/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:07:41,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:07:41,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:07:41,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:07:41,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:07:41,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:07:41,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:07:41,380 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-Delay.epf [2021-08-21 17:07:41,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:07:41,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:07:41,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:07:41,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:07:41,400 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:07:41,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:07:41,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:07:41,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:41,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:07:41,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:07:41,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:07:41,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:07:41,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:07:41,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:07:41,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:07:41,651 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:07:41,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-08-21 17:07:41,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb980bcd2/585df62fc69c47a39b3a6a86da95b869/FLAGb627e8ea6 [2021-08-21 17:07:42,102 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:07:42,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-08-21 17:07:42,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb980bcd2/585df62fc69c47a39b3a6a86da95b869/FLAGb627e8ea6 [2021-08-21 17:07:42,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb980bcd2/585df62fc69c47a39b3a6a86da95b869 [2021-08-21 17:07:42,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:07:42,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:07:42,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:42,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:07:42,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:07:42,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6575fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42, skipping insertion in model container [2021-08-21 17:07:42,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:07:42,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:07:42,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i[950,963] [2021-08-21 17:07:42,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:42,803 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:07:42,811 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i[950,963] [2021-08-21 17:07:42,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:42,858 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:07:42,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42 WrapperNode [2021-08-21 17:07:42,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:42,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:42,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:07:42,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:07:42,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:42,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:07:42,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:07:42,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:07:42,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:07:42,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:07:42,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:07:42,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:07:42,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (1/1) ... [2021-08-21 17:07:42,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:42,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:07:42,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 17:07:42,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 17:07:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:07:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:07:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:07:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:07:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:07:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:07:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:07:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:07:42,973 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:07:43,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:07:43,291 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:07:43,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:43 BoogieIcfgContainer [2021-08-21 17:07:43,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:07:43,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:07:43,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:07:43,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:07:43,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:07:42" (1/3) ... [2021-08-21 17:07:43,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae5712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:43, skipping insertion in model container [2021-08-21 17:07:43,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:42" (2/3) ... [2021-08-21 17:07:43,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae5712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:43, skipping insertion in model container [2021-08-21 17:07:43,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:43" (3/3) ... [2021-08-21 17:07:43,299 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2021-08-21 17:07:43,303 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:07:43,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:07:43,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:07:43,303 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:07:43,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,347 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,347 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,352 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:43,358 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:07:43,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:07:43,396 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:07:43,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:07:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 4767 states have (on average 2.0612544577302288) internal successors, (9826), 5557 states have internal predecessors, (9826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 17:07:43,966 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:43,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:43,967 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:43,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1496974853, now seen corresponding path program 1 times [2021-08-21 17:07:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:43,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225826339] [2021-08-21 17:07:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:43,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:44,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:44,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225826339] [2021-08-21 17:07:44,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225826339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:44,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:44,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656832384] [2021-08-21 17:07:44,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:44,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:44,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:44,314 INFO L87 Difference]: Start difference. First operand has 5558 states, 4767 states have (on average 2.0612544577302288) internal successors, (9826), 5557 states have internal predecessors, (9826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:44,551 INFO L93 Difference]: Finished difference Result 6342 states and 11372 transitions. [2021-08-21 17:07:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:44,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-21 17:07:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:44,583 INFO L225 Difference]: With dead ends: 6342 [2021-08-21 17:07:44,584 INFO L226 Difference]: Without dead ends: 2381 [2021-08-21 17:07:44,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 161.