/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:41:25,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:41:25,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:41:25,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:41:25,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:41:25,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:41:25,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:41:25,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:41:25,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:41:25,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:41:25,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:41:25,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:41:25,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:41:25,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:41:25,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:41:25,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:41:25,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:41:25,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:41:25,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:41:25,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:41:25,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:41:26,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:41:26,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:41:26,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:41:26,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:41:26,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:41:26,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:41:26,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:41:26,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:41:26,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:41:26,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:41:26,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:41:26,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:41:26,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:41:26,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:41:26,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:41:26,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:41:26,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:41:26,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:41:26,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:41:26,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:41:26,063 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:41:26,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:41:26,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:41:26,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:41:26,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:41:26,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:41:26,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:41:26,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:41:26,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:41:26,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:41:26,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:41:26,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:41:26,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:41:26,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:41:26,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:41:26,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:41:26,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:41:26,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:41:26,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:41:26,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:41:26,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:41:26,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:41:26,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:41:26,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:41:26,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:41:26,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:41:26,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:41:26,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:41:26,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:41:26,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:41:26,519 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:41:26,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-11-09 12:41:26,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be8e9ea4/8e31dbdcea9448c8ae227eff21deb949/FLAG16668baae [2020-11-09 12:41:27,351 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:41:27,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-11-09 12:41:27,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be8e9ea4/8e31dbdcea9448c8ae227eff21deb949/FLAG16668baae [2020-11-09 12:41:27,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be8e9ea4/8e31dbdcea9448c8ae227eff21deb949 [2020-11-09 12:41:27,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:41:27,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:41:27,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:41:27,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:41:27,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:41:27,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:41:27" (1/1) ... [2020-11-09 12:41:27,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f67f5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:27, skipping insertion in model container [2020-11-09 12:41:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:41:27" (1/1) ... [2020-11-09 12:41:27,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:41:27,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:41:28,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:41:28,057 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:41:28,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:41:28,261 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:41:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28 WrapperNode [2020-11-09 12:41:28,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:41:28,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:41:28,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:41:28,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:41:28,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:41:28,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:41:28,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:41:28,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:41:28,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (1/1) ... [2020-11-09 12:41:28,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:41:28,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:41:28,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:41:28,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:41:28,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (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 [2020-11-09 12:41:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:41:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:41:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:41:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:41:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:41:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:41:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:41:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:41:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:41:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:41:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:41:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:41:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:41:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:41:28,464 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:41:29,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:41:29,144 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:41:29,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:41:29 BoogieIcfgContainer [2020-11-09 12:41:29,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:41:29,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:41:29,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:41:29,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:41:29,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:41:27" (1/3) ... [2020-11-09 12:41:29,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c18a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:41:29, skipping insertion in model container [2020-11-09 12:41:29,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:41:28" (2/3) ... [2020-11-09 12:41:29,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c18a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:41:29, skipping insertion in model container [2020-11-09 12:41:29,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:41:29" (3/3) ... [2020-11-09 12:41:29,159 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-11-09 12:41:29,175 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:41:29,175 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:41:29,179 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:41:29,180 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:41:29,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,255 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,255 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,259 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,291 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,291 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:41:29,299 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:41:29,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:41:29,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:41:29,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:41:29,351 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:41:29,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:41:29,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:41:29,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:41:29,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:41:29,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:41:29,369 