/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:28:05,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:28:05,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:28:05,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:28:05,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:28:05,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:28:05,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:28:05,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:28:05,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:28:05,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:28:05,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:28:05,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:28:05,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:28:05,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:28:05,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:28:05,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:28:05,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:28:05,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:28:05,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:28:05,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:28:05,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:28:05,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:28:05,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:28:05,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:28:05,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-26 17:28:05,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-26 17:28:05,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-26 17:28:05,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-26 17:28:05,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-26 17:28:05,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-26 17:28:05,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:28:05,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:28:05,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:28:05,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:28:05,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:28:05,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:28:05,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:28:05,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:28:05,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:28:05,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:28:05,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:28:05,414 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.epf [2021-01-26 17:28:05,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:28:05,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:28:05,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:28:05,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:28:05,469 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:28:05,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:28:05,469 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:28:05,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:28:05,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:28:05,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:28:05,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:28:05,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:28:05,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:28:05,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:28:05,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:28:05,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:28:05,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:28:05,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:28:05,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:28:05,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:28:05,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:28:05,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:28:05,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:28:05,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:28:05,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:28:05,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:28:05,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:28:05,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:28:05,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:28:05,476 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:28:05,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:28:05,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:28:05,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:28:05,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:28:05,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:28:05,927 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:28:05,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-01-26 17:28:06,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce8c9803/f434225db14e45838f8b310da8d12e2a/FLAG48ed9faa7 [2021-01-26 17:28:06,763 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:28:06,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-01-26 17:28:06,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce8c9803/f434225db14e45838f8b310da8d12e2a/FLAG48ed9faa7 [2021-01-26 17:28:07,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce8c9803/f434225db14e45838f8b310da8d12e2a [2021-01-26 17:28:07,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:28:07,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:28:07,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:28:07,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:28:07,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:28:07,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267ce437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07, skipping insertion in model container [2021-01-26 17:28:07,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:28:07,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:28:07,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:28:07,504 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:28:07,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:28:07,666 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:28:07,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07 WrapperNode [2021-01-26 17:28:07,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:28:07,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:28:07,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:28:07,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:28:07,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:28:07,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:28:07,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:28:07,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:28:07,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... [2021-01-26 17:28:07,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:28:07,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:28:07,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:28:07,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:28:07,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:28:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:28:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:28:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:28:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:28:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:28:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:28:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:28:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:28:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:28:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-26 17:28:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-26 17:28:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:28:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:28:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:28:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:28:08,010 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:28:08,543 