/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/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:47:58,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:47:58,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:47:58,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:47:58,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:47:58,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:47:58,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:47:58,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:47:58,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:47:58,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:47:58,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:47:58,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:47:58,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:47:58,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:47:58,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:47:58,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:47:58,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:47:58,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:47:58,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:47:58,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:47:58,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:47:58,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:47:58,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:47:58,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:47:58,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:47:58,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:47:58,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:47:58,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:47:58,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:47:58,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:47:58,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:47:58,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:47:58,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:47:58,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:47:58,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:47:58,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:47:58,182 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 12:47:58,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:47:58,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:47:58,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:47:58,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:47:58,235 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:47:58,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:47:58,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:47:58,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:47:58,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:47:58,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:47:58,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:47:58,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:47:58,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:47:58,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:47:58,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:47:58,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:47:58,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:47:58,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:47:58,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:47:58,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:47:58,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:47:58,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:47:58,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:47:58,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:47:58,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:47:58,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:47:58,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:47:58,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:47:58,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:47:58,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:47:58,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:47:58,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:47:58,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:47:58,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:47:58,745 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:47:58,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-11-09 12:47:58,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9558d0db6/303d882926054552ad8ff08389053500/FLAG4de374a46 [2020-11-09 12:47:59,709 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:47:59,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-11-09 12:47:59,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9558d0db6/303d882926054552ad8ff08389053500/FLAG4de374a46 [2020-11-09 12:47:59,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9558d0db6/303d882926054552ad8ff08389053500 [2020-11-09 12:47:59,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:47:59,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:47:59,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:47:59,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:47:59,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:47:59,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:47:59" (1/1) ... [2020-11-09 12:47:59,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcdad10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:47:59, skipping insertion in model container [2020-11-09 12:47:59,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:47:59" (1/1) ... [2020-11-09 12:47:59,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:48:00,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:48:00,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:48:00,501 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:48:00,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:48:00,688 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:48:00,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00 WrapperNode [2020-11-09 12:48:00,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:48:00,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:48:00,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:48:00,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:48:00,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:48:00,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:48:00,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:48:00,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:48:00,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (1/1) ... [2020-11-09 12:48:00,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:48:00,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:48:00,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:48:00,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:48:00,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (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 12:48:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:48:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:48:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:48:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:48:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:48:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:48:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:48:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:48:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:48:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:48:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:48:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:48:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:48:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:48:00,864 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 12:48:01,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:48:01,273 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:48:01,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:48:01 BoogieIcfgContainer [2020-11-09 12:48:01,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:48:01,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:48:01,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:48:01,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:48:01,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:47:59" (1/3) ... [2020-11-09 12:48:01,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210a248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:48:01, skipping insertion in model container [2020-11-09 12:48:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:00" (2/3) ... [2020-11-09 12:48:01,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210a248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:48:01, skipping insertion in model container [2020-11-09 12:48:01,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:48:01" (3/3) ... [2020-11-09 12:48:01,288 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-11-09 12:48:01,307 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:48:01,308 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:48:01,313 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:48:01,314 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:48:01,353 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,357 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,357 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,374 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,376 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:01,383 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:48:01,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:48:01,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:48:01,426 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:48:01,427 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:48:01,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:48:01,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:48:01,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:48:01,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:48:01,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:48:01,442 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:48:01,444 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:01,448 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:01,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:01,500 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:48:01,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:48:01,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 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. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 12:48:01,508 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 12:48:04,633 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-09 12:48:04,868 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-09 12:48:05,220 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 12:48:05,335 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 12:48:05,575 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 12:48:05,681 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 12:48:05,860 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:05,987 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:06,094 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:06,202 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:06,209 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-09 12:48:06,209 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-09 12:48:06,217 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:48:06,244 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-09 12:48:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-09 12:48:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:48:06,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:06,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:06,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:06,263 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-11-09 12:48:06,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:06,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614539869] [2020-11-09 12:48:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:06,469 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 12:48:06,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614539869] [2020-11-09 12:48:06,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:06,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:48:06,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377157498] [2020-11-09 12:48:06,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:48:06,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:06,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:48:06,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:48:06,520 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-09 12:48:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:06,576 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-09 12:48:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:48:06,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:48:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:06,606 INFO L225 Difference]: With dead ends: 274 [2020-11-09 12:48:06,606 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 12:48:06,608 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 12:48:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 12:48:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 12:48:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 12:48:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-09 12:48:06,713 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-09 12:48:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:06,714 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-09 12:48:06,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:48:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-09 12:48:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:48:06,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:06,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:06,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:48:06,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:06,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:06,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-11-09 12:48:06,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:06,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673225556] [2020-11-09 12:48:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:06,946 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 12:48:06,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673225556] [2020-11-09 12:48:06,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:06,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:48:06,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762139776] [2020-11-09 12:48:06,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:48:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:48:06,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:48:06,951 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-09 12:48:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,000 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-11-09 12:48:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:07,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:48:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,007 INFO L225 Difference]: With dead ends: 250 [2020-11-09 12:48:07,008 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 12:48:07,010 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 12:48:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 12:48:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 12:48:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 12:48:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-11-09 12:48:07,043 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-11-09 12:48:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,043 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-11-09 12:48:07,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:48:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-11-09 12:48:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:48:07,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:48:07,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash -119834399, now seen corresponding path program 1 times [2020-11-09 12:48:07,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877495244] [2020-11-09 12:48:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,168 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 12:48:07,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877495244] [2020-11-09 12:48:07,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:07,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653530913] [2020-11-09 12:48:07,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:07,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:07,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:07,171 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-11-09 12:48:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,238 INFO L93 Difference]: Finished difference Result 220 states and 576 transitions. [2020-11-09 12:48:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:48:07,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-09 12:48:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,241 INFO L225 Difference]: With dead ends: 220 [2020-11-09 12:48:07,241 INFO L226 Difference]: Without dead ends: 184 [2020-11-09 12:48:07,242 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 12:48:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-09 12:48:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-11-09 12:48:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-09 12:48:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 492 transitions. [2020-11-09 12:48:07,254 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 492 transitions. Word has length 10 [2020-11-09 12:48:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,254 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 492 transitions. [2020-11-09 12:48:07,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 492 transitions. [2020-11-09 12:48:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:48:07,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:48:07,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 83805114, now seen corresponding path program 1 times [2020-11-09 12:48:07,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92871956] [2020-11-09 12:48:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,325 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 12:48:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92871956] [2020-11-09 12:48:07,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:07,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488655894] [2020-11-09 12:48:07,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:07,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:07,329 INFO L87 Difference]: Start difference. First operand 184 states and 492 transitions. Second operand 5 states. [2020-11-09 12:48:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,393 INFO L93 Difference]: Finished difference Result 241 states and 629 transitions. [2020-11-09 12:48:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:07,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 12:48:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,401 INFO L225 Difference]: With dead ends: 241 [2020-11-09 12:48:07,401 INFO L226 Difference]: Without dead ends: 142 [2020-11-09 12:48:07,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:48:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-09 12:48:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-09 12:48:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-09 12:48:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-11-09 12:48:07,409 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 11 [2020-11-09 12:48:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,410 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-11-09 12:48:07,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-11-09 12:48:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:48:07,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:48:07,413 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash -976750188, now seen corresponding path program 1 times [2020-11-09 12:48:07,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712087028] [2020-11-09 12:48:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,482 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 12:48:07,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712087028] [2020-11-09 12:48:07,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:07,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765112007] [2020-11-09 12:48:07,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:07,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:07,485 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 5 states. [2020-11-09 12:48:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,537 INFO L93 Difference]: Finished difference Result 172 states and 419 transitions. [2020-11-09 12:48:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:07,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 12:48:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,539 INFO L225 Difference]: With dead ends: 172 [2020-11-09 12:48:07,539 INFO L226 Difference]: Without dead ends: 76 [2020-11-09 12:48:07,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:48:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-09 