/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/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:08:44,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:08:44,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:08:44,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:08:44,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:08:44,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:08:44,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:08:44,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:08:44,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:08:44,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:08:44,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:08:44,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:08:44,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:08:44,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:08:44,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:08:44,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:08:44,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:08:44,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:08:44,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:08:44,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:08:44,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:08:44,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:08:44,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:08:44,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:08:44,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:08:44,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:08:44,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:08:44,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:08:44,320 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 17:08:44,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:08:44,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:08:44,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:08:44,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:08:44,351 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:08:44,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:08:44,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:08:44,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:08:44,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:08:44,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:08:44,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:08:44,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:08:44,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:08:44,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:08:44,354 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:08:44,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:08:44,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:08:44,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:08:44,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:08:44,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:08:44,629 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:08:44,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-08-21 17:08:44,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ac8e75f/3efdc648611543b089730c46bb398cf9/FLAG643ef74a2 [2021-08-21 17:08:45,355 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:08:45,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-08-21 17:08:45,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ac8e75f/3efdc648611543b089730c46bb398cf9/FLAG643ef74a2 [2021-08-21 17:08:45,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ac8e75f/3efdc648611543b089730c46bb398cf9 [2021-08-21 17:08:45,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:08:45,684 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:08:45,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:08:45,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:08:45,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:08:45,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:08:45" (1/1) ... [2021-08-21 17:08:45,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be5a229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:45, skipping insertion in model container [2021-08-21 17:08:45,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:08:45" (1/1) ... [2021-08-21 17:08:45,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:08:45,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:08:45,856 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/safe009_pso.oepc.i[950,963] [2021-08-21 17:08:46,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:08:46,047 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:08:46,058 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/safe009_pso.oepc.i[950,963] [2021-08-21 17:08:46,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:08:46,117 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:08:46,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46 WrapperNode [2021-08-21 17:08:46,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:08:46,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:08:46,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:08:46,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:08:46,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:08:46,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:08:46,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:08:46,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:08:46,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:08:46,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:08:46,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:08:46,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:08:46,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (1/1) ... [2021-08-21 17:08:46,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:08:46,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:08:46,219 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 17:08:46,239 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 17:08:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:08:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:08:46,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:08:46,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:08:46,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:08:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:08:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:08:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:08:46,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:08:46,256 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 17:08:46,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:08:46,573 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:08:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:08:46 BoogieIcfgContainer [2021-08-21 17:08:46,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:08:46,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:08:46,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:08:46,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:08:46,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:08:45" (1/3) ... [2021-08-21 17:08:46,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:08:46, skipping insertion in model container [2021-08-21 17:08:46,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:46" (2/3) ... [2021-08-21 17:08:46,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:08:46, skipping insertion in model container [2021-08-21 17:08:46,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:08:46" (3/3) ... [2021-08-21 17:08:46,582 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2021-08-21 17:08:46,587 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:08:46,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:08:46,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:08:46,587 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:08:46,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,628 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:08:46,636 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:08:46,664 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:08:46,668 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 17:08:46,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:08:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 4823 states, 4032 states have (on average 1.9841269841269842) internal successors, (8000), 4822 states have internal predecessors, (8000), 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 17:08:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 