/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:50:27,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:50:27,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:50:27,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:50:27,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:50:27,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:50:27,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:50:27,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:50:27,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:50:27,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:50:27,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:50:27,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:50:27,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:50:27,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:50:27,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:50:27,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:50:27,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:50:27,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:50:27,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:50:27,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:50:27,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:50:27,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:50:27,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:50:27,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:50:27,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 15:50:28,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:50:28,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:50:28,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:50:28,015 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 [2021-06-16 15:50:28,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:50:28,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:50:28,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:50:28,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:50:28,038 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:50:28,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:50:28,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:50:28,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:50:28,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:50:28,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:50:28,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:50:28,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:50:28,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:50:28,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:50:28,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:50:28,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:50:28,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:50:28,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:50:28,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:50:28,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:50:28,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:50:28,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:50:28,042 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:50:28,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:50:28,042 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:50:28,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:50:28,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:50:28,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:50:28,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:50:28,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:50:28,387 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:50:28,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-06-16 15:50:28,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65404a158/7554425b7d58482abffb68e79c6efdff/FLAGa23e4a0d9 [2021-06-16 15:50:28,970 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:50:28,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-06-16 15:50:28,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65404a158/7554425b7d58482abffb68e79c6efdff/FLAGa23e4a0d9 [2021-06-16 15:50:29,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65404a158/7554425b7d58482abffb68e79c6efdff [2021-06-16 15:50:29,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:50:29,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:50:29,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:50:29,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:50:29,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:50:29,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c0f87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29, skipping insertion in model container [2021-06-16 15:50:29,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:50:29,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:50:29,487 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i[950,963] [2021-06-16 15:50:29,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:50:29,716 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:50:29,727 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i[950,963] [2021-06-16 15:50:29,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:50:29,844 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:50:29,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29 WrapperNode [2021-06-16 15:50:29,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:50:29,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:50:29,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:50:29,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:50:29,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:50:29,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:50:29,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:50:29,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:50:29,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... [2021-06-16 15:50:29,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:50:29,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:50:29,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:50:29,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:50:29,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:50:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:50:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:50:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:50:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:50:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:50:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:50:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:50:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:50:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:50:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:50:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:50:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:50:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:50:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:50:29,992 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:50:30,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:50:30,394 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:50:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:50:30 BoogieIcfgContainer [2021-06-16 15:50:30,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:50:30,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:50:30,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:50:30,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:50:30,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:50:29" (1/3) ... [2021-06-16 15:50:30,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70334e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:50:30, skipping insertion in model container [2021-06-16 15:50:30,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:50:29" (2/3) ... [2021-06-16 15:50:30,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70334e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:50:30, skipping insertion in model container [2021-06-16 15:50:30,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:50:30" (3/3) ... [2021-06-16 15:50:30,406 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2021-06-16 15:50:30,411 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:50:30,411 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:50:30,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:50:30,412 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:50:30,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,446 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,446 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,451 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,451 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,452 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,452 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,456 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,456 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:50:30,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:50:30,485 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:50:30,513 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:50:30,513 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:50:30,514 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:50:30,514 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:50:30,514 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:50:30,514 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:50:30,514 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:50:30,514 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:50:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 8009 states have (on average 2.3638406792358597) internal successors, (18932), 9330 states have internal predecessors, (18932), 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) [2021-06-16 15:50:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 15:50:31,567 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:31,568 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:50:31,568 