/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 08:43:33,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 08:43:33,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 08:43:33,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 08:43:33,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 08:43:33,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 08:43:33,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 08:43:33,924 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-Separate.epf [2021-06-05 08:43:33,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 08:43:33,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 08:43:33,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 08:43:33,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 08:43:33,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 08:43:33,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 08:43:33,966 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 08:43:33,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 08:43:33,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 08:43:33,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 08:43:33,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 08:43:33,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 08:43:33,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 08:43:33,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 08:43:33,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 08:43:33,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 08:43:33,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 08:43:33,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 08:43:33,970 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 08:43:33,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 08:43:34,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 08:43:34,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 08:43:34,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 08:43:34,287 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 08:43:34,288 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 08:43:34,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-06-05 08:43:34,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2940496/9cf63f36bb5b4312b964bb97ed74c61d/FLAG1fcf68ed8 [2021-06-05 08:43:34,825 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 08:43:34,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-06-05 08:43:34,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2940496/9cf63f36bb5b4312b964bb97ed74c61d/FLAG1fcf68ed8 [2021-06-05 08:43:34,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2940496/9cf63f36bb5b4312b964bb97ed74c61d [2021-06-05 08:43:34,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 08:43:34,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 08:43:34,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 08:43:34,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 08:43:34,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 08:43:34,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:43:34" (1/1) ... [2021-06-05 08:43:34,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778aed12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:34, skipping insertion in model container [2021-06-05 08:43:34,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:43:34" (1/1) ... [2021-06-05 08:43:34,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 08:43:34,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 08:43:35,170 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-ext/27_Boop_simple_vf.i[30297,30310] [2021-06-05 08:43:35,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 08:43:35,186 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 08:43:35,213 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-ext/27_Boop_simple_vf.i[30297,30310] [2021-06-05 08:43:35,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 08:43:35,270 INFO L208 MainTranslator]: Completed translation [2021-06-05 08:43:35,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35 WrapperNode [2021-06-05 08:43:35,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 08:43:35,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 08:43:35,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 08:43:35,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 08:43:35,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 08:43:35,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 08:43:35,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 08:43:35,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 08:43:35,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... [2021-06-05 08:43:35,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 08:43:35,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 08:43:35,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 08:43:35,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 08:43:35,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 08:43:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-05 08:43:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-05 08:43:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-05 08:43:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-05 08:43:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 08:43:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 08:43:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 08:43:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 08:43:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 08:43:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 08:43:35,402 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 08:43:35,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 08:43:35,692 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-06-05 08:43:35,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:43:35 BoogieIcfgContainer [2021-06-05 08:43:35,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 08:43:35,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 08:43:35,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 08:43:35,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 08:43:35,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:43:34" (1/3) ... [2021-06-05 08:43:35,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e5e55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:43:35, skipping insertion in model container [2021-06-05 08:43:35,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:43:35" (2/3) ... [2021-06-05 08:43:35,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e5e55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:43:35, skipping insertion in model container [2021-06-05 08:43:35,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:43:35" (3/3) ... [2021-06-05 08:43:35,700 INFO L111 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2021-06-05 08:43:35,709 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 08:43:35,710 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 08:43:35,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 08:43:35,711 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 08:43:35,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,752 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,767 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,767 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:43:35,787 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 08:43:35,807 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 08:43:35,835 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 08:43:35,835 