17:08:47,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:47,173 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 17:08:47,173 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 17:08:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:47,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2137267374, now seen corresponding path program 1 times [2021-08-21 17:08:47,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:47,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771755400] [2021-08-21 17:08:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:47,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:47,507 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 17:08:47,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:47,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771755400] [2021-08-21 17:08:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771755400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:47,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:47,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:08:47,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367812957] [2021-08-21 17:08:47,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:08:47,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:08:47,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:08:47,532 INFO L87 Difference]: Start difference. First operand has 4823 states, 4032 states have (on average 1.9841269841269842) internal successors, (8000), 4822 states have internal predecessors, (8000), 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 17:08:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:47,698 INFO L93 Difference]: Finished difference Result 5495 states and 9186 transitions. [2021-08-21 17:08:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:08:47,699 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 17:08:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:47,738 INFO L225 Difference]: With dead ends: 5495 [2021-08-21 17:08:47,739 INFO L226 Difference]: Without dead ends: 1943 [2021-08-21 17:08:47,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:08:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-08-21 17:08:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1943. [2021-08-21 17:08:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1908 states have (on average 2.1373165618448637) internal successors, (4078), 1942 states have internal predecessors, (4078), 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 17:08:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 4078 transitions. [2021-08-21 17:08:47,818 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 4078 transitions. Word has length 48 [2021-08-21 17:08:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:47,818 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 4078 transitions. [2021-08-21 17:08:47,819 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 17:08:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 4078 transitions. [2021-08-21 17:08:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 17:08:47,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:47,822 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 17:08:47,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:08:47,822 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 17:08:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:47,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1568652371, now seen corresponding path program 1 times [2021-08-21 17:08:47,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:47,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452759894] [2021-08-21 17:08:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:47,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:48,001 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 17:08:48,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:48,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452759894] [2021-08-21 17:08:48,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452759894] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:48,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:48,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:08:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673434998] [2021-08-21 17:08:48,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:08:48,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:08:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:08:48,004 INFO L87 Difference]: Start difference. First operand 1943 states and 4078 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:08:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:48,169 INFO L93 Difference]: Finished difference Result 2593 states and 5550 transitions. [2021-08-21 17:08:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:08:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:08:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:48,174 INFO L225 Difference]: With dead ends: 2593 [2021-08-21 17:08:48,174 INFO L226 Difference]: Without dead ends: 1187 [2021-08-21 17:08:48,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:08:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-08-21 17:08:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2021-08-21 17:08:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1167 states have (on average 2.1473864610111395) internal successors, (2506), 1186 states have internal predecessors, (2506), 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 17:08:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2506 transitions. [2021-08-21 17:08:48,196 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2506 transitions. Word has length 50 [2021-08-21 17:08:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:48,196 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2506 transitions. [2021-08-21 17:08:48,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:08:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2506 transitions. [2021-08-21 17:08:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:08:48,199 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:48,199 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 17:08:48,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:08:48,199 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 17:08:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:48,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1053585956, now seen corresponding path program 1 times [2021-08-21 17:08:48,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:48,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318230483] [2021-08-21 17:08:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:48,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:48,302 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 17:08:48,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:48,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318230483] [2021-08-21 17:08:48,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318230483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:48,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:48,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:08:48,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008804882] [2021-08-21 17:08:48,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:08:48,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:08:48,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:08:48,309 INFO L87 Difference]: Start difference. First operand 1187 states and 2506 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 17:08:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:48,449 INFO L93 Difference]: Finished difference Result 1537 states and 3474 transitions. [2021-08-21 17:08:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:08:48,450 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 17:08:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:48,453 INFO L225 Difference]: With dead ends: 1537 [2021-08-21 17:08:48,453 INFO L226 Difference]: Without dead ends: 617 [2021-08-21 17:08:48,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:08:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-08-21 17:08:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-08-21 17:08:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 597 states have (on average 2.47571189279732) internal successors, (1478), 616 states have internal predecessors, (1478), 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 17:08:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1478 