/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/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:06:37,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:06:37,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:06:37,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:06:37,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:06:37,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:06:37,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:06:37,215 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 [2021-08-06 19:06:37,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:06:37,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:06:37,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:06:37,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:06:37,254 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:06:37,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:06:37,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:06:37,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:06:37,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:06:37,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:06:37,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:06:37,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:06:37,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:06:37,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:06:37,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:06:37,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:06:37,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:06:37,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:06:37,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:06:37,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:06:37,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:06:37,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:06:37,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:06:37,259 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:06:37,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:06:37,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:06:37,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:06:37,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:06:37,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:06:37,567 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:06:37,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-08-06 19:06:37,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db48722c/7b61c54517324c0d95453454e2ab72bf/FLAGb7e58cfb9 [2021-08-06 19:06:38,050 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:06:38,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-08-06 19:06:38,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db48722c/7b61c54517324c0d95453454e2ab72bf/FLAGb7e58cfb9 [2021-08-06 19:06:38,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db48722c/7b61c54517324c0d95453454e2ab72bf [2021-08-06 19:06:38,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:06:38,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:06:38,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:06:38,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:06:38,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:06:38,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a53f194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38, skipping insertion in model container [2021-08-06 19:06:38,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:06:38,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:06:38,191 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i[949,962] [2021-08-06 19:06:38,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:06:38,313 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:06:38,320 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i[949,962] [2021-08-06 19:06:38,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:06:38,368 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:06:38,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38 WrapperNode [2021-08-06 19:06:38,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:06:38,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:06:38,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:06:38,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:06:38,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:06:38,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:06:38,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:06:38,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:06:38,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:06:38,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:06:38,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:06:38,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:06:38,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (1/1) ... [2021-08-06 19:06:38,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:06:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:06:38,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 19:06:38,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 19:06:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:06:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:06:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:06:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:06:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:06:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:06:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:06:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:06:38,538 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:06:38,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:06:38,910 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:06:38,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:06:38 BoogieIcfgContainer [2021-08-06 19:06:38,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:06:38,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:06:38,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:06:38,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:06:38,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:06:38" (1/3) ... [2021-08-06 19:06:38,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca6e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:06:38, skipping insertion in model container [2021-08-06 19:06:38,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:06:38" (2/3) ... [2021-08-06 19:06:38,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca6e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:06:38, skipping insertion in model container [2021-08-06 19:06:38,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:06:38" (3/3) ... [2021-08-06 19:06:38,918 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2021-08-06 19:06:38,923 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:06:38,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:06:38,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:06:38,924 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:06:38,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,967 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,967 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,968 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,974 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,974 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:06:38,979 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:06:39,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:06:39,010 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:06:39,010 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 19:06:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 4767 states have (on average 2.076148521082442) internal successors, (9897), 5557 states have internal predecessors, (9897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 19:06:39,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:39,521 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] [2021-08-06 19:06:39,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2015526074, now seen corresponding path program 1 times [2021-08-06 19:06:39,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:39,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785162425] [2021-08-06 19:06:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:39,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:39,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:39,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785162425] [2021-08-06 19:06:39,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785162425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:39,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:39,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:06:39,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031640707] [2021-08-06 19:06:39,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:06:39,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:06:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:06:39,897 INFO L87 Difference]: Start difference. First operand has 5558 states, 4767 states have (on average 2.076148521082442) internal successors, (9897), 5557 states have internal predecessors, (9897), 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) [2021-08-06 19:06:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:40,155 INFO L93 Difference]: Finished difference Result 6678 states and 12038 transitions. [2021-08-06 19:06:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:06:40,157 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 [2021-08-06 19:06:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:40,188 INFO L225 Difference]: With dead ends: 6678 [2021-08-06 19:06:40,188 INFO L226 Difference]: Without dead ends: 2823 [2021-08-06 19:06:40,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:06:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-08-06 19:06:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2021-08-06 19:06:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2774 states have (on average 2.2458543619322278) internal successors, (6230), 2822 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 6230 transitions. [2021-08-06 19:06:40,290 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 6230 transitions. Word has length 48 [2021-08-06 19:06:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:40,291 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 6230 transitions. [2021-08-06 19:06:40,291 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) [2021-08-06 19:06:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 6230 transitions. [2021-08-06 19:06:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 