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 08:43:35,835 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 08:43:35,835 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 08:43:35,835 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 08:43:35,835 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 08:43:35,835 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 08:43:35,836 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 08:43:35,850 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 81 transitions, 172 flow [2021-06-05 08:43:36,063 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3711 states, 3705 states have (on average 3.3681511470985157) internal successors, (12479), 3710 states have internal predecessors, (12479), 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) [2021-06-05 08:43:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 3711 states, 3705 states have (on average 3.3681511470985157) internal successors, (12479), 3710 states have internal predecessors, (12479), 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) [2021-06-05 08:43:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 08:43:36,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:36,104 INFO L521 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] [2021-06-05 08:43:36,104 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1684821667, now seen corresponding path program 1 times [2021-06-05 08:43:36,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:36,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984698857] [2021-06-05 08:43:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:43:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:43:36,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:43:36,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984698857] [2021-06-05 08:43:36,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984698857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:43:36,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:43:36,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 08:43:36,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302705864] [2021-06-05 08:43:36,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 08:43:36,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:43:36,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 08:43:36,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 08:43:36,356 INFO L87 Difference]: Start difference. First operand has 3711 states, 3705 states have (on average 3.3681511470985157) internal successors, (12479), 3710 states have internal predecessors, (12479), 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 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-06-05 08:43:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:43:36,399 INFO L93 Difference]: Finished difference Result 2194 states and 6493 transitions. [2021-06-05 08:43:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 08:43:36,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-06-05 08:43:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:43:36,434 INFO L225 Difference]: With dead ends: 2194 [2021-06-05 08:43:36,434 INFO L226 Difference]: Without dead ends: 1933 [2021-06-05 08:43:36,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 08:43:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-06-05 08:43:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2021-06-05 08:43:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 2.969461697722567) internal successors, (5737), 1932 states have internal predecessors, (5737), 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) [2021-06-05 08:43:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5737 transitions. [2021-06-05 08:43:36,568 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5737 transitions. Word has length 31 [2021-06-05 08:43:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:43:36,568 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 5737 transitions. [2021-06-05 08:43:36,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-06-05 08:43:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5737 transitions. [2021-06-05 08:43:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 08:43:36,577 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:36,577 INFO L521 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] [2021-06-05 08:43:36,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 08:43:36,577 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:36,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1688921199, now seen corresponding path program 1 times [2021-06-05 08:43:36,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:36,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807022527] [2021-06-05 08:43:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:43:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:43:36,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:43:36,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807022527] [2021-06-05 08:43:36,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807022527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:43:36,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:43:36,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:43:36,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033901680] [2021-06-05 08:43:36,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:43:36,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:43:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:43:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:43:36,698 INFO L87 Difference]: Start difference. First operand 1933 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-06-05 08:43:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:43:36,716 INFO L93 Difference]: Finished difference Result 1195 states and 3287 transitions. [2021-06-05 08:43:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:43:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-06-05 08:43:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:43:36,721 INFO L225 Difference]: With dead ends: 1195 [2021-06-05 08:43:36,721 INFO L226 Difference]: Without dead ends: 987 [2021-06-05 08:43:36,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:43:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-06-05 08:43:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-06-05 08:43:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 986 states have (on average 2.702839756592292) internal successors, (2665), 986 states have internal predecessors, (2665), 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) [2021-06-05 08:43:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2665 transitions. [2021-06-05 08:43:36,749 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2665 transitions. Word has length 37 [2021-06-05 08:43:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:43:36,750 INFO L482 AbstractCegarLoop]: Abstraction has 987 states and 2665 transitions. [2021-06-05 08:43:36,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-06-05 08:43:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2665 transitions. [2021-06-05 08:43:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 08:43:36,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:36,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:43:36,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 08:43:36,753 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash -857712588, now seen corresponding path program 1 times [2021-06-05 