transitions. [2021-08-21 17:08:48,463 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1478 transitions. Word has length 53 [2021-08-21 17:08:48,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:48,464 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 1478 transitions. [2021-08-21 17:08:48,464 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 17:08:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1478 transitions. [2021-08-21 17:08:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-21 17:08:48,465 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:48,466 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 17:08:48,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:08:48,466 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 17:08:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1663102233, now seen corresponding path program 1 times [2021-08-21 17:08:48,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:48,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124699245] [2021-08-21 17:08:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:48,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:48,579 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 17:08:48,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124699245] [2021-08-21 17:08:48,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124699245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:48,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:48,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:08:48,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105747777] [2021-08-21 17:08:48,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:08:48,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:48,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:08:48,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:08:48,582 INFO L87 Difference]: Start difference. First operand 617 states and 1478 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) [2021-08-21 17:08:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:48,695 INFO L93 Difference]: Finished difference Result 760 states and 1810 transitions. [2021-08-21 17:08:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:08:48,695 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 [2021-08-21 17:08:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:48,697 INFO L225 Difference]: With dead ends: 760 [2021-08-21 17:08:48,698 INFO L226 Difference]: Without dead ends: 560 [2021-08-21 17:08:48,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:08:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-08-21 17:08:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-08-21 17:08:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 540 states have (on average 2.509259259259259) internal successors, (1355), 559 states have internal predecessors, (1355), 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 17:08:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1355 transitions. [2021-08-21 17:08:48,706 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1355 transitions. Word has length 55 [2021-08-21 17:08:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:48,707 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1355 transitions. [2021-08-21 17:08:48,707 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) [2021-08-21 17:08:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1355 transitions. [2021-08-21 17:08:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:08:48,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:48,708 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 17:08:48,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:08:48,708 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 17:08:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:48,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1418772643, now seen corresponding path program 1 times [2021-08-21 17:08:48,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:48,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439595044] [2021-08-21 17:08:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:48,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:48,822 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 17:08:48,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:48,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439595044] [2021-08-21 17:08:48,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439595044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:48,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:48,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:08:48,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409038570] [2021-08-21 17:08:48,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:08:48,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:08:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:08:48,824 INFO L87 Difference]: Start difference. First operand 560 states and 1355 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) [2021-08-21 17:08:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:48,917 INFO L93 Difference]: Finished difference Result 584 states and 1328 transitions. [2021-08-21 17:08:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:08:48,918 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 [2021-08-21 17:08:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:48,920 INFO L225 Difference]: With dead ends: 584 [2021-08-21 17:08:48,920 INFO L226 Difference]: Without dead ends: 418 [2021-08-21 17:08:48,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:08:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-08-21 17:08:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-08-21 17:08:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 400 states have (on average 2.3125) internal successors, (925), 417 states have internal predecessors, (925), 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 17:08:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 925 transitions. [2021-08-21 17:08:48,927 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 925 transitions. Word has length 56 [2021-08-21 17:08:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:48,927 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 925 transitions. [2021-08-21 17:08:48,928 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) [2021-08-21 17:08:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 925 transitions. [2021-08-21 17:08:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:08:48,929 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:48,929 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 17:08:48,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:08:48,929 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 17:08:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 751816100, now seen corresponding path program 1 times [2021-08-21 17:08:48,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:48,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997939727] [2021-08-21 17:08:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:48,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:49,047 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 17:08:49,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:49,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997939727] [2021-08-21 17:08:49,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997939727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:49,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:49,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:08:49,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456675934] [2021-08-21 17:08:49,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:08:49,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:08:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:08:49,053 INFO L87 Difference]: Start difference. First operand 418 states and 925 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 17:08:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:49,165 INFO L93 Difference]: Finished difference Result 310 states and 611 transitions. [2021-08-21 17:08:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:08:49,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 17:08:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:49,167 INFO L225 Difference]: With dead ends: 310 [2021-08-21 17:08:49,167 INFO L226 Difference]: Without dead ends: 193 [2021-08-21 17:08:49,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:08:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-08-21 