/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:21:26,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:21:26,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:21:26,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:21:26,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:21:26,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:21:26,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:21:26,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:21:26,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:21:26,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:21:26,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:21:26,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:21:26,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:21:26,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:21:26,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:21:26,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:21:26,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:21:26,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:21:26,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:21:26,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:21:26,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:21:26,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:21:26,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:21:26,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:21:26,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:21:26,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:21:26,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:21:26,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:21:26,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:21:26,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:21:26,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:21:26,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:21:26,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:21:26,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:21:26,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:21:26,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:21:26,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf [2020-11-12 12:21:27,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:21:27,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:21:27,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:21:27,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:21:27,029 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:21:27,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:21:27,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:21:27,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:21:27,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:21:27,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:21:27,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:21:27,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:21:27,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:21:27,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:21:27,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:21:27,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:21:27,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:21:27,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:21:27,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:21:27,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:21:27,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:21:27,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:21:27,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:21:27,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:21:27,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:21:27,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:21:27,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:21:27,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:21:27,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:21:27,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:21:27,035 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:21:27,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:21:27,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:21:27,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:21:27,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:21:27,485 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:21:27,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-11-12 12:21:27,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb970cea/617a5402626a4318bcac62b5d888ad26/FLAG78509cb64 [2020-11-12 12:21:28,359 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:21:28,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-11-12 12:21:28,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb970cea/617a5402626a4318bcac62b5d888ad26/FLAG78509cb64 [2020-11-12 12:21:28,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb970cea/617a5402626a4318bcac62b5d888ad26 [2020-11-12 12:21:28,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:21:28,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:21:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:21:28,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:21:28,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad72201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28, skipping insertion in model container [2020-11-12 12:21:28,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:21:28,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:21:29,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:29,213 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:21:29,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:29,392 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:21:29,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29 WrapperNode [2020-11-12 12:21:29,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:29,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:29,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:21:29,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:21:29,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:29,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:21:29,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:21:29,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:21:29,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... [2020-11-12 12:21:29,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:21:29,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:21:29,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:21:29,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:21:29,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:21:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:21:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:21:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:21:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:21:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:21:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:21:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:21:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:21:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:21:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:21:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:21:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:21:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:21:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:21:29,611 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:21:30,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:21:30,204 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:21:30,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:30 BoogieIcfgContainer [2020-11-12 12:21:30,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:21:30,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:21:30,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:21:30,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:21:30,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:21:28" (1/3) ... [2020-11-12 12:21:30,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22138bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:30, skipping insertion in model container [2020-11-12 12:21:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:29" (2/3) ... [2020-11-12 12:21:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22138bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:30, skipping insertion in model container [2020-11-12 12:21:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:30" (3/3) ... [2020-11-12 12:21:30,218 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-11-12 12:21:30,235 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:21:30,235 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:21:30,240 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:21:30,242 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:21:30,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,291 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,307 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,308 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:30,323 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:21:30,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:21:30,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:21:30,378 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:21:30,378 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:21:30,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:21:30,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:21:30,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:21:30,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:21:30,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:21:30,391 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:21:31,053 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,927 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 870ms [2020-11-12 12:21:31,971 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,120 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:21:32,173 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:32,174 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:32,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:32,181 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-11-12 12:21:32,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:32,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077509544] [2020-11-12 12:21:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:32,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077509544] [2020-11-12 12:21:32,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:32,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:32,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042415951] [2020-11-12 12:21:32,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:32,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:32,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:32,655 INFO L87 Difference]: Start difference. First operand has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:33,004 INFO L93 Difference]: Finished difference Result 12001 states and 14450 transitions. [2020-11-12 12:21:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:33,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 12:21:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:33,050 INFO L225 Difference]: With dead ends: 12001 [2020-11-12 12:21:33,050 INFO L226 Difference]: Without dead ends: 3287 [2020-11-12 12:21:33,053 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:21:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-11-12 12:21:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3287. [2020-11-12 