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:31,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2015733592, now seen corresponding path program 1 times [2021-06-16 15:50:31,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:31,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736782182] [2021-06-16 15:50:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:31,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:31,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:31,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:31,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:31,924 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:50:31,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:50:31,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:31,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:31,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:31,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:31,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:31,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:31,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:31,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736782182] [2021-06-16 15:50:31,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736782182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:31,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:31,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:50:31,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646223524] [2021-06-16 15:50:31,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:50:31,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:32,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:50:32,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:50:32,029 INFO L87 Difference]: Start difference. First operand has 9331 states, 8009 states have (on average 2.3638406792358597) internal successors, (18932), 9330 states have internal predecessors, (18932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:32,293 INFO L93 Difference]: Finished difference Result 11438 states and 23297 transitions. [2021-06-16 15:50:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:50:32,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 15:50:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:32,339 INFO L225 Difference]: With dead ends: 11438 [2021-06-16 15:50:32,340 INFO L226 Difference]: Without dead ends: 2269 [2021-06-16 15:50:32,340 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-06-16 15:50:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2269. [2021-06-16 15:50:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2241 states have (on average 2.2396251673360106) internal successors, (5019), 2268 states have internal predecessors, (5019), 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) [2021-06-16 15:50:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 5019 transitions. [2021-06-16 15:50:32,517 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 5019 transitions. Word has length 48 [2021-06-16 15:50:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:32,518 INFO L482 AbstractCegarLoop]: Abstraction has 2269 states and 5019 transitions. [2021-06-16 15:50:32,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 5019 transitions. [2021-06-16 15:50:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-16 15:50:32,522 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:32,523 INFO L472 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] [2021-06-16 15:50:32,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:50:32,523 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash 329422279, now seen corresponding path program 1 times [2021-06-16 15:50:32,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:32,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421138590] [2021-06-16 15:50:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:32,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:32,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:32,668 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:50:32,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:50:32,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:32,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:32,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:32,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:32,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:32,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:32,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:32,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421138590] [2021-06-16 15:50:32,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421138590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:32,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:32,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:50:32,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491399417] [2021-06-16 15:50:32,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:50:32,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:32,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:50:32,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:50:32,712 INFO L87 Difference]: Start difference. First operand 2269 states and 5019 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) [2021-06-16 15:50:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:32,833 INFO L93 Difference]: Finished difference Result 2685 states and 6115 transitions. [2021-06-16 15:50:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:50:32,834 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 [2021-06-16 15:50:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:32,846 INFO L225 Difference]: With dead ends: 2685 [2021-06-16 15:50:32,847 INFO L226 Difference]: Without dead ends: 2125 [2021-06-16 15:50:32,849 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-06-16 15:50:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2021-06-16 15:50:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2097 states have (on average 2.2217453505007154) internal successors, (4659), 2124 states have internal predecessors, (4659), 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) [2021-06-16 15:50:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 4659 transitions. [2021-06-16 15:50:32,909 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 4659 transitions. Word has length 51 [2021-06-16 15:50:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:32,910 INFO L482 AbstractCegarLoop]: Abstraction has 2125 states and 4659 transitions. [2021-06-16 15:50:32,910 INFO L483 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) [2021-06-16 15:50:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 4659 transitions. [2021-06-16 15:50:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 15:50:32,951 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:32,951 INFO L472 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] [2021-06-16 15:50:32,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:50:32,952 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2043843144, now seen corresponding path program 1 times [2021-06-16 15:50:32,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:32,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942831269] [2021-06-16 15:50:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:33,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:33,055 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:50:33,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:50:33,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:33,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:33,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:33,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:33,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942831269] [2021-06-16 15:50:33,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942831269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:33,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:33,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:50:33,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133680057] [2021-06-16 15:50:33,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:50:33,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:33,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:50:33,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:50:33,099 INFO L87 Difference]: Start difference. First operand 2125 states and 4659 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:33,241 INFO L93 Difference]: Finished difference Result 3171 states and 7443 transitions. [2021-06-16 15:50:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:50:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-16 15:50:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:33,252 INFO L225 Difference]: With dead ends: 3171 [2021-06-16 15:50:33,252 INFO L226 Difference]: Without dead ends: 1709 [2021-06-16 15:50:33,252 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-06-16 15:50:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2021-06-16 15:50:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1681 states have (on average 2.2558001189767993) internal successors, (3792), 1708 states have internal predecessors, (3792), 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) [2021-06-16 15:50:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 3792 transitions. [2021-06-16 15:50:33,298 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 3792 transitions. Word has length 53 [2021-06-16 15:50:33,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:33,300 INFO L482 AbstractCegarLoop]: Abstraction has 1709 states and 3792 transitions. [2021-06-16 15:50:33,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 3792 transitions. [2021-06-16 15:50:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:50:33,304 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:33,304 INFO L472 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] [2021-06-16 15:50:33,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:50:33,304 