19:06:40,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:40,294 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] [2021-08-06 19:06:40,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:06:40,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:40,295 INFO L82 PathProgramCache]: Analyzing trace with hash 399159355, now seen corresponding path program 1 times [2021-08-06 19:06:40,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:40,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945694157] [2021-08-06 19:06:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:40,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:40,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:40,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945694157] [2021-08-06 19:06:40,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945694157] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:40,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:06:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363534483] [2021-08-06 19:06:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:06:40,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:06:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:06:40,415 INFO L87 Difference]: Start difference. First operand 2823 states and 6230 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) [2021-08-06 19:06:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:40,543 INFO L93 Difference]: Finished difference Result 3403 states and 7760 transitions. [2021-08-06 19:06:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:06:40,544 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 [2021-08-06 19:06:40,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:40,555 INFO L225 Difference]: With dead ends: 3403 [2021-08-06 19:06:40,555 INFO L226 Difference]: Without dead ends: 2703 [2021-08-06 19:06:40,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:06:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2021-08-06 19:06:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2703. [2021-08-06 19:06:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 2654 states have (on average 2.263752825923135) internal successors, (6008), 2702 states have internal predecessors, (6008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 6008 transitions. [2021-08-06 19:06:40,614 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 6008 transitions. Word has length 50 [2021-08-06 19:06:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:40,615 INFO L470 AbstractCegarLoop]: Abstraction has 2703 states and 6008 transitions. [2021-08-06 19:06:40,615 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) [2021-08-06 19:06:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 6008 transitions. [2021-08-06 19:06:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-06 19:06:40,618 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:40,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:06:40,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:06:40,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:40,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1489939159, now seen corresponding path program 1 times [2021-08-06 19:06:40,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:40,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612731918] [2021-08-06 19:06:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:40,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:40,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:40,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612731918] [2021-08-06 19:06:40,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612731918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:40,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:40,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:06:40,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115799904] [2021-08-06 19:06:40,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:06:40,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:06:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:06:40,714 INFO L87 Difference]: Start difference. First operand 2703 states and 6008 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:40,834 INFO L93 Difference]: Finished difference Result 4089 states and 9615 transitions. [2021-08-06 19:06:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:06:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-06 19:06:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:40,845 INFO L225 Difference]: With dead ends: 4089 [2021-08-06 19:06:40,845 INFO L226 Difference]: Without dead ends: 2671 [2021-08-06 19:06:40,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:06:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2021-08-06 19:06:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2181. [2021-08-06 19:06:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2146 states have (on average 2.2357875116495807) internal successors, (4798), 2180 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 4798 transitions. [2021-08-06 19:06:40,905 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 4798 transitions. Word has length 51 [2021-08-06 19:06:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:40,906 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 4798 transitions. [2021-08-06 19:06:40,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:40,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 4798 transitions. [2021-08-06 19:06:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-06 19:06:40,909 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:40,909 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] [2021-08-06 19:06:40,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:06:40,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash 450918460, now seen corresponding path program 1 times [2021-08-06 19:06:40,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:40,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70244763] [2021-08-06 19:06:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:40,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:40,985 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:06:40,987 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:06:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:41,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:41,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70244763] [2021-08-06 19:06:41,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70244763] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:41,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:41,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:06:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974049438] [2021-08-06 19:06:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:06:41,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:06:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:06:41,039 INFO L87 Difference]: Start difference. First operand 2181 states and 4798 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:41,180 INFO L93 Difference]: Finished difference Result 2557 states and 5997 transitions. [2021-08-06 19:06:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:06:41,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-06 19:06:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:41,184 INFO L225 Difference]: With dead ends: 2557 [2021-08-06 19:06:41,185 INFO L226 Difference]: Without dead ends: 1165 [2021-08-06 19:06:41,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:06:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-08-06 19:06:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 989. [2021-08-06 19:06:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 969 states have (on average 2.1207430340557276) internal successors, (2055), 988 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 2055 transitions. [2021-08-06 19:06:41,202 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 2055 transitions. Word has length 52 [2021-08-06 19:06:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:41,203 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 2055 transitions. [2021-08-06 19:06:41,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 2055 transitions. [2021-08-06 19:06:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 19:06:41,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:41,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:06:41,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:06:41,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash 869232195, now seen corresponding path program 1 times [2021-08-06 19:06:41,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:41,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404521903] [2021-08-06 19:06:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:41,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:41,264 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,266 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:41,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:41,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404521903] [2021-08-06 19:06:41,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404521903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:41,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:41,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:06:41,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019011705] [2021-08-06 19:06:41,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:06:41,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:06:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:06:41,278 INFO L87 Difference]: Start difference. First operand 989 states and 2055 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:41,364 INFO L93 Difference]: Finished difference Result 1196 states and 2317 transitions. [2021-08-06 19:06:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:06:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-06 19:06:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:41,368 INFO L225 Difference]: With dead ends: 1196 [2021-08-06 19:06:41,368 INFO L226 Difference]: Without dead ends: 840 [2021-08-06 19:06:41,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:06:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-08-06 19:06:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2021-08-06 19:06:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 820 states have (on average 2.158536585365854) internal successors, (1770), 839 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1770 transitions. [2021-08-06 19:06:41,382 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1770 