/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-ext/27_Boop_simple_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:28:40,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:28:40,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:28:40,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:28:40,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:28:40,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:28:40,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:28:40,929 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 [2021-07-09 16:28:40,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:28:40,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:28:40,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:28:40,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:28:40,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:28:40,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:28:40,968 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:28:40,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:28:40,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:28:40,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:28:40,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:28:40,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:28:40,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:28:40,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:28:40,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:28:40,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:28:40,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:28:40,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:28:40,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:28:40,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:28:40,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:28:40,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:28:40,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:28:40,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:28:40,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:28:40,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:28:40,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:28:40,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:28:40,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:28:40,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:28:40,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:28:40,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:28:41,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:28:41,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:28:41,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:28:41,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:28:41,298 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:28:41,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-07-09 16:28:41,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3c94c8/ef4497173f7945e4b74ef43944e4c1aa/FLAG9845863cd [2021-07-09 16:28:41,841 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:28:41,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-07-09 16:28:41,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3c94c8/ef4497173f7945e4b74ef43944e4c1aa/FLAG9845863cd [2021-07-09 16:28:42,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3c94c8/ef4497173f7945e4b74ef43944e4c1aa [2021-07-09 16:28:42,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:28:42,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:28:42,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:28:42,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:28:42,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:28:42,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4191e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42, skipping insertion in model container [2021-07-09 16:28:42,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:28:42,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:28:42,570 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] [2021-07-09 16:28:42,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:28:42,588 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:28:42,632 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] [2021-07-09 16:28:42,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:28:42,664 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:28:42,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42 WrapperNode [2021-07-09 16:28:42,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:28:42,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:28:42,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:28:42,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:28:42,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:28:42,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:28:42,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:28:42,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:28:42,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (1/1) ... [2021-07-09 16:28:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:28:42,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:28:42,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:28:42,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:28:42,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (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 [2021-07-09 16:28:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-07-09 16:28:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-09 16:28:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:28:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:28:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:28:42,863 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:28:43,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:28:43,120 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-07-09 16:28:43,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:28:43 BoogieIcfgContainer [2021-07-09 16:28:43,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:28:43,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:28:43,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:28:43,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:28:43,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:28:42" (1/3) ... [2021-07-09 16:28:43,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e8632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:28:43, skipping insertion in model container [2021-07-09 16:28:43,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:42" (2/3) ... [2021-07-09 16:28:43,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e8632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:28:43, skipping insertion in model container [2021-07-09 16:28:43,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:28:43" (3/3) ... [2021-07-09 16:28:43,128 INFO L111 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2021-07-09 16:28:43,132 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:28:43,133 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:28:43,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:28:43,133 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:28:43,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,210 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:43,212 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:28:43,232 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 16:28:43,249 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:28:43,249 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:28:43,249 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:28:43,249 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:28:43,250 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:28:43,250 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:28:43,250 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:28:43,250 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork1======== [2021-07-09 16:28:43,260 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 81 transitions, 172 flow [2021-07-09 16:28:43,381 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3143 states, 3140 states have (on average 3.3219745222929937) internal successors, (10431), 3142 states have internal predecessors, (10431), 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) [2021-07-09 16:28:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 3143 states, 3140 states have (on average 3.3219745222929937) internal successors, (10431), 3142 states have internal predecessors, (10431), 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) [2021-07-09 16:28:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 16:28:43,411 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:43,412 INFO L508 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] [2021-07-09 