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:28:08,543 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:28:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:28:08 BoogieIcfgContainer [2021-01-26 17:28:08,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:28:08,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:28:08,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:28:08,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:28:08,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:28:07" (1/3) ... [2021-01-26 17:28:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e606964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:28:08, skipping insertion in model container [2021-01-26 17:28:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:28:07" (2/3) ... [2021-01-26 17:28:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e606964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:28:08, skipping insertion in model container [2021-01-26 17:28:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:28:08" (3/3) ... [2021-01-26 17:28:08,558 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-01-26 17:28:08,574 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:28:08,574 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:28:08,578 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:28:08,579 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:28:08,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,614 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,614 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,614 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,616 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,616 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,617 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,617 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,619 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,619 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,619 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,619 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,620 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,620 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,620 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,620 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,621 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,621 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,621 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,621 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,623 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,631 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,631 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,631 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,631 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,634 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,634 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:28:08,640 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:28:08,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-26 17:28:08,674 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:28:08,674 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:28:08,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:28:08,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:28:08,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:28:08,674 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:28:08,675 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:28:08,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:28:08,687 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 89 transitions, 198 flow [2021-01-26 17:28:18,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 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) [2021-01-26 17:28:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 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) [2021-01-26 17:28:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:28:19,226 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:19,227 INFO L504 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] [2021-01-26 17:28:19,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash -864945227, now seen corresponding path program 1 times [2021-01-26 17:28:19,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:19,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49981893] [2021-01-26 17:28:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:19,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49981893] [2021-01-26 17:28:19,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:19,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:19,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084130875] [2021-01-26 17:28:19,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:19,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:19,768 INFO L87 Difference]: Start difference. First operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-01-26 17:28:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:21,139 INFO L93 Difference]: Finished difference Result 73967 states and 317811 transitions. [2021-01-26 17:28:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:21,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2021-01-26 17:28:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:21,440 INFO L225 Difference]: With dead ends: 73967 [2021-01-26 17:28:21,440 INFO L226 Difference]: Without dead ends: 25835 [2021-01-26 17:28:21,442 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:21,442 INFO L78 Accepts]: Start accepts. Automaton has 25835 states. Word has length 45 [2021-01-26 17:28:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:21,444 INFO L481 AbstractCegarLoop]: Abstraction has 25835 states. [2021-01-26 17:28:21,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-01-26 17:28:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 25835 states. [2021-01-26 17:28:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-26 17:28:21,512 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:21,512 INFO L504 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] [2021-01-26 17:28:21,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:28:21,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1139015446, now seen corresponding path program 1 times [2021-01-26 17:28:21,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:21,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532196552] [2021-01-26 17:28:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:21,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532196552] [2021-01-26 17:28:21,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:21,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:21,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191962390] [2021-01-26 17:28:21,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:21,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:21,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:21,989 INFO L87 Difference]: Start difference. First operand 25835 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-26 17:28:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:22,769 INFO L93 Difference]: Finished difference Result 28427 states and 119043 transitions. [2021-01-26 17:28:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:22,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-01-26 17:28:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:23,084 INFO L225 Difference]: With dead ends: 28427 [2021-01-26 17:28:23,084 INFO L226 Difference]: Without dead ends: 22379 [2021-01-26 17:28:23,086 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:23,086 INFO L78 Accepts]: Start accepts. Automaton has 22379 states. Word has length 47 [2021-01-26 17:28:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:23,088 INFO L481 AbstractCegarLoop]: Abstraction has 22379 states. [2021-01-26 17:28:23,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-26 17:28:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 22379 states. [2021-01-26 