08:43:36,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:36,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879423094] [2021-06-05 08:43:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:43:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:43:36,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:43:36,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879423094] [2021-06-05 08:43:36,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879423094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:43:36,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:43:36,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 08:43:36,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142502548] [2021-06-05 08:43:36,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 08:43:36,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:43:36,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 08:43:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 08:43:36,870 INFO L87 Difference]: Start difference. First operand 987 states and 2665 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:43:36,922 INFO L93 Difference]: Finished difference Result 1683 states and 4538 transitions. [2021-06-05 08:43:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 08:43:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 08:43:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:43:36,931 INFO L225 Difference]: With dead ends: 1683 [2021-06-05 08:43:36,931 INFO L226 Difference]: Without dead ends: 1611 [2021-06-05 08:43:36,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 08:43:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-06-05 08:43:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1323. [2021-06-05 08:43:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 2.7042360060514374) internal successors, (3575), 1322 states have internal predecessors, (3575), 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) [2021-06-05 08:43:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 3575 transitions. [2021-06-05 08:43:36,988 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 3575 transitions. Word has length 50 [2021-06-05 08:43:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:43:36,990 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 3575 transitions. [2021-06-05 08:43:36,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 3575 transitions. [2021-06-05 08:43:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 08:43:36,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:36,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:43:36,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 08:43:36,997 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1874739916, now seen corresponding path program 2 times [2021-06-05 08:43:36,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:36,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298904176] [2021-06-05 08:43:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:43:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:43:37,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:43:37,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298904176] [2021-06-05 08:43:37,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298904176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:43:37,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:43:37,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:43:37,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615574088] [2021-06-05 08:43:37,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:43:37,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:43:37,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:43:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:43:37,075 INFO L87 Difference]: Start difference. First operand 1323 states and 3575 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:43:37,092 INFO L93 Difference]: Finished difference Result 811 states and 2135 transitions. [2021-06-05 08:43:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:43:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 08:43:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:43:37,104 INFO L225 Difference]: With dead ends: 811 [2021-06-05 08:43:37,105 INFO L226 Difference]: Without dead ends: 795 [2021-06-05 08:43:37,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:43:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-06-05 08:43:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2021-06-05 08:43:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.610831234256927) internal successors, (2073), 794 states have internal predecessors, (2073), 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) [2021-06-05 08:43:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2073 transitions. [2021-06-05 08:43:37,126 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2073 transitions. Word has length 50 [2021-06-05 08:43:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:43:37,128 INFO L482 AbstractCegarLoop]: Abstraction has 795 states and 2073 transitions. [2021-06-05 08:43:37,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2073 transitions. [2021-06-05 08:43:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 08:43:37,129 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:37,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:43:37,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 08:43:37,130 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:37,131 INFO L82 PathProgramCache]: Analyzing trace with hash 75322383, now seen corresponding path program 1 times [2021-06-05 08:43:37,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:37,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091428211] [2021-06-05 08:43:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:43:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:43:37,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:43:37,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091428211] [2021-06-05 08:43:37,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091428211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:43:37,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:43:37,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 08:43:37,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115932548] [2021-06-05 08:43:37,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 08:43:37,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:43:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 08:43:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 08:43:37,225 INFO L87 Difference]: Start difference. First operand 795 states and 2073 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:43:37,248 INFO L93 Difference]: Finished difference Result 963 states and 2524 transitions. [2021-06-05 08:43:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 08:43:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 08:43:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:43:37,252 INFO L225 Difference]: With dead ends: 963 [2021-06-05 08:43:37,252 INFO L226 Difference]: Without dead ends: 963 [2021-06-05 08:43:37,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 08:43:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-06-05 08:43:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 819. [2021-06-05 08:43:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.60880195599022) internal successors, (2134), 818 states have internal predecessors, (2134), 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) [2021-06-05 08:43:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2134 