/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/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:04:32,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:04:32,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:04:32,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:04:32,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:04:32,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:04:32,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:04:32,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:04:32,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:04:32,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:04:32,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:04:32,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:04:32,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:04:32,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:04:32,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:04:32,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:04:32,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:04:32,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:04:32,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:04:32,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:04:32,132 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 19:04:32,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:04:32,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:04:32,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:04:32,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:04:32,154 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:04:32,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:04:32,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:04:32,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:04:32,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:04:32,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:04:32,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:04:32,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:04:32,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:04:32,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:04:32,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:04:32,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:32,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:04:32,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:04:32,158 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:04:32,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:04:32,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:04:32,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:04:32,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:04:32,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:04:32,483 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:04:32,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-08-06 19:04:32,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56d3965/2a8e0a3f3b864794b33c9d47d0c6f482/FLAGfce9166f6 [2021-08-06 19:04:33,119 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:04:33,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-08-06 19:04:33,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56d3965/2a8e0a3f3b864794b33c9d47d0c6f482/FLAGfce9166f6 [2021-08-06 19:04:33,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56d3965/2a8e0a3f3b864794b33c9d47d0c6f482 [2021-08-06 19:04:33,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:04:33,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:04:33,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:33,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:04:33,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:04:33,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:33" (1/1) ... [2021-08-06 19:04:33,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46475341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:33, skipping insertion in model container [2021-08-06 19:04:33,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:33" (1/1) ... [2021-08-06 19:04:33,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:04:33,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:04:33,820 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/safe018_pso.oepc.i[950,963] [2021-08-06 19:04:33,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:33,993 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:04:34,005 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/safe018_pso.oepc.i[950,963] [2021-08-06 19:04:34,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:34,087 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:04:34,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34 WrapperNode [2021-08-06 19:04:34,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:34,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:34,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:04:34,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:04:34,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:34,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:04:34,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:04:34,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:04:34,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:04:34,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:04:34,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:04:34,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:04:34,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (1/1) ... [2021-08-06 19:04:34,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:34,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:04:34,220 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 19:04:34,224 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 19:04:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:04:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:04:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:04:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:04:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:04:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:04:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:04:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:04:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:04:34,258 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 19:04:34,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:04:34,677 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:04:34,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:34 BoogieIcfgContainer [2021-08-06 19:04:34,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:04:34,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:04:34,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:04:34,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:04:34,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:04:33" (1/3) ... [2021-08-06 19:04:34,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c43920d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:34, skipping insertion in model container [2021-08-06 19:04:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:34" (2/3) ... [2021-08-06 19:04:34,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c43920d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:34, skipping insertion in model container [2021-08-06 19:04:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:34" (3/3) ... [2021-08-06 19:04:34,688 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-08-06 19:04:34,693 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:04:34,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:04:34,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:04:34,693 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:04:34,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,732 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,739 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,745 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,750 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,750 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:34,757 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:04:34,803 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:04:34,808 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 19:04:34,809 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 19:04:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 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 19:04:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-06 19:04:35,287 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:35,287 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] [2021-08-06 19:04:35,288 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 19:04:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:35,293 INFO L82 PathProgramCache]: Analyzing trace with hash -604234348, now seen corresponding path program 1 times [2021-08-06 