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:41:29,372 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:41:29,376 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:41:29,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:41:29,435 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:41:29,436 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:41:29,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:41:29,443 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:41:33,659 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:41:33,792 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:41:34,039 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:41:34,159 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:41:34,190 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-09 12:41:34,192 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 12:41:34,203 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 12:41:34,248 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 12:41:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 12:41:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:41:34,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:34,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:34,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-09 12:41:34,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:34,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32218500] [2020-11-09 12:41:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:34,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32218500] [2020-11-09 12:41:34,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:34,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:41:34,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55601528] [2020-11-09 12:41:34,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:41:34,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:34,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:41:34,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:41:34,508 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 12:41:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:34,545 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 12:41:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:41:34,547 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:41:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:34,563 INFO L225 Difference]: With dead ends: 362 [2020-11-09 12:41:34,563 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 12:41:34,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:41:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 12:41:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 12:41:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 12:41:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 12:41:34,684 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 12:41:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:34,686 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 12:41:34,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:41:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 12:41:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:41:34,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:34,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:34,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:41:34,692 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-09 12:41:34,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:34,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280930088] [2020-11-09 12:41:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:34,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280930088] [2020-11-09 12:41:34,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:34,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:41:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612002103] [2020-11-09 12:41:35,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:35,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:35,003 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-09 12:41:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:35,137 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-09 12:41:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:41:35,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-09 12:41:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:35,142 INFO L225 Difference]: With dead ends: 330 [2020-11-09 12:41:35,142 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 12:41:35,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 12:41:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-09 12:41:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-09 12:41:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-09 12:41:35,168 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-09 12:41:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:35,168 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-09 12:41:35,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-09 12:41:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:41:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:35,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:35,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:41:35,171 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-09 12:41:35,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:35,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192729318] [2020-11-09 12:41:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:35,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192729318] [2020-11-09 12:41:35,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:35,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:41:35,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726086484] [2020-11-09 12:41:35,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:41:35,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:35,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:41:35,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:41:35,280 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-09 12:41:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:35,506 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-11-09 12:41:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 12:41:35,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 12:41:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:35,509 INFO L225 Difference]: With dead ends: 338 [2020-11-09 12:41:35,509 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 12:41:35,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-09 12:41:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 12:41:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 12:41:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 12:41:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-11-09 12:41:35,521 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-11-09 12:41:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:35,521 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-11-09 12:41:35,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:41:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-11-09 12:41:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:41:35,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:35,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:35,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:41:35,524 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-11-09 12:41:35,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:35,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238957226] [2020-11-09 12:41:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:35,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238957226] [2020-11-09 12:41:35,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:35,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:41:35,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639614691] [2020-11-09 12:41:35,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:41:35,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:41:35,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:41:35,596 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-11-09 12:41:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:35,650 INFO L93 Difference]: Finished difference Result 226 states and 536 transitions. [2020-11-09 12:41:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:35,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:41:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:35,652 INFO L225 Difference]: With dead ends: 226 [2020-11-09 12:41:35,652 INFO L226 Difference]: Without dead ends: 190 [2020-11-09 12:41:35,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-09 12:41:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2020-11-09 12:41:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-09 12:41:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 446 transitions. [2020-11-09 12:41:35,661 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 446 transitions. Word has length 12 [2020-11-09 12:41:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:35,661 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 446 transitions. [2020-11-09 12:41:35,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:41:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 446 transitions. [2020-11-09 12:41:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:41:35,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:35,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:35,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:41:35,664 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash -10402391, now seen corresponding path program 1 times [2020-11-09 12:41:35,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:35,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423323054] [2020-11-09 