12:48:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-09 12:48:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-09 12:48:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-11-09 12:48:07,543 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-11-09 12:48:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,543 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-11-09 12:48:07,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-11-09 12:48:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:48:07,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:48:07,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-11-09 12:48:07,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498589643] [2020-11-09 12:48:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,616 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 12:48:07,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498589643] [2020-11-09 12:48:07,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:07,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809433542] [2020-11-09 12:48:07,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:48:07,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:48:07,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:48:07,618 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-11-09 12:48:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,653 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-11-09 12:48:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:07,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:48:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,654 INFO L225 Difference]: With dead ends: 87 [2020-11-09 12:48:07,654 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 12:48:07,655 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 12:48:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 12:48:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-09 12:48:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 12:48:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-11-09 12:48:07,658 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-11-09 12:48:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,658 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-11-09 12:48:07,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:48:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-11-09 12:48:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:48:07,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:48:07,659 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-11-09 12:48:07,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823746133] [2020-11-09 12:48:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,726 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 12:48:07,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823746133] [2020-11-09 12:48:07,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:48:07,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335103598] [2020-11-09 12:48:07,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:07,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:07,728 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-11-09 12:48:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,776 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-11-09 12:48:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:07,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:48:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,777 INFO L225 Difference]: With dead ends: 62 [2020-11-09 12:48:07,777 INFO L226 Difference]: Without dead ends: 47 [2020-11-09 12:48:07,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:48:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-09 12:48:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-09 12:48:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 12:48:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-11-09 12:48:07,780 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-11-09 12:48:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,781 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-11-09 12:48:07,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-11-09 12:48:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:48:07,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:48:07,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-11-09 12:48:07,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653896858] [2020-11-09 12:48:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,859 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 12:48:07,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653896858] [2020-11-09 12:48:07,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:48:07,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091004678] [2020-11-09 12:48:07,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:48:07,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:48:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:48:07,862 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-11-09 12:48:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:07,920 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-11-09 12:48:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:48:07,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:48:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:07,921 INFO L225 Difference]: With dead ends: 40 [2020-11-09 12:48:07,921 INFO L226 Difference]: Without dead ends: 34 [2020-11-09 12:48:07,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:48:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-09 12:48:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-09 12:48:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-09 12:48:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-11-09 12:48:07,923 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-11-09 12:48:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:07,924 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-11-09 12:48:07,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:48:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-11-09 12:48:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:48:07,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:07,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:07,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:48:07,925 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:07,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-11-09 12:48:07,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:07,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723398654] [2020-11-09 12:48:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:07,995 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 12:48:07,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723398654] [2020-11-09 12:48:07,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:07,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:48:07,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912803045] [2020-11-09 12:48:07,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:07,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:07,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:07,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:07,998 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-11-09 12:48:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:08,026 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-11-09 12:48:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:08,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 12:48:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:08,027 INFO L225 Difference]: With dead ends: 33 [2020-11-09 12:48:08,027 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:48:08,028 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 12:48:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:48:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:48:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:48:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:48:08,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:48:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:08,029 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:48:08,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:48:08,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:48:08,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:48:08,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:48:08 BasicIcfg [2020-11-09 12:48:08,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:48:08,035 INFO L168 Benchmark]: Toolchain (without parser) took 8077.61 ms. Allocated memory was 125.8 MB in the beginning and 192.9 MB in the end (delta: 67.1 MB). Free memory was 99.7 MB in the beginning and 163.0 MB in the end (delta: -63.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:08,035 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:48:08,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.23 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 99.1 MB in the beginning and 135.9 MB in the end (delta: -36.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:08,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 160.4 MB. Free memory was 135.9 MB in the beginning and 133.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:08,038 INFO L168 Benchmark]: Boogie Preprocessor took 29.19 ms. Allocated memory is still 160.4 MB. Free memory was 133.9 MB in the beginning and 132.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:08,039 INFO L168 Benchmark]: RCFGBuilder took 505.66 ms. Allocated memory is still 160.4 MB. Free memory was 132.4 MB in the beginning and 110.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:08,039 INFO L168 Benchmark]: TraceAbstraction took 6754.64 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 109.8 MB in the beginning and 163.0 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:48:08,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 725.23 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 99.1 MB in the beginning and 135.9 MB in the end (delta: -36.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 160.4 MB. Free memory was 135.9 MB in the beginning and 133.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.19 ms. Allocated memory is still 160.4 MB. Free memory was 133.9 MB in the beginning and 132.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 505.66 ms. Allocated memory is still 160.4 MB. Free memory was 132.4 MB in the beginning and 110.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6754.64 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 109.8 MB in the beginning and 163.0 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 166 SDtfs, 183 SDslu, 266 SDs, 0 SdLazy, 145 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...