19:04:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:35,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647010157] [2021-08-06 19:04:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:35,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:35,608 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 19:04:35,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:35,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647010157] [2021-08-06 19:04:35,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647010157] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:35,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:35,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:35,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296952516] [2021-08-06 19:04:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:35,638 INFO L87 Difference]: Start difference. First operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 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 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 19:04:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:35,839 INFO L93 Difference]: Finished difference Result 5447 states and 9218 transitions. [2021-08-06 19:04:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2021-08-06 19:04:35,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:35,875 INFO L225 Difference]: With dead ends: 5447 [2021-08-06 19:04:35,876 INFO L226 Difference]: Without dead ends: 2138 [2021-08-06 19:04:35,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-08-06 19:04:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2021-08-06 19:04:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2096 states have (on average 2.1479007633587788) internal successors, (4502), 2137 states have internal predecessors, (4502), 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 19:04:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 4502 transitions. [2021-08-06 19:04:36,040 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 4502 transitions. Word has length 49 [2021-08-06 19:04:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 4502 transitions. [2021-08-06 19:04:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 19:04:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 4502 transitions. [2021-08-06 19:04:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-06 19:04:36,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:36,047 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 19:04:36,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:04:36,050 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 19:04:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1189455371, now seen corresponding path program 1 times [2021-08-06 19:04:36,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:36,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888067964] [2021-08-06 19:04:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:36,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:36,262 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 19:04:36,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:36,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888067964] [2021-08-06 19:04:36,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888067964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:36,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:36,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:36,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274189966] [2021-08-06 19:04:36,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:36,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:36,265 INFO L87 Difference]: Start difference. First operand 2138 states and 4502 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 19:04:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:36,387 INFO L93 Difference]: Finished difference Result 2402 states and 5294 transitions. [2021-08-06 19:04:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:36,388 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 19:04:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:36,396 INFO L225 Difference]: With dead ends: 2402 [2021-08-06 19:04:36,397 INFO L226 Difference]: Without dead ends: 1688 [2021-08-06 19:04:36,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-08-06 19:04:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2021-08-06 19:04:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1658 states have (on average 2.209891435464415) internal successors, (3664), 1687 states have internal predecessors, (3664), 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 19:04:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3664 transitions. [2021-08-06 19:04:36,440 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3664 transitions. Word has length 51 [2021-08-06 19:04:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:36,440 INFO L470 AbstractCegarLoop]: Abstraction has 1688 states and 3664 transitions. [2021-08-06 19:04:36,441 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 19:04:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3664 transitions. [2021-08-06 19:04:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 19:04:36,446 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:36,446 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] [2021-08-06 19:04:36,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:04:36,447 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 19:04:36,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:36,448 INFO L82 PathProgramCache]: Analyzing trace with hash -377331530, now seen corresponding path program 1 times [2021-08-06 19:04:36,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:36,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986339230] [2021-08-06 19:04:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:36,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:36,616 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 19:04:36,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:36,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986339230] [2021-08-06 19:04:36,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986339230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:36,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:36,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:36,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935110973] [2021-08-06 19:04:36,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:36,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:36,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:36,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:36,618 INFO L87 Difference]: Start difference. First operand 1688 states and 3664 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) [2021-08-06 19:04:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:36,785 INFO L93 Difference]: Finished difference Result 2228 states and 4876 transitions. [2021-08-06 19:04:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:36,786 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 [2021-08-06 19:04:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:36,790 INFO L225 Difference]: With dead ends: 2228 [2021-08-06 19:04:36,791 INFO L226 Difference]: Without dead ends: 968 [2021-08-06 19:04:36,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-06 19:04:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-08-06 19:04:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-08-06 19:04:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 938 states have (on average 2.192963752665245) internal successors, (2057), 967 states have internal predecessors, (2057), 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 19:04:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2057 transitions. [2021-08-06 19:04:36,815 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2057 transitions. Word has length 53 [2021-08-06 19:04:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:36,816 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 2057 transitions. [2021-08-06 19:04:36,816 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) [2021-08-06 19:04:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2057 transitions. [2021-08-06 19:04:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 19:04:36,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:36,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:36,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:04:36,819 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 19:04:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1165642425, now seen corresponding path program 1 times [2021-08-06 19:04:36,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:36,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7312837] [2021-08-06 19:04:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:36,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:36,968 