16:28:43,412 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1684821667, now seen corresponding path program 1 times [2021-07-09 16:28:43,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:43,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927731433] [2021-07-09 16:28:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:43,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:43,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927731433] [2021-07-09 16:28:43,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927731433] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:43,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:43,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 16:28:43,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829610483] [2021-07-09 16:28:43,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 16:28:43,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 16:28:43,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 16:28:43,643 INFO L87 Difference]: Start difference. First operand has 3143 states, 3140 states have (on average 3.3219745222929937) internal successors, (10431), 3142 states have internal predecessors, (10431), 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) [2021-07-09 16:28:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:43,686 INFO L93 Difference]: Finished difference Result 1933 states and 5737 transitions. [2021-07-09 16:28:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 16:28:43,688 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 [2021-07-09 16:28:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:43,718 INFO L225 Difference]: With dead ends: 1933 [2021-07-09 16:28:43,718 INFO L226 Difference]: Without dead ends: 1933 [2021-07-09 16:28:43,719 INFO L764 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 [2021-07-09 16:28:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-07-09 16:28:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2021-07-09 16:28:43,868 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) [2021-07-09 16:28:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5737 transitions. [2021-07-09 16:28:43,882 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5737 transitions. Word has length 31 [2021-07-09 16:28:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:43,882 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 5737 transitions. [2021-07-09 16:28:43,883 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) [2021-07-09 16:28:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5737 transitions. [2021-07-09 16:28:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-07-09 16:28:43,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:43,887 INFO L508 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] [2021-07-09 16:28:43,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:28:43,887 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1688921199, now seen corresponding path program 1 times [2021-07-09 16:28:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:43,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422470911] [2021-07-09 16:28:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:44,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:44,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422470911] [2021-07-09 16:28:44,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422470911] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:44,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:44,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 16:28:44,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793731738] [2021-07-09 16:28:44,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 16:28:44,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:44,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 16:28:44,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:44,003 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) [2021-07-09 16:28:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:44,024 INFO L93 Difference]: Finished difference Result 1195 states and 3287 transitions. [2021-07-09 16:28:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 16:28:44,024 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 [2021-07-09 16:28:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:44,030 INFO L225 Difference]: With dead ends: 1195 [2021-07-09 16:28:44,030 INFO L226 Difference]: Without dead ends: 987 [2021-07-09 16:28:44,031 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-07-09 16:28:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-07-09 16:28:44,055 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) [2021-07-09 16:28:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2665 transitions. [2021-07-09 16:28:44,059 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2665 transitions. Word has length 37 [2021-07-09 16:28:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:44,059 INFO L482 AbstractCegarLoop]: Abstraction has 987 states and 2665 transitions. [2021-07-09 16:28:44,059 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) [2021-07-09 16:28:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2665 transitions. [2021-07-09 16:28:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:28:44,062 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:44,062 INFO L508 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] [2021-07-09 16:28:44,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:28:44,063 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1156744724, now seen corresponding path program 1 times [2021-07-09 16:28:44,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:44,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529217763] [2021-07-09 16:28:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:44,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:44,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529217763] [2021-07-09 16:28:44,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529217763] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:44,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:44,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 16:28:44,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560364307] [2021-07-09 16:28:44,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 16:28:44,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:44,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 16:28:44,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:44,222 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) [2021-07-09 16:28:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:44,265 INFO L93 Difference]: Finished difference Result 1683 states and 4538 transitions. [2021-07-09 16:28:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 16:28:44,265 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 [2021-07-09 16:28:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:44,274 INFO L225 Difference]: With dead ends: 1683 [2021-07-09 16:28:44,274 INFO L226 Difference]: Without dead ends: 1611 [2021-07-09 16:28:44,274 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-07-09 16:28:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1323. [2021-07-09 16:28:44,312 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) [2021-07-09 16:28:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 3575 transitions. [2021-07-09 16:28:44,343 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 3575 transitions. Word has length 50 [2021-07-09 16:28:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:44,344 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 3575 transitions. [2021-07-09 16:28:44,344 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) [2021-07-09 16:28:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 3575 transitions. [2021-07-09 16:28:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:28:44,349 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:44,350 INFO L508 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] [2021-07-09 16:28:44,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:28:44,350 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash 139717396, now seen corresponding path program 2 times [2021-07-09 16:28:44,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:44,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244368011] [2021-07-09 16:28:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:44,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:44,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244368011] [2021-07-09 16:28:44,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244368011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:44,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:44,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 