transitions. [2021-06-05 08:43:37,271 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2134 transitions. Word has length 52 [2021-06-05 08:43:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:43:37,271 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2134 transitions. [2021-06-05 08:43:37,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:43:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2134 transitions. [2021-06-05 08:43:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 08:43:37,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:43:37,274 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:43:37,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 08:43:37,274 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:43:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:43:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2096638435, now seen corresponding path program 1 times [2021-06-05 08:43:37,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:43:37,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216030305] [2021-06-05 08:43:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:43:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 08:43:37,287 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 08:43:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 08:43:37,297 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 08:43:37,320 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 08:43:37,320 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 08:43:37,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 08:43:37,321 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2021-06-05 08:43:37,324 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 08:43:37,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:43:37 BasicIcfg [2021-06-05 08:43:37,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 08:43:37,377 INFO L168 Benchmark]: Toolchain (without parser) took 2512.24 ms. Allocated memory is still 356.5 MB. Free memory was 319.2 MB in the beginning and 291.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.0 GB. [2021-06-05 08:43:37,377 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory was 337.3 MB in the beginning and 337.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:43:37,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.19 ms. Allocated memory is still 356.5 MB. Free memory was 319.0 MB in the beginning and 321.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-05 08:43:37,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.19 ms. Allocated memory is still 356.5 MB. Free memory was 321.0 MB in the beginning and 320.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:43:37,378 INFO L168 Benchmark]: Boogie Preprocessor took 19.69 ms. Allocated memory is still 356.5 MB. Free memory was 320.0 MB in the beginning and 317.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:43:37,379 INFO L168 Benchmark]: RCFGBuilder took 369.47 ms. Allocated memory is still 356.5 MB. Free memory was 317.9 MB in the beginning and 294.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:43:37,379 INFO L168 Benchmark]: TraceAbstraction took 1680.89 ms. Allocated memory is still 356.5 MB. Free memory was 293.8 MB in the beginning and 291.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.0 GB. [2021-06-05 08:43:37,394 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 356.5 MB. Free memory was 337.3 MB in the beginning and 337.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 403.19 ms. Allocated memory is still 356.5 MB. Free memory was 319.0 MB in the beginning and 321.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.19 ms. Allocated memory is still 356.5 MB. Free memory was 321.0 MB in the beginning and 320.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.69 ms. Allocated memory is still 356.5 MB. Free memory was 320.0 MB in the beginning and 317.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 369.47 ms. Allocated memory is still 356.5 MB. Free memory was 317.9 MB in the beginning and 294.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1680.89 ms. Allocated memory is still 356.5 MB. Free memory was 293.8 MB in the beginning and 291.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 710]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L685] 0 int usecount; VAL [usecount=0] [L686] 0 int locked; VAL [locked=0, usecount=0] [L687] 0 int flag1 = 0; VAL [flag1=0, locked=0, usecount=0] [L688] 0 int flag2 = 0; VAL [flag1=0, flag2=0, locked=0, usecount=0] [L689] 0 int release_thr1 = 0; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L744] 0 pthread_t t; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L745] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L717] 1 void* rval; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L718] 1 int count; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L719] 1 usecount = 0 VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L720] 1 locked = 0 VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L721] 1 release_thr1 = 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L722] COND TRUE 1 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L746] COND TRUE 0 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L746] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L692] COND FALSE 2 !(!release_thr1) VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L693] 2 usecount = usecount + 1 VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=1] [L694] COND FALSE 2 !(\read(locked)) VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=1] [L696] 2 locked = 1 VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=1, release_thr1=1, usecount=1] [L697] 2 flag1 = 1 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L724] COND TRUE 1 \read(flag1) VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L729] 1 rval = (void*)__VERIFIER_nondet_int() VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L730] COND TRUE 1 rval == 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L732] 1 count = 1 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L702] 1 usecount = usecount - 1 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=0] [L703] 1 locked = 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L738] COND TRUE 1 count != 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L729] 1 rval = (void*)__VERIFIER_nondet_int() VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L730] COND FALSE 1 !(rval == 0) VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L736] 1 count = 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L738] COND FALSE 1 !(count != 0) VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L702] 1 usecount = usecount - 1 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L703] 1 locked = 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L708] COND TRUE 1 usecount != 0 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L710] 1 reach_error() VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1488.7ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 58.8ms, AutomataDifference: 251.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 227.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 371 SDtfs, 128 SDslu, 279 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3711occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 243.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 432 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.9ms SsaConstructionTime, 99.7ms SatisfiabilityAnalysisTime, 364.2ms InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...