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 19:04:36,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:36,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7312837] [2021-08-06 19:04:36,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7312837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:36,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:36,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:36,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665404583] [2021-08-06 19:04:36,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:36,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:36,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:36,975 INFO L87 Difference]: Start difference. First operand 968 states and 2057 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:37,133 INFO L93 Difference]: Finished difference Result 1356 states and 3024 transitions. [2021-08-06 19:04:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-06 19:04:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:37,138 INFO L225 Difference]: With dead ends: 1356 [2021-08-06 19:04:37,138 INFO L226 Difference]: Without dead ends: 672 [2021-08-06 19:04:37,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-06 19:04:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-08-06 19:04:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-08-06 19:04:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 652 states have (on average 2.26840490797546) internal successors, (1479), 671 states have internal predecessors, (1479), 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 19:04:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1479 transitions. [2021-08-06 19:04:37,156 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1479 transitions. Word has length 54 [2021-08-06 19:04:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:37,156 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 1479 transitions. [2021-08-06 19:04:37,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1479 transitions. [2021-08-06 19:04:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 19:04:37,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:37,159 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 19:04:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:04:37,159 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 19:04:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 216582408, now seen corresponding path program 1 times [2021-08-06 19:04:37,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:37,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434436088] [2021-08-06 19:04:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:37,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:37,294 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,301 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,318 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 19:04:37,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434436088] [2021-08-06 19:04:37,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434436088] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:37,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:37,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:37,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062434217] [2021-08-06 19:04:37,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:37,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:37,320 INFO L87 Difference]: Start difference. First operand 672 states and 1479 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:37,421 INFO L93 Difference]: Finished difference Result 851 states and 1853 transitions. [2021-08-06 19:04:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-06 19:04:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:37,425 INFO L225 Difference]: With dead ends: 851 [2021-08-06 19:04:37,425 INFO L226 Difference]: Without dead ends: 615 [2021-08-06 19:04:37,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 72.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-08-06 19:04:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-08-06 19:04:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 595 states have (on average 2.2890756302521007) internal successors, (1362), 614 states have internal predecessors, (1362), 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 19:04:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1362 transitions. [2021-08-06 19:04:37,439 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1362 transitions. Word has length 56 [2021-08-06 19:04:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:37,439 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1362 transitions. [2021-08-06 19:04:37,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1362 transitions. [2021-08-06 19:04:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-06 19:04:37,441 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:37,441 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] [2021-08-06 19:04:37,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:04:37,441 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 19:04:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1439074754, now seen corresponding path program 1 times [2021-08-06 19:04:37,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:37,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243071673] [2021-08-06 19:04:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:37,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:37,533 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,534 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,560 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 19:04:37,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:37,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243071673] [2021-08-06 19:04:37,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243071673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:37,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:37,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:37,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525416531] [2021-08-06 19:04:37,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:37,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:37,562 INFO L87 Difference]: Start difference. First operand 615 states and 1362 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:37,681 INFO L93 Difference]: Finished difference Result 630 states and 1350 transitions. [2021-08-06 19:04:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-06 19:04:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:37,683 INFO L225 Difference]: With dead ends: 630 [2021-08-06 19:04:37,684 INFO L226 Difference]: Without dead ends: 428 [2021-08-06 19:04:37,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:04:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-06 19:04:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-08-06 19:04:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 410 states have (on average 2.2219512195121953) internal successors, (911), 427 states have internal predecessors, (911), 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 19:04:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 911 transitions. [2021-08-06 19:04:37,693 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 911 transitions. Word has length 57 [2021-08-06 19:04:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:37,694 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 911 transitions. [2021-08-06 19:04:37,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 911 transitions. [2021-08-06 19:04:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 19:04:37,695 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:37,695 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 19:04:37,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:04:37,695 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 19:04:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1306651426, now seen corresponding path program 1 times [2021-08-06 19:04:37,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:37,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714138325] [2021-08-06 19:04:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:37,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:37,791 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,795 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:37,810 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 19:04:37,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:37,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714138325] [2021-08-06 19:04:37,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714138325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:37,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:37,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:37,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119954220] [2021-08-06 