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-08-21 17:07:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2021-08-21 17:07:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2346 states have (on average 2.2459505541346974) internal successors, (5269), 2380 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 5269 transitions. [2021-08-21 17:07:44,731 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 5269 transitions. Word has length 48 [2021-08-21 17:07:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:44,732 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 5269 transitions. [2021-08-21 17:07:44,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 5269 transitions. [2021-08-21 17:07:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 17:07:44,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:44,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:07:44,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1947198342, now seen corresponding path program 1 times [2021-08-21 17:07:44,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:44,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375109791] [2021-08-21 17:07:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:44,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:44,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:44,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375109791] [2021-08-21 17:07:44,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375109791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:44,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:44,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:44,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464357228] [2021-08-21 17:07:44,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:44,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:44,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:44,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:44,855 INFO L87 Difference]: Start difference. First operand 2381 states and 5269 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-08-21 17:07:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:44,995 INFO L93 Difference]: Finished difference Result 2811 states and 6363 transitions. [2021-08-21 17:07:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2021-08-21 17:07:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:45,009 INFO L225 Difference]: With dead ends: 2811 [2021-08-21 17:07:45,009 INFO L226 Difference]: Without dead ends: 2111 [2021-08-21 17:07:45,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2021-08-21 17:07:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2111. [2021-08-21 17:07:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2076 states have (on average 2.2114643545279384) internal successors, (4591), 2110 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 4591 transitions. [2021-08-21 17:07:45,069 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 4591 transitions. Word has length 50 [2021-08-21 17:07:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:45,069 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 4591 transitions. [2021-08-21 17:07:45,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-08-21 17:07:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 4591 transitions. [2021-08-21 17:07:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:07:45,073 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:45,073 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:45,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:07:45,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2103947409, now seen corresponding path program 1 times [2021-08-21 17:07:45,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:45,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270019543] [2021-08-21 17:07:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:45,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:45,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:45,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270019543] [2021-08-21 17:07:45,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270019543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:45,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:45,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:45,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715334029] [2021-08-21 17:07:45,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:45,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:45,202 INFO L87 Difference]: Start difference. First operand 2111 states and 4591 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:45,472 INFO L93 Difference]: Finished difference Result 4255 states and 9991 transitions. [2021-08-21 17:07:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:07:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-21 17:07:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:45,480 INFO L225 Difference]: With dead ends: 4255 [2021-08-21 17:07:45,480 INFO L226 Difference]: Without dead ends: 2031 [2021-08-21 17:07:45,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 208.9ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:07:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-08-21 17:07:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1751. [2021-08-21 17:07:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1716 states have (on average 2.143939393939394) internal successors, (3679), 1750 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 3679 transitions. [2021-08-21 17:07:45,511 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 3679 transitions. Word has length 53 [2021-08-21 17:07:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:45,513 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 3679 transitions. [2021-08-21 17:07:45,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 3679 transitions. [2021-08-21 17:07:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:07:45,516 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:45,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:45,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:07:45,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 537001611, now seen corresponding path program 1 times [2021-08-21 17:07:45,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:45,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229923678] [2021-08-21 17:07:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:45,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:45,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:45,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229923678] [2021-08-21 17:07:45,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229923678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:45,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:45,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:45,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820578932] [2021-08-21 17:07:45,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:45,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:45,634 INFO L87 Difference]: Start difference. First operand 1751 states and 3679 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:45,737 INFO L93 Difference]: Finished difference Result 2003 states and 4381 transitions. [2021-08-21 17:07:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:45,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-21 17:07:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:45,743 INFO L225 Difference]: With dead ends: 2003 [2021-08-21 17:07:45,744 INFO L226 Difference]: Without dead ends: 1711 [2021-08-21 17:07:45,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-08-21 17:07:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2021-08-21 17:07:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1678 states have (on average 2.134088200238379) internal successors, (3581), 1710 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 3581 transitions. [2021-08-21 17:07:45,784 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 3581 transitions. Word has length 53 [2021-08-21 17:07:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:45,784 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 3581 transitions. [2021-08-21 17:07:45,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 3581 transitions. [2021-08-21 17:07:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:07:45,786 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:45,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:45,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:07:45,787 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash -59960877, now seen corresponding path program 1 times [2021-08-21 17:07:45,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:45,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153317018] [2021-08-21 17:07:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:45,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:45,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:45,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153317018] [2021-08-21 17:07:45,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153317018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:45,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:45,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:45,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874433108] [2021-08-21 17:07:45,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:45,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:45,878 INFO L87 Difference]: Start difference. First operand 1711 states and 3581 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,004 INFO