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash 423306552, now seen corresponding path program 1 times [2021-06-16 15:50:33,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:33,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107097746] [2021-06-16 15:50:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:33,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:33,391 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:50:33,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:50:33,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:33,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:33,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:33,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:33,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107097746] [2021-06-16 15:50:33,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107097746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:33,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:33,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:50:33,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807099523] [2021-06-16 15:50:33,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:50:33,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:50:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:50:33,438 INFO L87 Difference]: Start difference. First operand 1709 states and 3792 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:33,544 INFO L93 Difference]: Finished difference Result 2531 states and 5967 transitions. [2021-06-16 15:50:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:50:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-16 15:50:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:33,553 INFO L225 Difference]: With dead ends: 2531 [2021-06-16 15:50:33,553 INFO L226 Difference]: Without dead ends: 1652 [2021-06-16 15:50:33,554 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-06-16 15:50:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1372. [2021-06-16 15:50:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1352 states have (on average 2.206360946745562) internal successors, (2983), 1371 states have internal predecessors, (2983), 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) [2021-06-16 15:50:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2983 transitions. [2021-06-16 15:50:33,629 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2983 transitions. Word has length 54 [2021-06-16 15:50:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:33,630 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 2983 transitions. [2021-06-16 15:50:33,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2983 transitions. [2021-06-16 15:50:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-16 15:50:33,634 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:33,634 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:50:33,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:50:33,634 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash 716796745, now seen corresponding path program 1 times [2021-06-16 15:50:33,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:33,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809589444] [2021-06-16 15:50:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:33,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:33,723 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:50:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:50:33,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:50:33,750 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:50:33,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:33,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:33,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:33,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:33,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809589444] [2021-06-16 15:50:33,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809589444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:33,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:33,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:50:33,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917507742] [2021-06-16 15:50:33,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:50:33,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:33,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:50:33,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:50:33,765 INFO L87 Difference]: Start difference. First operand 1372 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:33,884 INFO L93 Difference]: Finished difference Result 1756 states and 3728 transitions. [2021-06-16 15:50:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:50:33,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-16 15:50:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:33,892 INFO L225 Difference]: With dead ends: 1756 [2021-06-16 15:50:33,892 INFO L226 Difference]: Without dead ends: 1228 [2021-06-16 15:50:33,893 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-06-16 15:50:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2021-06-16 15:50:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1208 states have (on average 2.2036423841059603) internal successors, (2662), 1227 states have internal predecessors, (2662), 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) [2021-06-16 15:50:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 2662 transitions. [2021-06-16 15:50:33,930 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 2662 transitions. Word has length 55 [2021-06-16 15:50:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:33,930 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 2662 transitions. [2021-06-16 15:50:33,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 2662 transitions. [2021-06-16 15:50:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-16 15:50:33,934 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:33,934 INFO L472 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] [2021-06-16 15:50:33,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:50:33,934 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash -881261288, now seen corresponding path program 1 times [2021-06-16 15:50:33,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:33,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346882901] [2021-06-16 15:50:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:34,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,024 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:50:34,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:50:34,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:50:34,053 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:50:34,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:34,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:34,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:34,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346882901] [2021-06-16 15:50:34,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346882901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:34,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:34,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:50:34,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252290677] [2021-06-16 15:50:34,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:50:34,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:50:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:50:34,068 INFO L87 Difference]: Start difference. First operand 1228 states and 2662 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:34,208 INFO L93 Difference]: Finished difference Result 1226 states and 2492 transitions. [2021-06-16 15:50:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:50:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-16 15:50:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:34,213 INFO L225 Difference]: With dead ends: 1226 [2021-06-16 15:50:34,213 INFO L226 Difference]: Without dead ends: 792 [2021-06-16 15:50:34,214 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:50:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-06-16 15:50:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2021-06-16 15:50:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 774 states have (on average 2.0400516795865635) internal successors, (1579), 791 states have internal predecessors, (1579), 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) [2021-06-16 15:50:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1579 transitions. [2021-06-16 15:50:34,233 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1579 transitions. Word has length 56 [2021-06-16 15:50:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:34,234 INFO L482 AbstractCegarLoop]: Abstraction has 792 states and 1579 transitions. [2021-06-16 15:50:34,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:50:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1579 transitions. [2021-06-16 15:50:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:50:34,238 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:34,238 INFO L472 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] [2021-06-16 15:50:34,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:50:34,238 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash 227341963, now seen corresponding path program 1 times [2021-06-16 15:50:34,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:34,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240024800] [2021-06-16 15:50:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:34,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,304 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:50:34,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:50:34,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:50:34,330 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:50:34,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:34,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:34,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:34,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240024800] [2021-06-16 