48:28,063 INFO L226 Difference]: Without dead ends: 2813 [2021-08-06 13:48:28,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:48:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2021-08-06 13:48:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2813. [2021-08-06 13:48:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 3.125533428165007) internal successors, (8789), 2812 states have internal predecessors, (8789), 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) [2021-08-06 13:48:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 8789 transitions. [2021-08-06 13:48:28,116 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 8789 transitions. Word has length 55 [2021-08-06 13:48:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:28,116 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 8789 transitions. [2021-08-06 13:48:28,117 INFO L471 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) [2021-08-06 13:48:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 8789 transitions. [2021-08-06 13:48:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 13:48:28,121 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:28,121 INFO L512 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, 1] [2021-08-06 13:48:28,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 13:48:28,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 369398949, now seen corresponding path program 1 times [2021-08-06 13:48:28,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:28,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460373778] [2021-08-06 13:48:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:28,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:28,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:28,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460373778] [2021-08-06 13:48:28,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460373778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:28,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:28,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 13:48:28,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469146390] [2021-08-06 13:48:28,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:48:28,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:48:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:48:28,229 INFO L87 Difference]: Start difference. First operand 2813 states and 8789 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2021-08-06 13:48:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:28,342 INFO L93 Difference]: Finished difference Result 3221 states and 9943 transitions. [2021-08-06 13:48:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:48:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 56 [2021-08-06 13:48:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:28,346 INFO L225 Difference]: With dead ends: 3221 [2021-08-06 13:48:28,347 INFO L226 Difference]: Without dead ends: 1461 [2021-08-06 13:48:28,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:48:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-08-06 13:48:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1461. [2021-08-06 13:48:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.9404109589041094) internal successors, (4293), 1460 states have internal predecessors, (4293), 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) [2021-08-06 13:48:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4293 transitions. [2021-08-06 13:48:28,373 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4293 transitions. Word has length 56 [2021-08-06 13:48:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:28,373 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 4293 transitions. [2021-08-06 13:48:28,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2021-08-06 13:48:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4293 transitions. [2021-08-06 13:48:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-06 13:48:28,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:28,376 INFO L512 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, 1, 1] [2021-08-06 13:48:28,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 13:48:28,376 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash 249964061, now seen corresponding path program 1 times [2021-08-06 13:48:28,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:28,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027536410] [2021-08-06 13:48:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:28,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:28,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:28,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027536410] [2021-08-06 13:48:28,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027536410] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:28,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:28,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:48:28,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121842222] [2021-08-06 13:48:28,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:48:28,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:48:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:48:28,446 INFO L87 Difference]: Start difference. First operand 1461 states and 4293 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-08-06 13:48:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:28,517 INFO L93 Difference]: Finished difference Result 1662 states and 4844 transitions. [2021-08-06 13:48:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:48:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-08-06 13:48:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:28,521 INFO L225 Difference]: With dead ends: 1662 [2021-08-06 13:48:28,521 INFO L226 Difference]: Without dead ends: 1326 [2021-08-06 13:48:28,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:48:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-08-06 13:48:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2021-08-06 13:48:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 2.900377358490566) internal successors, (3843), 1325 states have internal predecessors, (3843), 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) [2021-08-06 13:48:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 3843 transitions. [2021-08-06 13:48:28,544 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 3843 transitions. Word has length 57 [2021-08-06 13:48:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:28,544 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 3843 transitions. [2021-08-06 13:48:28,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-08-06 13:48:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 3843 transitions. [2021-08-06 13:48:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 13:48:28,546 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:28,546 INFO L512 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, 1, 1, 1] [2021-08-06 13:48:28,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 13:48:28,547 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1845120438, now seen corresponding path program 1 times [2021-08-06 13:48:28,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:28,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687927073] [2021-08-06 13:48:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:28,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:28,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:28,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687927073] [2021-08-06 13:48:28,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687927073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:28,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:28,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:48:28,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787124984] [2021-08-06 13:48:28,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:48:28,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:48:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:48:28,616 INFO L87 Difference]: Start difference. First operand 1326 