L93 Difference]: Finished difference Result 2863 states and 6393 transitions. [2021-08-21 17:07:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 17:07:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,010 INFO L225 Difference]: With dead ends: 2863 [2021-08-21 17:07:46,010 INFO L226 Difference]: Without dead ends: 1723 [2021-08-21 17:07:46,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2021-08-21 17:07:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1443. [2021-08-21 17:07:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1418 states have (on average 2.1100141043723553) internal successors, (2992), 1442 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2992 transitions. [2021-08-21 17:07:46,034 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2992 transitions. Word has length 54 [2021-08-21 17:07:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,034 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 2992 transitions. [2021-08-21 17:07:46,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2992 transitions. [2021-08-21 17:07:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-21 17:07:46,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:46,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:07:46,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1238857780, now seen corresponding path program 1 times [2021-08-21 17:07:46,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:46,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755046627] [2021-08-21 17:07:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:46,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:46,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:46,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755046627] [2021-08-21 17:07:46,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755046627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:46,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:46,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:46,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162394846] [2021-08-21 17:07:46,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:46,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:46,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:46,131 INFO L87 Difference]: Start difference. First operand 1443 states and 2992 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,214 INFO L93 Difference]: Finished difference Result 1981 states and 4328 transitions. [2021-08-21 17:07:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-21 17:07:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,218 INFO L225 Difference]: With dead ends: 1981 [2021-08-21 17:07:46,219 INFO L226 Difference]: Without dead ends: 1127 [2021-08-21 17:07:46,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-08-21 17:07:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2021-08-21 17:07:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1107 states have (on average 2.14453477868112) internal successors, (2374), 1126 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2374 transitions. [2021-08-21 17:07:46,236 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2374 transitions. Word has length 55 [2021-08-21 17:07:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,236 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2374 transitions. [2021-08-21 17:07:46,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2374 transitions. [2021-08-21 17:07:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:07:46,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:46,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:46,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:07:46,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:46,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1619005856, now seen corresponding path program 1 times [2021-08-21 17:07:46,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:46,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952881450] [2021-08-21 17:07:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:46,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:46,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:46,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952881450] [2021-08-21 17:07:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952881450] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:46,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:46,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913431928] [2021-08-21 17:07:46,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:46,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:46,322 INFO L87 Difference]: Start difference. First operand 1127 states and 2374 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,411 INFO L93 Difference]: Finished difference Result 1545 states and 3182 transitions. [2021-08-21 17:07:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 17:07:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,415 INFO L225 Difference]: With dead ends: 1545 [2021-08-21 17:07:46,415 INFO L226 Difference]: Without dead ends: 1005 [2021-08-21 17:07:46,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2021-08-21 17:07:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2021-08-21 17:07:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 985 states have (on average 2.163451776649746) internal successors, (2131), 1004 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 2131 transitions. [2021-08-21 17:07:46,436 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 2131 transitions. Word has length 56 [2021-08-21 17:07:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,437 INFO L470 AbstractCegarLoop]: Abstraction has 1005 states and 2131 transitions. [2021-08-21 17:07:46,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 2131 transitions. [2021-08-21 17:07:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:07:46,439 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:46,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:46,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:07:46,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:46,440 INFO L82 PathProgramCache]: Analyzing trace with hash -824639409, now seen corresponding path program 1 times [2021-08-21 17:07:46,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:46,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590328851] [2021-08-21 17:07:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:46,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:46,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:46,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590328851] [2021-08-21 17:07:46,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590328851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:46,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:46,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:46,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071948961] [2021-08-21 17:07:46,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:46,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:46,548 INFO L87 Difference]: Start difference. First operand 1005 states and 2131 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,632 INFO L93 Difference]: Finished difference Result 1092 states and 2214 transitions. [2021-08-21 17:07:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:07:46,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 17:07:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,634 INFO L225 Difference]: With dead ends: 1092 [2021-08-21 17:07:46,634 INFO L226 Difference]: Without dead ends: 638 [2021-08-21 17:07:46,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:07:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-08-21 17:07:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2021-08-21 17:07:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 620 states have (on average 2.0983870967741933) internal successors, (1301), 637 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1301 transitions. [2021-08-21 17:07:46,643 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1301 transitions. Word has length 57 [2021-08-21 17:07:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,644 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 1301 transitions. [2021-08-21 17:07:46,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1301 transitions. [2021-08-21 17:07:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:07:46,645 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:46,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:46,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:07:46,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1024175860, now seen corresponding path program 1 times [2021-08-21 17:07:46,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:46,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278447798] [2021-08-21 17:07:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:46,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:46,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:46,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278447798] [2021-08-21 