/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:09:57,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:09:57,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:09:57,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:09:57,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:09:57,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:09:57,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:09:57,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:09:57,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:09:57,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:09:57,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:09:57,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:09:57,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:09:57,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:09:57,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:09:57,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:09:57,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:09:57,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:09:57,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:09:57,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:09:57,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:09:57,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:09:57,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:09:57,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:09:57,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:09:57,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:09:57,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:09:57,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:09:57,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-08-21 17:09:57,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:09:57,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:09:57,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:09:57,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:09:57,983 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:09:57,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:09:57,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:09:57,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:09:57,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:09:57,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:09:57,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:09:57,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:09:57,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:09:57,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:09:57,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:09:57,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:09:57,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:09:57,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:09:57,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:09:57,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:09:57,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:09:57,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:09:57,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:09:57,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:09:57,987 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:09:57,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:09:58,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:09:58,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:09:58,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:09:58,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:09:58,402 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:09:58,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-08-21 17:09:58,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a425a3f/b368af68d6304c2cbe1b480584927954/FLAG1f00f55ed [2021-08-21 17:09:59,046 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:09:59,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-08-21 17:09:59,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a425a3f/b368af68d6304c2cbe1b480584927954/FLAG1f00f55ed [2021-08-21 17:09:59,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a425a3f/b368af68d6304c2cbe1b480584927954 [2021-08-21 17:09:59,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:09:59,381 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:09:59,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:59,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:09:59,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:09:59,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:09:59,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e834df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59, skipping insertion in model container [2021-08-21 17:09:59,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:09:59,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:09:59,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:09:59,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-08-21 17:09:59,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:59,806 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:09:59,818 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-08-21 17:09:59,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:59,923 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:09:59,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59 WrapperNode [2021-08-21 17:09:59,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:59,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:09:59,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:09:59,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:09:59,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:09:59,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:10:00,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:10:00,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:10:00,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:10:00,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:10:00,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:10:00,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:10:00,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:10:00,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (1/1) ... [2021-08-21 17:10:00,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:10:00,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:10:00,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 17:10:00,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 17:10:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:10:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:10:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:10:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:10:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:10:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:10:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:10:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:10:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:10:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:10:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:10:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:10:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:10:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:10:00,150 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:10:00,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:10:00,524 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:10:00,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:00 BoogieIcfgContainer [2021-08-21 17:10:00,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:10:00,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:10:00,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:10:00,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:10:00,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:09:59" (1/3) ... [2021-08-21 17:10:00,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394ce537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:00, skipping insertion in model container [2021-08-21 17:10:00,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:59" (2/3) ... [2021-08-21 17:10:00,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394ce537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:00, skipping insertion in model container [2021-08-21 17:10:00,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:00" (3/3) ... [2021-08-21 17:10:00,533 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-08-21 17:10:00,538 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:10:00,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:10:00,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:10:00,539 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:10:00,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:00,592 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:10:00,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:10:00,635 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:10:00,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:10:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 17:10:01,225 