17:28:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-26 17:28:23,203 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:23,203 INFO L504 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] [2021-01-26 17:28:23,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:28:23,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1367050025, now seen corresponding path program 1 times [2021-01-26 17:28:23,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:23,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31373389] [2021-01-26 17:28:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:23,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31373389] [2021-01-26 17:28:23,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:23,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:23,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385270461] [2021-01-26 17:28:23,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:23,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:23,413 INFO L87 Difference]: Start difference. First operand 22379 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:23,800 INFO L93 Difference]: Finished difference Result 26123 states and 108715 transitions. [2021-01-26 17:28:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:23,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-26 17:28:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:23,894 INFO L225 Difference]: With dead ends: 26123 [2021-01-26 17:28:23,895 INFO L226 Difference]: Without dead ends: 21803 [2021-01-26 17:28:23,895 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:23,896 INFO L78 Accepts]: Start accepts. Automaton has 21803 states. Word has length 49 [2021-01-26 17:28:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:23,897 INFO L481 AbstractCegarLoop]: Abstraction has 21803 states. [2021-01-26 17:28:23,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:23,897 INFO L276 IsEmpty]: Start isEmpty. Operand 21803 states. [2021-01-26 17:28:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:28:23,954 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:23,954 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:28:23,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:28:23,955 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1400237191, now seen corresponding path program 1 times [2021-01-26 17:28:23,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:23,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264350248] [2021-01-26 17:28:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:24,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264350248] [2021-01-26 17:28:24,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:24,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:24,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628461236] [2021-01-26 17:28:24,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:24,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:24,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:24,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:24,130 INFO L87 Difference]: Start difference. First operand 21803 states. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:24,798 INFO L93 Difference]: Finished difference Result 35083 states and 143907 transitions. [2021-01-26 17:28:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:24,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-26 17:28:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:24,897 INFO L225 Difference]: With dead ends: 35083 [2021-01-26 17:28:24,897 INFO L226 Difference]: Without dead ends: 24107 [2021-01-26 17:28:24,898 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:24,898 INFO L78 Accepts]: Start accepts. Automaton has 24107 states. Word has length 50 [2021-01-26 17:28:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:24,899 INFO L481 AbstractCegarLoop]: Abstraction has 24107 states. [2021-01-26 17:28:24,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 24107 states. [2021-01-26 17:28:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 17:28:24,949 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:24,949 INFO L504 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] [2021-01-26 17:28:24,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:28:24,950 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash -273017064, now seen corresponding path program 1 times [2021-01-26 17:28:24,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:24,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353426233] [2021-01-26 17:28:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:25,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353426233] [2021-01-26 17:28:25,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:25,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:28:25,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084635629] [2021-01-26 17:28:25,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:28:25,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:25,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:28:25,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:28:25,067 INFO L87 Difference]: Start difference. First operand 24107 states. 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) [2021-01-26 17:28:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:25,705 INFO L93 Difference]: Finished difference Result 37331 states and 151141 transitions. [2021-01-26 17:28:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:28:25,705 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 [2021-01-26 17:28:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:25,767 INFO L225 Difference]: With dead ends: 37331 [2021-01-26 17:28:25,768 INFO L226 Difference]: Without dead ends: 22347 [2021-01-26 17:28:25,768 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:25,768 INFO L78 Accepts]: Start accepts. Automaton has 22347 states. Word has length 51 [2021-01-26 17:28:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:25,769 INFO L481 AbstractCegarLoop]: Abstraction has 22347 states. [2021-01-26 17:28:25,769 INFO L482 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) [2021-01-26 17:28:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22347 states. [2021-01-26 17:28:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 17:28:25,799 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:25,799 INFO L504 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] [2021-01-26 17:28:25,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:28:25,799 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:25,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1854220962, now seen corresponding path program 2 times [2021-01-26 17:28:25,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:25,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006015834] [2021-01-26 17:28:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:25,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006015834] [2021-01-26 17:28:25,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:25,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:25,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511721131] [2021-01-26 17:28:25,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:25,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:25,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:25,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:25,985 INFO L87 Difference]: Start difference. First operand 22347 states. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:26,620 INFO L93 Difference]: Finished difference Result 24075 states and 97005 transitions. [2021-01-26 17:28:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-26 17:28:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:26,679 INFO L225 Difference]: With dead ends: 24075 [2021-01-26 17:28:26,679 INFO L226 Difference]: Without dead ends: 20043 [2021-01-26 17:28:26,680 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:26,680 INFO L78 Accepts]: Start accepts. Automaton has 20043 states. Word has length 51 [2021-01-26 17:28:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:26,680 INFO L481 AbstractCegarLoop]: Abstraction has 20043 states. [2021-01-26 17:28:26,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20043 states. [2021-01-26 17:28:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:28:26,707 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:26,707 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:28:26,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:28:26,708 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:26,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:26,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1153343617, now seen corresponding path program 1 times [2021-01-26 17:28:26,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:26,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890567646] [2021-01-26 17:28:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:26,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890567646] [2021-01-26 17:28:26,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:26,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:28:26,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405052529] [2021-01-26 17:28:26,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:28:26,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:26,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:28:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:28:26,873 INFO L87 Difference]: Start difference. First operand 20043 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:27,614 INFO L93 Difference]: Finished difference Result 41835 states and 165821 transitions. [2021-01-26 17:28:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-26 17:28:27,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:28:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:27,689 INFO L225 Difference]: With dead ends: 41835 [2021-01-26 17:28:27,689 INFO L226 Difference]: Without dead ends: 20187 [2021-01-26 17:28:27,690 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-01-26 17:28:27,690 INFO L78 Accepts]: Start accepts. Automaton has 20187 states. Word has length 52 [2021-01-26 17:28:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:27,691 INFO L481 AbstractCegarLoop]: Abstraction has 20187 states. [2021-01-26 17:28:27,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20187 states. [2021-01-26 17:28:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-26 17:28:27,719 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:27,719 INFO L504 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] [2021-01-26 17:28:27,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:28:27,719 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash -613264223, now seen corresponding path program 1 times [2021-01-26 17:28:27,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:27,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473270504] [2021-01-26 17:28:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:27,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473270504] [2021-01-26 17:28:27,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:27,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:28:27,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624214378] [2021-01-26 17:28:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:28:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:28:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:28:27,904 INFO L87 Difference]: Start difference. First operand 20187 states. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:28,262 INFO L93 Difference]: Finished difference Result 24795 states and 96521 transitions. [2021-01-26 17:28:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:28:28,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-26 17:28:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:28,315 INFO L225 Difference]: With dead ends: 24795 [2021-01-26 17:28:28,315 INFO L226 Difference]: Without dead ends: 19419 [2021-01-26 17:28:28,315 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:28,316 INFO L78 Accepts]: Start accepts. Automaton has 19419 states. Word has length 53 [2021-01-26 17:28:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:28,316 INFO L481 AbstractCegarLoop]: Abstraction has 19419 states. [2021-01-26 17:28:28,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19419 states. [2021-01-26 17:28:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-26 17:28:28,347 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:28,347 INFO L504 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] [2021-01-26 17:28:28,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:28:28,348 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1217531091, now seen corresponding path program 1 times [2021-01-26 17:28:28,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:28,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336181892] [2021-01-26 17:28:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:28,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336181892] [2021-01-26 17:28:28,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:28,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:28:28,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005601665] [2021-01-26 17:28:28,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:28:28,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:28,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:28:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:28:28,479 INFO L87 Difference]: Start difference. First operand 19419 states. 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) [2021-01-26 17:28:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:29,068 INFO L93 Difference]: Finished difference Result 20655 states and 79051 transitions. [2021-01-26 17:28:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:28:29,070 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 [2021-01-26 17:28:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:29,146 INFO L225 Difference]: With dead ends: 20655 [2021-01-26 17:28:29,146 INFO L226 Difference]: Without dead ends: 15663 [2021-01-26 17:28:29,147 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:28:29,147 INFO L78 Accepts]: Start accepts. Automaton has 15663 states. Word has length 54 [2021-01-26 17:28:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:29,148 INFO L481 AbstractCegarLoop]: Abstraction has 15663 states. [2021-01-26 17:28:29,148 INFO L482 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) [2021-01-26 17:28:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 15663 states. [2021-01-26 17:28:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-26 17:28:29,172 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:29,173 INFO L504 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] [2021-01-26 17:28:29,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-26 17:28:29,173 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1586012644, now seen corresponding path program 1 times [2021-01-26 17:28:29,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:29,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845990700] [2021-01-26 17:28:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:29,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845990700] [2021-01-26 17:28:29,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:29,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:28:29,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037816417] [2021-01-26 17:28:29,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:28:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:29,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:28:29,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:28:29,325 INFO L87 Difference]: Start difference. First operand 15663 states. 