17:07:46,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278447798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:46,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:46,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:07:46,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363078557] [2021-08-21 17:07:46,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:07:46,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:07:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:07:46,709 INFO L87 Difference]: Start difference. First operand 638 states and 1301 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,801 INFO L93 Difference]: Finished difference Result 503 states and 938 transitions. [2021-08-21 17:07:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:07:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-21 17:07:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,803 INFO L225 Difference]: With dead ends: 503 [2021-08-21 17:07:46,803 INFO L226 Difference]: Without dead ends: 242 [2021-08-21 17:07:46,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:07:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-08-21 17:07:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-08-21 17:07:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 233 states have (on average 1.793991416309013) internal successors, (418), 241 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 418 transitions. [2021-08-21 17:07:46,806 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 418 transitions. Word has length 58 [2021-08-21 17:07:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,806 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 418 transitions. [2021-08-21 17:07:46,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 418 transitions. [2021-08-21 17:07:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-21 17:07:46,807 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:46,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:46,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:07:46,807 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:46,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1892643759, now seen corresponding path program 1 times [2021-08-21 17:07:46,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:46,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186664343] [2021-08-21 17:07:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:46,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:46,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:46,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186664343] [2021-08-21 17:07:46,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186664343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:46,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:46,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:46,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746129207] [2021-08-21 17:07:46,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:46,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:46,867 INFO L87 Difference]: Start difference. First operand 242 states and 418 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:46,913 INFO L93 Difference]: Finished difference Result 206 states and 358 transitions. [2021-08-21 17:07:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:46,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-08-21 17:07:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:46,914 INFO L225 Difference]: With dead ends: 206 [2021-08-21 17:07:46,914 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:07:46,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:07:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:07:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:07:46,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-08-21 17:07:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:46,914 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:07:46,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:07:46,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:07:46,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:07:46,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:07:46,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:07:46,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:07:46,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:07:46,919 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:07:46,919 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:07:46,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:07:46 BasicIcfg [2021-08-21 17:07:46,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:07:46,921 INFO L168 Benchmark]: Toolchain (without parser) took 4426.36 ms. Allocated memory was 178.3 MB in the beginning and 259.0 MB in the end (delta: 80.7 MB). Free memory was 141.3 MB in the beginning and 221.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:46,921 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 178.3 MB. Free memory was 159.5 MB in the beginning and 159.5 MB in the end (delta: 88.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:07:46,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.18 ms. Allocated memory is still 178.3 MB. Free memory was 141.1 MB in the beginning and 152.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:46,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.35 ms. Allocated memory is still 178.3 MB. Free memory was 152.0 MB in the beginning and 149.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:46,922 INFO L168 Benchmark]: Boogie Preprocessor took 13.26 ms. Allocated memory is still 178.3 MB. Free memory was 149.9 MB in the beginning and 148.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:46,922 INFO L168 Benchmark]: RCFGBuilder took 395.57 ms. Allocated memory is still 178.3 MB. Free memory was 148.9 MB in the beginning and 124.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:46,922 INFO L168 Benchmark]: TraceAbstraction took 3625.53 ms. Allocated memory was 178.3 MB in the beginning and 259.0 MB in the end (delta: 80.7 MB). Free memory was 124.2 MB in the beginning and 221.3 MB in the end (delta: -97.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:07:46,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 178.3 MB. Free memory was 159.5 MB in the beginning and 159.5 MB in the end (delta: 88.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 362.18 ms. Allocated memory is still 178.3 MB. Free memory was 141.1 MB in the beginning and 152.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.35 ms. Allocated memory is still 178.3 MB. Free memory was 152.0 MB in the beginning and 149.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.26 ms. Allocated memory is still 178.3 MB. Free memory was 149.9 MB in the beginning and 148.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 395.57 ms. Allocated memory is still 178.3 MB. Free memory was 148.9 MB in the beginning and 124.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3625.53 ms. Allocated memory was 178.3 MB in the beginning and 259.0 MB in the end (delta: 80.7 MB). Free memory was 124.2 MB in the beginning and 221.3 MB in the end (delta: -97.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18605, positive: 17801, positive conditional: 17801, positive unconditional: 0, negative: 804, negative conditional: 804, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18524, positive: 17801, positive conditional: 0, positive unconditional: 17801, negative: 723, negative conditional: 0, negative unconditional: 723, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 643, positive: 622, positive conditional: 0, positive unconditional: 622, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 643, positive: 619, positive conditional: 0, positive unconditional: 619, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 69, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18524, positive: 17179, positive conditional: 0, positive unconditional: 17179, negative: 702, negative conditional: 0, negative unconditional: 702, unknown: 643, unknown conditional: 0, unknown unconditional: 643] , Statistics on independence cache: Total cache size (in pairs): 643, Positive cache size: 622, Positive conditional cache size: 0, Positive unconditional cache size: 622, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 81 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3527.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 46.8ms, AutomataDifference: 1378.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 540.8ms, PartialOrderReductionTime: 520.5ms, HoareTripleCheckerStatistics: 942 SDtfs, 1118 SDslu, 2980 SDs, 0 SdLazy, 385 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 270.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1002.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 339.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 560 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 148.9ms SatisfiabilityAnalysisTime, 888.5ms InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 1414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:07:46,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...