15:50:34,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240024800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:34,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:34,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:50:34,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978859641] [2021-06-16 15:50:34,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:50:34,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:50:34,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:50:34,343 INFO L87 Difference]: Start difference. First operand 792 states and 1579 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) [2021-06-16 15:50:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:34,494 INFO L93 Difference]: Finished difference Result 603 states and 1029 transitions. [2021-06-16 15:50:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 15:50:34,495 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 [2021-06-16 15:50:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:34,496 INFO L225 Difference]: With dead ends: 603 [2021-06-16 15:50:34,496 INFO L226 Difference]: Without dead ends: 223 [2021-06-16 15:50:34,496 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:50:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-06-16 15:50:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-06-16 15:50:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 214 states have (on average 1.7476635514018692) internal successors, (374), 222 states have internal predecessors, (374), 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) [2021-06-16 15:50:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 374 transitions. [2021-06-16 15:50:34,502 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 374 transitions. Word has length 58 [2021-06-16 15:50:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:34,502 INFO L482 AbstractCegarLoop]: Abstraction has 223 states and 374 transitions. [2021-06-16 15:50:34,502 INFO L483 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) [2021-06-16 15:50:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 374 transitions. [2021-06-16 15:50:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-16 15:50:34,503 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:50:34,503 INFO L472 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] [2021-06-16 15:50:34,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:50:34,504 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:50:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:50:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1584129204, now seen corresponding path program 1 times [2021-06-16 15:50:34,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:50:34,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667404940] [2021-06-16 15:50:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:50:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:50:34,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:50:34,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:50:34,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:50:34,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:34,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:50:34,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:50:34,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:50:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:50:34,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:50:34,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667404940] [2021-06-16 15:50:34,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667404940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:50:34,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:50:34,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:50:34,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772596648] [2021-06-16 15:50:34,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:50:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:50:34,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:50:34,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:50:34,581 INFO L87 Difference]: Start difference. First operand 223 states and 374 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) [2021-06-16 15:50:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:50:34,646 INFO L93 Difference]: Finished difference Result 187 states and 314 transitions. [2021-06-16 15:50:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:50:34,647 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 [2021-06-16 15:50:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:50:34,647 INFO L225 Difference]: With dead ends: 187 [2021-06-16 15:50:34,647 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:50:34,647 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:50:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:50:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:50:34,648 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) [2021-06-16 15:50:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:50:34,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-16 15:50:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:50:34,648 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:50:34,648 INFO L483 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) [2021-06-16 15:50:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:50:34,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:50:34,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:50:34,650 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:50:34,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:50:34 BasicIcfg [2021-06-16 15:50:34,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:50:34,653 INFO L168 Benchmark]: Toolchain (without parser) took 5347.35 ms. Allocated memory was 175.1 MB in the beginning and 438.3 MB in the end (delta: 263.2 MB). Free memory was 138.9 MB in the beginning and 198.3 MB in the end (delta: -59.4 MB). Peak memory consumption was 204.9 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,653 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 175.1 MB. Free memory is still 156.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:50:34,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.72 ms. Allocated memory is still 175.1 MB. Free memory was 138.7 MB in the beginning and 137.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.02 ms. Allocated memory is still 175.1 MB. Free memory was 137.7 MB in the beginning and 135.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,654 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 175.1 MB. Free memory was 135.6 MB in the beginning and 134.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,654 INFO L168 Benchmark]: RCFGBuilder took 473.58 ms. Allocated memory is still 175.1 MB. Free memory was 134.0 MB in the beginning and 110.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,655 INFO L168 Benchmark]: TraceAbstraction took 4255.47 ms. Allocated memory was 175.1 MB in the beginning and 438.3 MB in the end (delta: 263.2 MB). Free memory was 109.9 MB in the beginning and 198.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 175.9 MB. Max. memory is 8.0 GB. [2021-06-16 15:50:34,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 175.1 MB. Free memory is still 156.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 533.72 ms. Allocated memory is still 175.1 MB. Free memory was 138.7 MB in the beginning and 137.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.02 ms. Allocated memory is still 175.1 MB. Free memory was 137.7 MB in the beginning and 135.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 175.1 MB. Free memory was 135.6 MB in the beginning and 134.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 473.58 ms. Allocated memory is still 175.1 MB. Free memory was 134.0 MB in the beginning and 110.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4255.47 ms. Allocated memory was 175.1 MB in the beginning and 438.3 MB in the end (delta: 263.2 MB). Free memory was 109.9 MB in the beginning and 198.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 175.9 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: 34007, positive: 32361, positive conditional: 32361, positive unconditional: 0, negative: 1646, negative conditional: 1646, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33494, positive: 32361, positive conditional: 0, positive unconditional: 32361, negative: 1133, negative conditional: 0, negative unconditional: 1133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 892, positive: 871, positive conditional: 0, positive unconditional: 871, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 892, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33494, positive: 31490, positive conditional: 0, positive unconditional: 31490, negative: 1112, negative conditional: 0, negative unconditional: 1112, unknown: 892, unknown conditional: 0, unknown unconditional: 892] , Statistics on independence cache: Total cache size (in pairs): 892, Positive cache size: 871, Positive conditional cache size: 0, Positive unconditional cache size: 871, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 513 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4138.0ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 118.9ms, AutomataDifference: 1253.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 993.1ms, PartialOrderReductionTime: 978.9ms, HoareTripleCheckerStatistics: 762 SDtfs, 908 SDslu, 2429 SDs, 0 SdLazy, 309 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 796.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 408.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 280 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.1ms SsaConstructionTime, 229.8ms SatisfiabilityAnalysisTime, 890.0ms InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 1077 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! Received shutdown request...