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:01,226 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:01,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash -604234348, now seen corresponding path program 1 times [2021-08-21 17:10:01,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:01,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996564758] [2021-08-21 17:10:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:01,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:01,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:01,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996564758] [2021-08-21 17:10:01,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996564758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:01,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:01,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:01,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025707287] [2021-08-21 17:10:01,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:01,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:01,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:01,772 INFO L87 Difference]: Start difference. First operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:02,112 INFO L93 Difference]: Finished difference Result 5447 states and 9250 transitions. [2021-08-21 17:10:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:10:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-21 17:10:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:02,149 INFO L225 Difference]: With dead ends: 5447 [2021-08-21 17:10:02,150 INFO L226 Difference]: Without dead ends: 2048 [2021-08-21 17:10:02,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:10:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-08-21 17:10:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2021-08-21 17:10:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2018 states have (on average 2.1337958374628343) internal successors, (4306), 2047 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 4306 transitions. [2021-08-21 17:10:02,313 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 4306 transitions. Word has length 49 [2021-08-21 17:10:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:02,313 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 4306 transitions. [2021-08-21 17:10:02,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 4306 transitions. [2021-08-21 17:10:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 17:10:02,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:02,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:02,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:10:02,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:02,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:02,319 INFO L82 PathProgramCache]: Analyzing trace with hash -58138475, now seen corresponding path program 1 times [2021-08-21 17:10:02,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:02,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301226726] [2021-08-21 17:10:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:02,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:02,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:02,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301226726] [2021-08-21 17:10:02,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301226726] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:02,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:02,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:02,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009325853] [2021-08-21 17:10:02,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:02,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:02,575 INFO L87 Difference]: Start difference. First operand 2048 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:02,769 INFO L93 Difference]: Finished difference Result 2288 states and 5068 transitions. [2021-08-21 17:10:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:02,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-21 17:10:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:02,780 INFO L225 Difference]: With dead ends: 2288 [2021-08-21 17:10:02,781 INFO L226 Difference]: Without dead ends: 1688 [2021-08-21 17:10:02,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 171.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:10:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-08-21 17:10:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2021-08-21 17:10:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1658 states have (on average 2.209891435464415) internal successors, (3664), 1687 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3664 transitions. [2021-08-21 17:10:02,828 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3664 transitions. Word has length 51 [2021-08-21 17:10:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 1688 states and 3664 transitions. [2021-08-21 17:10:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3664 transitions. [2021-08-21 17:10:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:10:02,834 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:02,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:02,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:10:02,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash -377331530, now seen corresponding path program 1 times [2021-08-21 17:10:02,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:02,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328862239] [2021-08-21 17:10:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:02,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:03,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:03,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328862239] [2021-08-21 17:10:03,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328862239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:03,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:03,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:03,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358706414] [2021-08-21 17:10:03,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:03,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:03,011 INFO L87 Difference]: Start difference. First operand 1688 states and 3664 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:03,341 INFO L93 Difference]: Finished difference Result 2804 states and 6426 transitions. [2021-08-21 17:10:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:10:03,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-21 17:10:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:03,350 INFO L225 Difference]: With dead ends: 2804 [2021-08-21 17:10:03,350 INFO L226 Difference]: Without dead ends: 1640 [2021-08-21 17:10:03,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 261.5ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:10:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-08-21 17:10:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1592. [2021-08-21 17:10:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1562 states have (on average 2.1683738796414853) internal successors, (3387), 1591 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 3387 transitions. [2021-08-21 17:10:03,395 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 3387 transitions. Word has length 53 [2021-08-21 17:10:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:03,397 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 3387 transitions. [2021-08-21 17:10:03,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 3387 transitions. [2021-08-21 17:10:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:10:03,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:03,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:03,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:10:03,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1165642425, now seen corresponding path program 1 times [2021-08-21 17:10:03,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:03,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555205378] [2021-08-21 17:10:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:03,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:03,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:03,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555205378] [2021-08-21 17:10:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555205378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:03,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:03,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:03,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540142311] [2021-08-21 17:10:03,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:03,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:03,560 INFO L87 Difference]: Start difference. First operand 1592 states and 3387 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:03,731 INFO L93 Difference]: Finished difference Result 2140 states and 4804 transitions. [2021-08-21 17:10:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 