states and 3843 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-06 13:48:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:28,697 INFO L93 Difference]: Finished difference Result 1218 states and 3423 transitions. [2021-08-06 13:48:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:48:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-08-06 13:48:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:28,700 INFO L225 Difference]: With dead ends: 1218 [2021-08-06 13:48:28,700 INFO L226 Difference]: Without dead ends: 966 [2021-08-06 13:48:28,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:48:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-08-06 13:48:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2021-08-06 13:48:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.75440414507772) internal successors, (2658), 965 states have internal predecessors, (2658), 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) [2021-08-06 13:48:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2658 transitions. [2021-08-06 13:48:28,715 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2658 transitions. Word has length 58 [2021-08-06 13:48:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:28,715 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2658 transitions. [2021-08-06 13:48:28,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-06 13:48:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2658 transitions. [2021-08-06 13:48:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-06 13:48:28,717 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:48:28,717 INFO L512 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, 1, 1, 1, 1] [2021-08-06 13:48:28,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 13:48:28,717 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:48:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:48:28,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1550104295, now seen corresponding path program 1 times [2021-08-06 13:48:28,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:48:28,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472866698] [2021-08-06 13:48:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:48:28,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:48:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:48:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:48:28,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:48:28,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472866698] [2021-08-06 13:48:28,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472866698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:48:28,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:48:28,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 13:48:28,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688666799] [2021-08-06 13:48:28,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:48:28,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:48:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:48:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:48:28,825 INFO L87 Difference]: Start difference. First operand 966 states and 2658 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-08-06 13:48:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:48:28,881 INFO L93 Difference]: Finished difference Result 669 states and 1767 transitions. [2021-08-06 13:48:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 13:48:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-08-06 13:48:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:48:28,881 INFO L225 Difference]: With dead ends: 669 [2021-08-06 13:48:28,881 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 13:48:28,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:48:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 13:48:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 13:48:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-06 13:48:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 13:48:28,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-06 13:48:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:48:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 13:48:28,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-08-06 13:48:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 13:48:28,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 13:48:28,884 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:48:28,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 13:48:28,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 13:48:28,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 13:48:28,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 13:48:28,888 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 13:48:28,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 13:48:28,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 01:48:28 BasicIcfg [2021-08-06 13:48:28,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 13:48:28,890 INFO L168 Benchmark]: Toolchain (without parser) took 5299.08 ms. Allocated memory was 223.3 MB in the beginning and 1.1 GB in the end (delta: 915.4 MB). Free memory was 186.4 MB in the beginning and 765.3 MB in the end (delta: -578.8 MB). Peak memory consumption was 338.0 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,890 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 223.3 MB. Free memory is still 204.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 13:48:28,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.44 ms. Allocated memory is still 223.3 MB. Free memory was 186.3 MB in the beginning and 196.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 223.3 MB. Free memory was 196.6 MB in the beginning and 195.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,890 INFO L168 Benchmark]: Boogie Preprocessor took 30.96 ms. Allocated memory is still 223.3 MB. Free memory was 195.0 MB in the beginning and 193.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,890 INFO L168 Benchmark]: RCFGBuilder took 431.91 ms. Allocated memory is still 223.3 MB. Free memory was 193.5 MB in the beginning and 169.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,891 INFO L168 Benchmark]: TraceAbstraction took 4377.75 ms. Allocated memory was 223.3 MB in the beginning and 1.1 GB in the end (delta: 915.4 MB). Free memory was 168.8 MB in the beginning and 765.3 MB in the end (delta: -596.4 MB). Peak memory consumption was 320.5 MB. Max. memory is 8.0 GB. [2021-08-06 13:48:28,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 223.3 MB. Free memory is still 204.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.44 ms. Allocated memory is still 223.3 MB. Free memory was 186.3 MB in the beginning and 196.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 223.3 MB. Free memory was 196.6 MB in the beginning and 195.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.96 ms. Allocated memory is still 223.3 MB. Free memory was 195.0 MB in the beginning and 193.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.91 ms. Allocated memory is still 223.3 MB. Free memory was 193.5 MB in the beginning and 169.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4377.75 ms. Allocated memory was 223.3 MB in the beginning and 1.1 GB in the end (delta: 915.4 MB). Free memory was 168.8 MB in the beginning and 765.3 MB in the end (delta: -596.4 MB). Peak memory consumption was 320.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4282.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 98.1ms, AutomataDifference: 1647.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 167.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1022 SDtfs, 1726 SDslu, 3427 SDs, 0 SdLazy, 338 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 943.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1146.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4400 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.1ms SsaConstructionTime, 113.0ms SatisfiabilityAnalysisTime, 948.4ms InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 13:48:28,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...