19:04:37,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:37,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:37,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:37,812 INFO L87 Difference]: Start difference. First operand 428 states and 911 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 19:04:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:37,939 INFO L93 Difference]: Finished difference Result 320 states and 621 transitions. [2021-08-06 19:04:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:04:37,940 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 19:04:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:37,941 INFO L225 Difference]: With dead ends: 320 [2021-08-06 19:04:37,941 INFO L226 Difference]: Without dead ends: 203 [2021-08-06 19:04:37,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-06 19:04:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-08-06 19:04:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 1.7989690721649485) internal successors, (349), 202 states have internal predecessors, (349), 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 19:04:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 349 transitions. [2021-08-06 19:04:37,945 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 349 transitions. Word has length 58 [2021-08-06 19:04:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:37,946 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 349 transitions. [2021-08-06 19:04:37,946 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 19:04:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 349 transitions. [2021-08-06 19:04:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 19:04:37,946 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:37,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:37,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:04:37,947 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:37,947 INFO L82 PathProgramCache]: Analyzing trace with hash 522667295, now seen corresponding path program 1 times [2021-08-06 19:04:37,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:37,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388882844] [2021-08-06 19:04:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:37,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:38,034 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 19:04:38,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:38,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388882844] [2021-08-06 19:04:38,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388882844] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:38,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:38,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:38,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675034150] [2021-08-06 19:04:38,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:38,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:38,036 INFO L87 Difference]: Start difference. First operand 203 states and 349 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:38,107 INFO L93 Difference]: Finished difference Result 167 states and 289 transitions. [2021-08-06 19:04:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:04:38,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-06 19:04:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:38,108 INFO L225 Difference]: With dead ends: 167 [2021-08-06 19:04:38,108 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:04:38,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:04:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:04:38,109 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 19:04:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:04:38,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-08-06 19:04:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:38,109 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:04:38,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:04:38,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:04:38,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:04:38,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:04:38,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:04:38,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:04:38,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:04:38,117 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:04:38,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:04:38,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:04:38 BasicIcfg [2021-08-06 19:04:38,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:04:38,120 INFO L168 Benchmark]: Toolchain (without parser) took 4587.97 ms. Allocated memory was 194.0 MB in the beginning and 289.4 MB in the end (delta: 95.4 MB). Free memory was 156.8 MB in the beginning and 150.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 103.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,120 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 194.0 MB. Free memory is still 175.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:04:38,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.51 ms. Allocated memory is still 194.0 MB. Free memory was 156.5 MB in the beginning and 167.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.90 ms. Allocated memory is still 194.0 MB. Free memory was 167.1 MB in the beginning and 165.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,120 INFO L168 Benchmark]: Boogie Preprocessor took 32.78 ms. Allocated memory is still 194.0 MB. Free memory was 165.0 MB in the beginning and 163.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,125 INFO L168 Benchmark]: RCFGBuilder took 493.59 ms. Allocated memory is still 194.0 MB. Free memory was 163.9 MB in the beginning and 139.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,125 INFO L168 Benchmark]: TraceAbstraction took 3436.12 ms. Allocated memory was 194.0 MB in the beginning and 289.4 MB in the end (delta: 95.4 MB). Free memory was 139.3 MB in the beginning and 150.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:38,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 194.0 MB. Free memory is still 175.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.51 ms. Allocated memory is still 194.0 MB. Free memory was 156.5 MB in the beginning and 167.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.90 ms. Allocated memory is still 194.0 MB. Free memory was 167.1 MB in the beginning and 165.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.78 ms. Allocated memory is still 194.0 MB. Free memory was 165.0 MB in the beginning and 163.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 493.59 ms. Allocated memory is still 194.0 MB. Free memory was 163.9 MB in the beginning and 139.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3436.12 ms. Allocated memory was 194.0 MB in the beginning and 289.4 MB in the end (delta: 95.4 MB). Free memory was 139.3 MB in the beginning and 150.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 85.5 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: 15504, positive: 15015, positive conditional: 15015, positive unconditional: 0, negative: 489, negative conditional: 489, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15435, positive: 15015, positive conditional: 0, positive unconditional: 15015, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 616, positive: 602, positive conditional: 0, positive unconditional: 602, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 616, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15435, positive: 14413, positive conditional: 0, positive unconditional: 14413, negative: 406, negative conditional: 0, negative unconditional: 406, unknown: 616, unknown conditional: 0, unknown unconditional: 616] , Statistics on independence cache: Total cache size (in pairs): 616, Positive cache size: 602, Positive conditional cache size: 0, Positive unconditional cache size: 602, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 69 - 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, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3313.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 53.9ms, AutomataDifference: 1168.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 441.7ms, PartialOrderReductionTime: 427.5ms, HoareTripleCheckerStatistics: 691 SDtfs, 897 SDslu, 2141 SDs, 0 SdLazy, 285 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 226.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 794.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4775occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 261.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.2ms SsaConstructionTime, 181.5ms SatisfiabilityAnalysisTime, 994.2ms InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 19:04:38,166 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...