17:08:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-08-21 17:08:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 184 states have (on average 1.8423913043478262) internal successors, (339), 192 states have internal predecessors, (339), 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 17:08:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 339 transitions. [2021-08-21 17:08:49,171 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 339 transitions. Word has length 57 [2021-08-21 17:08:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:49,172 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 339 transitions. [2021-08-21 17:08:49,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 17:08:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 339 transitions. [2021-08-21 17:08:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 17:08:49,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:08:49,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:08:49,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:08:49,172 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 17:08:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:08:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash 765329027, now seen corresponding path program 1 times [2021-08-21 17:08:49,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:08:49,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871989704] [2021-08-21 17:08:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:08:49,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:08:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:08:49,275 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 17:08:49,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:08:49,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871989704] [2021-08-21 17:08:49,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871989704] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:08:49,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:08:49,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:08:49,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926275746] [2021-08-21 17:08:49,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:08:49,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:08:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:08:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:08:49,277 INFO L87 Difference]: Start difference. First operand 193 states and 339 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:08:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:08:49,323 INFO L93 Difference]: Finished difference Result 157 states and 279 transitions. [2021-08-21 17:08:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:08:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-21 17:08:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:08:49,324 INFO L225 Difference]: With dead ends: 157 [2021-08-21 17:08:49,324 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:08:49,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:08:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:08:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:08:49,324 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 17:08:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:08:49,324 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-21 17:08:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:08:49,324 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:08:49,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:08:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:08:49,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:08:49,326 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:08:49,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:08:49,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:08:49,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:08:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:08:49,329 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:08:49,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:08:49,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:08:49 BasicIcfg [2021-08-21 17:08:49,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:08:49,332 INFO L168 Benchmark]: Toolchain (without parser) took 3647.03 ms. Allocated memory was 190.8 MB in the beginning and 267.4 MB in the end (delta: 76.5 MB). Free memory was 154.1 MB in the beginning and 207.0 MB in the end (delta: -52.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,332 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 190.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:08:49,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.36 ms. Allocated memory is still 190.8 MB. Free memory was 153.9 MB in the beginning and 163.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 190.8 MB. Free memory was 163.4 MB in the beginning and 161.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,339 INFO L168 Benchmark]: Boogie Preprocessor took 27.77 ms. Allocated memory is still 190.8 MB. Free memory was 161.3 MB in the beginning and 160.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,343 INFO L168 Benchmark]: RCFGBuilder took 379.95 ms. Allocated memory is still 190.8 MB. Free memory was 160.3 MB in the beginning and 136.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,343 INFO L168 Benchmark]: TraceAbstraction took 2753.52 ms. Allocated memory was 190.8 MB in the beginning and 267.4 MB in the end (delta: 76.5 MB). Free memory was 136.1 MB in the beginning and 207.0 MB in the end (delta: -70.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2021-08-21 17:08:49,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 190.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 432.36 ms. Allocated memory is still 190.8 MB. Free memory was 153.9 MB in the beginning and 163.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 190.8 MB. Free memory was 163.4 MB in the beginning and 161.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.77 ms. Allocated memory is still 190.8 MB. Free memory was 161.3 MB in the beginning and 160.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 379.95 ms. Allocated memory is still 190.8 MB. Free memory was 160.3 MB in the beginning and 136.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2753.52 ms. Allocated memory was 190.8 MB in the beginning and 267.4 MB in the end (delta: 76.5 MB). Free memory was 136.1 MB in the beginning and 207.0 MB in the end (delta: -70.8 MB). Peak memory consumption was 6.8 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: 15333, positive: 14767, positive conditional: 14767, positive unconditional: 0, negative: 566, negative conditional: 566, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15260, positive: 14767, positive conditional: 0, positive unconditional: 14767, negative: 493, negative conditional: 0, negative unconditional: 493, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 614, positive: 597, positive conditional: 0, positive unconditional: 597, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 614, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15260, positive: 14170, positive conditional: 0, positive unconditional: 14170, negative: 476, negative conditional: 0, negative unconditional: 476, unknown: 614, unknown conditional: 0, unknown unconditional: 614] , Statistics on independence cache: Total cache size (in pairs): 614, Positive cache size: 597, Positive conditional cache size: 0, Positive unconditional cache size: 597, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Independence queries for same thread: 73 - 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, 104 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2665.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 37.7ms, AutomataDifference: 923.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 473.6ms, PartialOrderReductionTime: 462.7ms, HoareTripleCheckerStatistics: 597 SDtfs, 795 SDslu, 1759 SDs, 0 SdLazy, 235 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 649.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4823occurred in iteration=0, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 118.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.4ms SsaConstructionTime, 170.5ms SatisfiabilityAnalysisTime, 766.9ms InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 1007 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! [2021-08-21 17:08:49,373 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...