16:28:44,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952910712] [2021-07-09 16:28:44,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 16:28:44,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:44,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 16:28:44,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:44,431 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) [2021-07-09 16:28:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:44,446 INFO L93 Difference]: Finished difference Result 811 states and 2135 transitions. [2021-07-09 16:28:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 16:28:44,450 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 [2021-07-09 16:28:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:44,454 INFO L225 Difference]: With dead ends: 811 [2021-07-09 16:28:44,459 INFO L226 Difference]: Without dead ends: 795 [2021-07-09 16:28:44,459 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-07-09 16:28:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2021-07-09 16:28:44,474 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) [2021-07-09 16:28:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2073 transitions. [2021-07-09 16:28:44,477 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2073 transitions. Word has length 50 [2021-07-09 16:28:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:44,479 INFO L482 AbstractCegarLoop]: Abstraction has 795 states and 2073 transitions. [2021-07-09 16:28:44,479 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) [2021-07-09 16:28:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2073 transitions. [2021-07-09 16:28:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:28:44,480 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:44,480 INFO L508 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] [2021-07-09 16:28:44,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:28:44,481 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1061451281, now seen corresponding path program 1 times [2021-07-09 16:28:44,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:44,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698345992] [2021-07-09 16:28:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:44,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:44,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698345992] [2021-07-09 16:28:44,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698345992] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:44,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:44,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 16:28:44,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728654172] [2021-07-09 16:28:44,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 16:28:44,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:44,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 16:28:44,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:44,553 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) [2021-07-09 16:28:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:44,588 INFO L93 Difference]: Finished difference Result 963 states and 2524 transitions. [2021-07-09 16:28:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 16:28:44,589 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 [2021-07-09 16:28:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:44,593 INFO L225 Difference]: With dead ends: 963 [2021-07-09 16:28:44,594 INFO L226 Difference]: Without dead ends: 963 [2021-07-09 16:28:44,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 16:28:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-07-09 16:28:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 819. [2021-07-09 16:28:44,627 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) [2021-07-09 16:28:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2134 transitions. [2021-07-09 16:28:44,631 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2134 transitions. Word has length 52 [2021-07-09 16:28:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:44,631 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2134 transitions. [2021-07-09 16:28:44,631 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) [2021-07-09 16:28:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2134 transitions. [2021-07-09 16:28:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 16:28:44,633 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:44,633 INFO L508 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] [2021-07-09 16:28:44,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:28:44,633 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:44,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1937890307, now seen corresponding path program 1 times [2021-07-09 16:28:44,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:44,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901695776] [2021-07-09 16:28:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 16:28:44,660 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 16:28:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 16:28:44,679 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 16:28:44,709 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-09 16:28:44,709 INFO L609 BasicCegarLoop]: Counterexample might be feasible [2021-07-09 16:28:44,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:28:44,709 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was UNSAFE (1/2) [2021-07-09 16:28:44,711 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:28:44,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:28:44 BasicIcfg [2021-07-09 16:28:44,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:28:44,804 INFO L168 Benchmark]: Toolchain (without parser) took 2599.70 ms. Allocated memory was 190.8 MB in the beginning and 248.5 MB in the end (delta: 57.7 MB). Free memory was 153.7 MB in the beginning and 146.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,804 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 190.8 MB. Free memory is still 171.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:28:44,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.20 ms. Allocated memory is still 190.8 MB. Free memory was 153.5 MB in the beginning and 165.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.50 ms. Allocated memory is still 190.8 MB. Free memory was 165.2 MB in the beginning and 163.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,805 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 190.8 MB. Free memory was 163.1 MB in the beginning and 161.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,806 INFO L168 Benchmark]: RCFGBuilder took 372.96 ms. Allocated memory is still 190.8 MB. Free memory was 161.5 MB in the beginning and 139.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,806 INFO L168 Benchmark]: TraceAbstraction took 1680.41 ms. Allocated memory was 190.8 MB in the beginning and 248.5 MB in the end (delta: 57.7 MB). Free memory was 139.0 MB in the beginning and 146.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:44,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 190.8 MB. Free memory is still 171.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 458.20 ms. Allocated memory is still 190.8 MB. Free memory was 153.5 MB in the beginning and 165.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.50 ms. Allocated memory is still 190.8 MB. Free memory was 165.2 MB in the beginning and 163.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 190.8 MB. Free memory was 163.1 MB in the beginning and 161.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 372.96 ms. Allocated memory is still 190.8 MB. Free memory was 161.5 MB in the beginning and 139.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1680.41 ms. Allocated memory was 190.8 MB in the beginning and 248.5 MB in the end (delta: 57.7 MB). Free memory was 139.0 MB in the beginning and 146.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 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 for errors in thread instance: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1462.7ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 42.9ms, AutomataDifference: 254.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 131.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 368 SDtfs, 128 SDslu, 279 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3143occurred 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: 301.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 432 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.6ms SsaConstructionTime, 117.9ms SatisfiabilityAnalysisTime, 366.0ms 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...