17:10:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:03,738 INFO L225 Difference]: With dead ends: 2140 [2021-08-21 17:10:03,739 INFO L226 Difference]: Without dead ends: 1212 [2021-08-21 17:10:03,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:10:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-08-21 17:10:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2021-08-21 17:10:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1192 states have (on average 2.2466442953020134) internal successors, (2678), 1211 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2678 transitions. [2021-08-21 17:10:03,769 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2678 transitions. Word has length 54 [2021-08-21 17:10:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:03,770 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 2678 transitions. [2021-08-21 17:10:03,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2678 transitions. [2021-08-21 17:10:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-21 17:10:03,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:03,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:03,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:10:03,775 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash -749274121, now seen corresponding path program 1 times [2021-08-21 17:10:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:03,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717803566] [2021-08-21 17:10:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:03,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:03,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:03,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717803566] [2021-08-21 17:10:03,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717803566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:03,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:03,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:10:03,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969277544] [2021-08-21 17:10:03,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:10:03,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:10:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:10:03,946 INFO L87 Difference]: Start difference. First operand 1212 states and 2678 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:04,068 INFO L93 Difference]: Finished difference Result 1572 states and 3546 transitions. [2021-08-21 17:10:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:04,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-21 17:10:04,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:04,072 INFO L225 Difference]: With dead ends: 1572 [2021-08-21 17:10:04,072 INFO L226 Difference]: Without dead ends: 672 [2021-08-21 17:10:04,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-08-21 17:10:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-08-21 17:10:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 652 states have (on average 2.26840490797546) internal successors, (1479), 671 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1479 transitions. [2021-08-21 17:10:04,106 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1479 transitions. Word has length 55 [2021-08-21 17:10:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:04,107 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 1479 transitions. [2021-08-21 17:10:04,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1479 transitions. [2021-08-21 17:10:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:10:04,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:04,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:04,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:10:04,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:04,109 INFO L82 PathProgramCache]: Analyzing trace with hash 216582408, now seen corresponding path program 1 times [2021-08-21 17:10:04,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:04,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642128822] [2021-08-21 17:10:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:04,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:04,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:04,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642128822] [2021-08-21 17:10:04,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642128822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:04,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:04,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:10:04,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677997050] [2021-08-21 17:10:04,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:10:04,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:10:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:10:04,238 INFO L87 Difference]: Start difference. First operand 672 states and 1479 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:04,331 INFO L93 Difference]: Finished difference Result 851 states and 1853 transitions. [2021-08-21 17:10:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:10:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 17:10:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:04,334 INFO L225 Difference]: With dead ends: 851 [2021-08-21 17:10:04,335 INFO L226 Difference]: Without dead ends: 615 [2021-08-21 17:10:04,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 70.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:10:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-08-21 17:10:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-08-21 17:10:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 595 states have (on average 2.2890756302521007) internal successors, (1362), 614 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1362 transitions. [2021-08-21 17:10:04,348 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1362 transitions. Word has length 56 [2021-08-21 17:10:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:04,348 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1362 transitions. [2021-08-21 17:10:04,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1362 transitions. [2021-08-21 17:10:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:10:04,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:04,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:04,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:10:04,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1439074754, now seen corresponding path program 1 times [2021-08-21 17:10:04,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:04,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298051008] [2021-08-21 17:10:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:04,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:04,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:04,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298051008] [2021-08-21 17:10:04,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298051008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:04,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:04,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:04,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359380529] [2021-08-21 17:10:04,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:04,460 INFO L87 Difference]: Start difference. First operand 615 states and 1362 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:04,574 INFO L93 Difference]: Finished difference Result 630 states and 1350 transitions. [2021-08-21 17:10:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:04,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 17:10:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:04,577 INFO L225 Difference]: With dead ends: 630 [2021-08-21 17:10:04,577 INFO L226 Difference]: Without dead ends: 428 [2021-08-21 17:10:04,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:10:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-21 17:10:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-08-21 17:10:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 410 states have (on average 2.2219512195121953) internal successors, (911), 427 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 911 transitions. [2021-08-21 17:10:04,588 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 911 transitions. Word has length 57 [2021-08-21 17:10:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:04,589 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 911 transitions. [2021-08-21 17:10:04,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 911 transitions. [2021-08-21 17:10:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:10:04,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:04,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:04,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:10:04,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1306651426, now seen corresponding path program 1 times [2021-08-21 17:10:04,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:04,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702925006] [2021-08-21 