transitions. Word has length 55 [2021-08-06 19:06:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:41,382 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1770 transitions. [2021-08-06 19:06:41,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1770 transitions. [2021-08-06 19:06:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 19:06:41,383 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:41,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:06:41,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:06:41,384 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -105542376, now seen corresponding path program 1 times [2021-08-06 19:06:41,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:41,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559129050] [2021-08-06 19:06:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:41,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:41,445 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,446 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:41,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:41,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559129050] [2021-08-06 19:06:41,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559129050] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:41,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:41,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:06:41,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144081295] [2021-08-06 19:06:41,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:06:41,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:06:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:06:41,459 INFO L87 Difference]: Start difference. First operand 840 states and 1770 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:41,564 INFO L93 Difference]: Finished difference Result 712 states and 1322 transitions. [2021-08-06 19:06:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:06:41,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-06 19:06:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:41,567 INFO L225 Difference]: With dead ends: 712 [2021-08-06 19:06:41,567 INFO L226 Difference]: Without dead ends: 447 [2021-08-06 19:06:41,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:06:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-08-06 19:06:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-08-06 19:06:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 432 states have (on average 2.099537037037037) internal successors, (907), 446 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 907 transitions. [2021-08-06 19:06:41,580 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 907 transitions. Word has length 56 [2021-08-06 19:06:41,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:41,581 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 907 transitions. [2021-08-06 19:06:41,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 907 transitions. [2021-08-06 19:06:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 19:06:41,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:06:41,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:06:41,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:06:41,583 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:06:41,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:06:41,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1078628799, now seen corresponding path program 1 times [2021-08-06 19:06:41,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:06:41,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134995390] [2021-08-06 19:06:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:06:41,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:06:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:06:41,693 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,699 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:06:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:06:41,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:06:41,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134995390] [2021-08-06 19:06:41,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134995390] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:06:41,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:06:41,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:06:41,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847591804] [2021-08-06 19:06:41,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:06:41,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:06:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:06:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:06:41,714 INFO L87 Difference]: Start difference. First operand 447 states and 907 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) [2021-08-06 19:06:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:06:41,770 INFO L93 Difference]: Finished difference Result 189 states and 265 transitions. [2021-08-06 19:06:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:06:41,770 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 [2021-08-06 19:06:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:06:41,770 INFO L225 Difference]: With dead ends: 189 [2021-08-06 19:06:41,770 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:06:41,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:06:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:06:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:06:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:06:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:06:41,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-08-06 19:06:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:06:41,771 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:06:41,771 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) [2021-08-06 19:06:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:06:41,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:06:41,773 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:06:41,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:06:41,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:06:41,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:06:41,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:06:41,779 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:06:41,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:06:41,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:06:41 BasicIcfg [2021-08-06 19:06:41,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:06:41,786 INFO L168 Benchmark]: Toolchain (without parser) took 3712.84 ms. Allocated memory was 191.9 MB in the beginning and 273.7 MB in the end (delta: 81.8 MB). Free memory was 155.7 MB in the beginning and 133.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,786 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 191.9 MB. Free memory was 174.1 MB in the beginning and 174.0 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:06:41,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.57 ms. Allocated memory is still 191.9 MB. Free memory was 155.5 MB in the beginning and 165.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.13 ms. Allocated memory is still 191.9 MB. Free memory was 165.5 MB in the beginning and 163.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,793 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory is still 191.9 MB. Free memory was 163.8 MB in the beginning and 162.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,793 INFO L168 Benchmark]: RCFGBuilder took 490.24 ms. Allocated memory is still 191.9 MB. Free memory was 162.3 MB in the beginning and 138.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,794 INFO L168 Benchmark]: TraceAbstraction took 2871.67 ms. Allocated memory was 191.9 MB in the beginning and 273.7 MB in the end (delta: 81.8 MB). Free memory was 137.7 MB in the beginning and 133.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. [2021-08-06 19:06:41,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 191.9 MB. Free memory was 174.1 MB in the beginning and 174.0 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.57 ms. Allocated memory is still 191.9 MB. Free memory was 155.5 MB in the beginning and 165.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.13 ms. Allocated memory is still 191.9 MB. Free memory was 165.5 MB in the beginning and 163.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory is still 191.9 MB. Free memory was 163.8 MB in the beginning and 162.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.24 ms. Allocated memory is still 191.9 MB. Free memory was 162.3 MB in the beginning and 138.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2871.67 ms. Allocated memory was 191.9 MB in the beginning and 273.7 MB in the end (delta: 81.8 MB). Free memory was 137.7 MB in the beginning and 133.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18714, positive: 17852, positive conditional: 17852, positive unconditional: 0, negative: 862, negative conditional: 862, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18632, positive: 17852, positive conditional: 0, positive unconditional: 17852, negative: 780, negative conditional: 0, negative unconditional: 780, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 637, positive conditional: 0, positive unconditional: 637, 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: 658, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18632, positive: 17215, positive conditional: 0, positive unconditional: 17215, negative: 759, negative conditional: 0, negative unconditional: 759, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 637, Positive conditional cache size: 0, Positive unconditional cache size: 637, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 82 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2773.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 46.6ms, AutomataDifference: 990.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 474.6ms, PartialOrderReductionTime: 462.8ms, HoareTripleCheckerStatistics: 677 SDtfs, 826 SDslu, 1968 SDs, 0 SdLazy, 257 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 195.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 579.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 252.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 666 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.7ms SsaConstructionTime, 150.1ms SatisfiabilityAnalysisTime, 692.8ms InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 1005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 19:06:41,824 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...