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) [2021-01-26 17:28:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:29,612 INFO L93 Difference]: Finished difference Result 12396 states and 46101 transitions. [2021-01-26 17:28:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:28:29,613 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 [2021-01-26 17:28:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:29,639 INFO L225 Difference]: With dead ends: 12396 [2021-01-26 17:28:29,639 INFO L226 Difference]: Without dead ends: 8508 [2021-01-26 17:28:29,640 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:28:29,640 INFO L78 Accepts]: Start accepts. Automaton has 8508 states. Word has length 55 [2021-01-26 17:28:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:29,641 INFO L481 AbstractCegarLoop]: Abstraction has 8508 states. [2021-01-26 17:28:29,641 INFO L482 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) [2021-01-26 17:28:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8508 states. [2021-01-26 17:28:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-26 17:28:29,657 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:29,657 INFO L504 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] [2021-01-26 17:28:29,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-26 17:28:29,658 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:29,658 INFO L82 PathProgramCache]: Analyzing trace with hash -237436163, now seen corresponding path program 1 times [2021-01-26 17:28:29,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:29,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218829237] [2021-01-26 17:28:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:29,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218829237] [2021-01-26 17:28:29,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:29,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-26 17:28:29,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548281674] [2021-01-26 17:28:29,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-26 17:28:29,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:29,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-26 17:28:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-26 17:28:29,808 INFO L87 Difference]: Start difference. First operand 8508 states. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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) [2021-01-26 17:28:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:30,086 INFO L93 Difference]: Finished difference Result 5484 states and 19683 transitions. [2021-01-26 17:28:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-26 17:28:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 [2021-01-26 17:28:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:30,093 INFO L225 Difference]: With dead ends: 5484 [2021-01-26 17:28:30,093 INFO L226 Difference]: Without dead ends: 2280 [2021-01-26 17:28:30,094 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-01-26 17:28:30,094 INFO L78 Accepts]: Start accepts. Automaton has 2280 states. Word has length 57 [2021-01-26 17:28:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:30,094 INFO L481 AbstractCegarLoop]: Abstraction has 2280 states. [2021-01-26 17:28:30,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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) [2021-01-26 17:28:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states. [2021-01-26 17:28:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-26 17:28:30,100 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:28:30,101 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:28:30,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-26 17:28:30,101 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:28:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:28:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash 665182430, now seen corresponding path program 1 times [2021-01-26 17:28:30,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:28:30,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193328965] [2021-01-26 17:28:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:28:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:28:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:28:30,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193328965] [2021-01-26 17:28:30,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:28:30,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:28:30,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945770056] [2021-01-26 17:28:30,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:28:30,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:28:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:28:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:28:30,243 INFO L87 Difference]: Start difference. First operand 2280 states. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:28:30,337 INFO L93 Difference]: Finished difference Result 1956 states and 6832 transitions. [2021-01-26 17:28:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:28:30,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-01-26 17:28:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:28:30,338 INFO L225 Difference]: With dead ends: 1956 [2021-01-26 17:28:30,338 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:28:30,339 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:28:30,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 59 [2021-01-26 17:28:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:28:30,339 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:28:30,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:28:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:28:30,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:28:30,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-26 17:28:30,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:28:30 BasicIcfg [2021-01-26 17:28:30,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:28:30,347 INFO L168 Benchmark]: Toolchain (without parser) took 23323.09 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 277.2 MB in the beginning and 6.3 GB in the end (delta: -6.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. [2021-01-26 17:28:30,348 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:28:30,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.08 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 244.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:28:30,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.03 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 284.5 MB in the end (delta: -40.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2021-01-26 17:28:30,350 INFO L168 Benchmark]: Boogie Preprocessor took 70.95 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 282.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:28:30,351 INFO L168 Benchmark]: RCFGBuilder took 646.17 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-01-26 17:28:30,352 INFO L168 Benchmark]: TraceAbstraction took 21794.51 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 258.2 MB in the beginning and 6.3 GB in the end (delta: -6.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. [2021-01-26 17:28:30,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 634.08 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 244.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 160.03 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 284.5 MB in the end (delta: -40.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 70.95 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 282.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 646.17 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 21794.51 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 258.2 MB in the beginning and 6.3 GB in the end (delta: -6.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.0s, HoareTripleCheckerStatistics: 1402 SDtfs, 2184 SDslu, 4477 SDs, 0 SdLazy, 507 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54311occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 83993 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...