17:10:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:04,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:04,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:04,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702925006] [2021-08-21 17:10:04,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702925006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:04,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:04,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:10:04,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594632975] [2021-08-21 17:10:04,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:10:04,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:10:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:10:04,717 INFO L87 Difference]: Start difference. First operand 428 states and 911 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:04,852 INFO L93 Difference]: Finished difference Result 320 states and 621 transitions. [2021-08-21 17:10:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:10:04,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-21 17:10:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:04,854 INFO L225 Difference]: With dead ends: 320 [2021-08-21 17:10:04,854 INFO L226 Difference]: Without dead ends: 203 [2021-08-21 17:10:04,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-21 17:10:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-08-21 17:10:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 1.7989690721649485) internal successors, (349), 202 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 349 transitions. [2021-08-21 17:10:04,859 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 349 transitions. Word has length 58 [2021-08-21 17:10:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:04,859 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 349 transitions. [2021-08-21 17:10:04,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 349 transitions. [2021-08-21 17:10:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-21 17:10:04,860 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:04,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:10:04,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:10:04,860 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:10:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash 522667295, now seen corresponding path program 1 times [2021-08-21 17:10:04,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:04,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117584694] [2021-08-21 17:10:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:04,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:05,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:05,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117584694] [2021-08-21 17:10:05,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117584694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:05,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:05,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:05,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860984848] [2021-08-21 17:10:05,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:05,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:05,007 INFO L87 Difference]: Start difference. First operand 203 states and 349 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:05,066 INFO L93 Difference]: Finished difference Result 167 states and 289 transitions. [2021-08-21 17:10:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:10:05,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-21 17:10:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:05,066 INFO L225 Difference]: With dead ends: 167 [2021-08-21 17:10:05,067 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:10:05,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:10:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:10:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:10:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:10:05,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-08-21 17:10:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:05,068 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:10:05,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:10:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:10:05,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:10:05,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:10:05,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:10:05,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:10:05,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:10:05,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:10:05,075 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:10:05,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:10:05,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:10:05 BasicIcfg [2021-08-21 17:10:05,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:10:05,078 INFO L168 Benchmark]: Toolchain (without parser) took 5696.59 ms. Allocated memory was 195.0 MB in the beginning and 272.6 MB in the end (delta: 77.6 MB). Free memory was 159.2 MB in the beginning and 224.7 MB in the end (delta: -65.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,078 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 195.0 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:10:05,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.63 ms. Allocated memory is still 195.0 MB. Free memory was 159.0 MB in the beginning and 174.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.26 ms. Allocated memory is still 195.0 MB. Free memory was 174.7 MB in the beginning and 172.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,079 INFO L168 Benchmark]: Boogie Preprocessor took 43.61 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 170.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,079 INFO L168 Benchmark]: RCFGBuilder took 473.21 ms. Allocated memory is still 195.0 MB. Free memory was 170.9 MB in the beginning and 147.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,079 INFO L168 Benchmark]: TraceAbstraction took 4548.77 ms. Allocated memory was 195.0 MB in the beginning and 272.6 MB in the end (delta: 77.6 MB). Free memory was 146.8 MB in the beginning and 224.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 715.3 kB. Max. memory is 8.0 GB. [2021-08-21 17:10:05,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 195.0 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 542.63 ms. Allocated memory is still 195.0 MB. Free memory was 159.0 MB in the beginning and 174.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 82.26 ms. Allocated memory is still 195.0 MB. Free memory was 174.7 MB in the beginning and 172.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.61 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 170.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 473.21 ms. Allocated memory is still 195.0 MB. Free memory was 170.9 MB in the beginning and 147.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4548.77 ms. Allocated memory was 195.0 MB in the beginning and 272.6 MB in the end (delta: 77.6 MB). Free memory was 146.8 MB in the beginning and 224.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 715.3 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15504, positive: 15015, positive conditional: 15015, positive unconditional: 0, negative: 489, negative conditional: 489, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15435, positive: 15015, positive conditional: 0, positive unconditional: 15015, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 616, positive: 602, positive conditional: 0, positive unconditional: 602, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 616, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15435, positive: 14413, positive conditional: 0, positive unconditional: 14413, negative: 406, negative conditional: 0, negative unconditional: 406, unknown: 616, unknown conditional: 0, unknown unconditional: 616] , Statistics on independence cache: Total cache size (in pairs): 616, Positive cache size: 602, Positive conditional cache size: 0, Positive unconditional cache size: 602, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 69 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4446.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 57.9ms, AutomataDifference: 1679.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 550.7ms, PartialOrderReductionTime: 517.0ms, HoareTripleCheckerStatistics: 792 SDtfs, 1154 SDslu, 2519 SDs, 0 SdLazy, 359 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 326.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1225.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4775occurred in iteration=0, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 326.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.6ms SsaConstructionTime, 217.6ms SatisfiabilityAnalysisTime, 1358.5ms InterpolantComputationTime, 493 NumberOfCodeBlocks, 493 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:10:05,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...