12:41:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:35,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423323054] [2020-11-09 12:41:35,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:35,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:41:35,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747627352] [2020-11-09 12:41:35,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:41:35,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:41:35,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:41:35,735 INFO L87 Difference]: Start difference. First operand 182 states and 446 transitions. Second operand 4 states. [2020-11-09 12:41:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:35,798 INFO L93 Difference]: Finished difference Result 186 states and 445 transitions. [2020-11-09 12:41:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:35,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:41:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:35,801 INFO L225 Difference]: With dead ends: 186 [2020-11-09 12:41:35,801 INFO L226 Difference]: Without dead ends: 174 [2020-11-09 12:41:35,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-09 12:41:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-09 12:41:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-09 12:41:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 426 transitions. [2020-11-09 12:41:35,809 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 426 transitions. Word has length 13 [2020-11-09 12:41:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:35,810 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 426 transitions. [2020-11-09 12:41:35,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:41:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 426 transitions. [2020-11-09 12:41:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:41:35,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:35,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:35,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:41:35,812 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:35,812 INFO L82 PathProgramCache]: Analyzing trace with hash 370300484, now seen corresponding path program 1 times [2020-11-09 12:41:35,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:35,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806966356] [2020-11-09 12:41:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:35,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806966356] [2020-11-09 12:41:35,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:35,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:41:35,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597604508] [2020-11-09 12:41:35,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:41:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:41:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:41:35,924 INFO L87 Difference]: Start difference. First operand 174 states and 426 transitions. Second operand 4 states. [2020-11-09 12:41:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:35,977 INFO L93 Difference]: Finished difference Result 182 states and 434 transitions. [2020-11-09 12:41:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:35,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:41:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:35,980 INFO L225 Difference]: With dead ends: 182 [2020-11-09 12:41:35,980 INFO L226 Difference]: Without dead ends: 166 [2020-11-09 12:41:35,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-09 12:41:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-09 12:41:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-09 12:41:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 402 transitions. [2020-11-09 12:41:35,988 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 402 transitions. Word has length 13 [2020-11-09 12:41:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:35,989 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 402 transitions. [2020-11-09 12:41:35,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:41:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 402 transitions. [2020-11-09 12:41:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:41:35,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:35,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:35,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:41:35,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash -322532679, now seen corresponding path program 1 times [2020-11-09 12:41:35,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:35,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817203126] [2020-11-09 12:41:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817203126] [2020-11-09 12:41:36,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:41:36,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242108785] [2020-11-09 12:41:36,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:36,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:36,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,063 INFO L87 Difference]: Start difference. First operand 166 states and 402 transitions. Second operand 5 states. [2020-11-09 12:41:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,128 INFO L93 Difference]: Finished difference Result 178 states and 420 transitions. [2020-11-09 12:41:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:36,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:41:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,130 INFO L225 Difference]: With dead ends: 178 [2020-11-09 12:41:36,130 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:41:36,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:41:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:41:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:41:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 356 transitions. [2020-11-09 12:41:36,137 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 356 transitions. Word has length 14 [2020-11-09 12:41:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,137 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 356 transitions. [2020-11-09 12:41:36,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 356 transitions. [2020-11-09 12:41:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:41:36,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:41:36,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1988159974, now seen corresponding path program 1 times [2020-11-09 12:41:36,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444598628] [2020-11-09 12:41:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444598628] [2020-11-09 12:41:36,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:41:36,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134472720] [2020-11-09 12:41:36,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:36,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,206 INFO L87 Difference]: Start difference. First operand 146 states and 356 transitions. Second operand 5 states. [2020-11-09 12:41:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,258 INFO L93 Difference]: Finished difference Result 218 states and 530 transitions. [2020-11-09 12:41:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:36,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:41:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,260 INFO L225 Difference]: With dead ends: 218 [2020-11-09 12:41:36,260 INFO L226 Difference]: Without dead ends: 116 [2020-11-09 12:41:36,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-09 12:41:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-09 12:41:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 12:41:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-11-09 12:41:36,265 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 14 [2020-11-09 12:41:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,266 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-11-09 12:41:36,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-11-09 12:41:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:41:36,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:41:36,267 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1926444660, now seen corresponding path program 2 times [2020-11-09 12:41:36,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205904396] [2020-11-09 12:41:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205904396] [2020-11-09 12:41:36,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:41:36,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227993344] [2020-11-09 12:41:36,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:36,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:36,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,318 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 5 states. [2020-11-09 12:41:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,394 INFO L93 Difference]: Finished difference Result 152 states and 362 transitions. [2020-11-09 12:41:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:41:36,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:41:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,396 INFO L225 Difference]: With dead ends: 152 [2020-11-09 12:41:36,396 INFO L226 Difference]: Without dead ends: 80 [2020-11-09 12:41:36,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-09 12:41:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-09 12:41:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-09 12:41:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-11-09 12:41:36,400 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 14 [2020-11-09 12:41:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,401 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-11-09 12:41:36,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-11-09 12:41:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:41:36,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:41:36,403 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 3 times [2020-11-09 12:41:36,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942880990] [2020-11-09 12:41:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942880990] [2020-11-09 12:41:36,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:41:36,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578015837] [2020-11-09 12:41:36,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:41:36,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:41:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:41:36,492 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-11-09 12:41:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,517 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-11-09 12:41:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:41:36,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 12:41:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,519 INFO L225 Difference]: With dead ends: 91 [2020-11-09 12:41:36,519 INFO L226 Difference]: Without dead ends: 69 [2020-11-09 12:41:36,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-09 12:41:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-09 12:41:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-09 12:41:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-11-09 12:41:36,522 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-11-09 12:41:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,523 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-11-09 12:41:36,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:41:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-11-09 12:41:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:41:36,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 12:41:36,524 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-09 12:41:36,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787639788] [2020-11-09 12:41:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787639788] [2020-11-09 12:41:36,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:41:36,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624881141] [2020-11-09 12:41:36,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:36,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:36,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,573 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-11-09 12:41:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,614 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-09 12:41:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:36,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-09 12:41:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,615 INFO L225 Difference]: With dead ends: 65 [2020-11-09 12:41:36,615 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 12:41:36,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 12:41:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-09 12:41:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-09 12:41:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-11-09 12:41:36,618 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-11-09 12:41:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,618 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-11-09 12:41:36,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-11-09 12:41:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 12:41:36,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 12:41:36,620 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-09 12:41:36,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487948388] [2020-11-09 12:41:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487948388] [2020-11-09 12:41:36,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:41:36,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970428478] [2020-11-09 12:41:36,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:41:36,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:41:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:41:36,684 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-11-09 12:41:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,748 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-09 12:41:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:41:36,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-09 12:41:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,749 INFO L225 Difference]: With dead ends: 43 [2020-11-09 12:41:36,749 INFO L226 Difference]: Without dead ends: 37 [2020-11-09 12:41:36,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:41:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-09 12:41:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-09 12:41:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 12:41:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-09 12:41:36,751 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-11-09 12:41:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,752 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-09 12:41:36,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:41:36,752 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-09 12:41:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:41:36,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:41:36,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:41:36,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-09 12:41:36,753 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:41:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:41:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-09 12:41:36,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:41:36,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849086648] [2020-11-09 12:41:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:41:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:41:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:41:36,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849086648] [2020-11-09 12:41:36,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:41:36,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:41:36,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935906984] [2020-11-09 12:41:36,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:41:36,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:41:36,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:41:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:41:36,815 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-11-09 12:41:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:41:36,843 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-09 12:41:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:41:36,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:41:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:41:36,844 INFO L225 Difference]: With dead ends: 36 [2020-11-09 12:41:36,844 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:41:36,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:41:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:41:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:41:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:41:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:41:36,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 12:41:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:41:36,847 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:41:36,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:41:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:41:36,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:41:36,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-09 12:41:36,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:41:36 BasicIcfg [2020-11-09 12:41:36,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:41:36,858 INFO L168 Benchmark]: Toolchain (without parser) took 9260.03 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 133.1 MB in the beginning and 141.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 58.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,859 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 152.0 MB. Free memory was 124.9 MB in the beginning and 124.9 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:41:36,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.36 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 116.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,864 INFO L168 Benchmark]: Boogie Preprocessor took 30.85 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 112.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,868 INFO L168 Benchmark]: RCFGBuilder took 790.91 ms. Allocated memory is still 152.0 MB. Free memory was 112.9 MB in the beginning and 90.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,874 INFO L168 Benchmark]: TraceAbstraction took 7703.11 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 90.6 MB in the beginning and 141.7 MB in the end (delta: -51.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:41:36,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 152.0 MB. Free memory was 124.9 MB in the beginning and 124.9 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 659.36 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 116.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.85 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 112.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 790.91 ms. Allocated memory is still 152.0 MB. Free memory was 112.9 MB in the beginning and 90.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7703.11 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 90.6 MB in the beginning and 141.7 MB in the end (delta: -51.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 953 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - 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 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 259 SDtfs, 299 SDslu, 409 SDs, 0 SdLazy, 196 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 6436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...