12:21:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3077 states have (on average 1.3672408189795255) internal successors, (4207), 3286 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4207 transitions. [2020-11-12 12:21:33,305 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4207 transitions. Word has length 42 [2020-11-12 12:21:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:33,306 INFO L481 AbstractCegarLoop]: Abstraction has 3287 states and 4207 transitions. [2020-11-12 12:21:33,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4207 transitions. [2020-11-12 12:21:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:21:33,317 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:33,318 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:33,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:21:33,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-11-12 12:21:33,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:33,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704764207] [2020-11-12 12:21:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:33,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704764207] [2020-11-12 12:21:33,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:33,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:33,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810201121] [2020-11-12 12:21:33,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:33,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:33,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:33,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:33,601 INFO L87 Difference]: Start difference. First operand 3287 states and 4207 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:33,817 INFO L93 Difference]: Finished difference Result 3909 states and 5004 transitions. [2020-11-12 12:21:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:21:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:33,826 INFO L225 Difference]: With dead ends: 3909 [2020-11-12 12:21:33,827 INFO L226 Difference]: Without dead ends: 1698 [2020-11-12 12:21:33,828 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2020-11-12 12:21:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2020-11-12 12:21:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1578 states have (on average 1.291508238276299) internal successors, (2038), 1697 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2038 transitions. [2020-11-12 12:21:33,913 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2038 transitions. Word has length 44 [2020-11-12 12:21:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:33,914 INFO L481 AbstractCegarLoop]: Abstraction has 1698 states and 2038 transitions. [2020-11-12 12:21:33,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2038 transitions. [2020-11-12 12:21:33,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:21:33,917 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:33,918 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:33,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:21:33,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1249634671, now seen corresponding path program 1 times [2020-11-12 12:21:33,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:33,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916825473] [2020-11-12 12:21:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:34,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916825473] [2020-11-12 12:21:34,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:34,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:34,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654896262] [2020-11-12 12:21:34,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:34,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:34,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:34,122 INFO L87 Difference]: Start difference. First operand 1698 states and 2038 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:34,353 INFO L93 Difference]: Finished difference Result 2225 states and 2722 transitions. [2020-11-12 12:21:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-12 12:21:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:34,360 INFO L225 Difference]: With dead ends: 2225 [2020-11-12 12:21:34,360 INFO L226 Difference]: Without dead ends: 1087 [2020-11-12 12:21:34,360 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-11-12 12:21:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2020-11-12 12:21:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1007 states have (on average 1.2452830188679245) internal successors, (1254), 1086 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1254 transitions. [2020-11-12 12:21:34,398 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1254 transitions. Word has length 47 [2020-11-12 12:21:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:34,400 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1254 transitions. [2020-11-12 12:21:34,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1254 transitions. [2020-11-12 12:21:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:21:34,403 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:34,404 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:34,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:21:34,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:34,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 994042126, now seen corresponding path program 1 times [2020-11-12 12:21:34,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:34,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955093841] [2020-11-12 12:21:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:34,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955093841] [2020-11-12 12:21:34,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:34,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:34,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134098906] [2020-11-12 12:21:34,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:34,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:34,609 INFO L87 Difference]: Start difference. First operand 1087 states and 1254 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:34,751 INFO L93 Difference]: Finished difference Result 1149 states and 1299 transitions. [2020-11-12 12:21:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:21:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-12 12:21:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:34,756 INFO L225 Difference]: With dead ends: 1149 [2020-11-12 12:21:34,757 INFO L226 Difference]: Without dead ends: 1050 [2020-11-12 12:21:34,757 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-12 12:21:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-11-12 12:21:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2020-11-12 12:21:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 972 states have (on average 1.2345679012345678) internal successors, (1200), 1049 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1200 transitions. [2020-11-12 12:21:34,782 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1200 transitions. Word has length 49 [2020-11-12 12:21:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:34,783 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 1200 transitions. [2020-11-12 12:21:34,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1200 transitions. [2020-11-12 12:21:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:21:34,788 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:34,788 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:34,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:21:34,789 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1503390736, now seen corresponding path program 1 times [2020-11-12 12:21:34,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:34,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316627988] [2020-11-12 12:21:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:34,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316627988] [2020-11-12 12:21:34,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:34,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:34,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494173162] [2020-11-12 12:21:34,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:34,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:34,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:34,968 INFO L87 Difference]: Start difference. First operand 1050 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:35,111 INFO L93 Difference]: Finished difference Result 961 states and 1062 transitions. [2020-11-12 12:21:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:21:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:35,116 INFO L225 Difference]: With dead ends: 961 [2020-11-12 12:21:35,116 INFO L226 Difference]: Without dead ends: 830 [2020-11-12 12:21:35,117 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:21:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-11-12 12:21:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2020-11-12 12:21:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 767 states have (on average 1.1786179921773141) internal successors, (904), 829 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 904 transitions. [2020-11-12 12:21:35,137 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 904 transitions. Word has length 50 [2020-11-12 12:21:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:35,140 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 904 transitions. [2020-11-12 12:21:35,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 904 transitions. [2020-11-12 12:21:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:21:35,143 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:35,144 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:35,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:21:35,144 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:35,145 INFO L82 PathProgramCache]: Analyzing trace with hash 483719496, now seen corresponding path program 1 times [2020-11-12 12:21:35,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:35,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195367756] [2020-11-12 12:21:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195367756] [2020-11-12 12:21:35,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:35,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:21:35,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494451785] [2020-11-12 12:21:35,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:21:35,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:21:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:21:35,320 INFO L87 Difference]: Start difference. First operand 830 states and 904 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:35,464 INFO L93 Difference]: Finished difference Result 506 states and 523 transitions. [2020-11-12 12:21:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 12:21:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:35,467 INFO L225 Difference]: With dead ends: 506 [2020-11-12 12:21:35,467 INFO L226 Difference]: Without dead ends: 374 [2020-11-12 12:21:35,468 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-11-12 12:21:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-11-12 12:21:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 347 states have (on average 1.07492795389049) internal successors, (373), 373 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 373 transitions. [2020-11-12 12:21:35,478 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 373 transitions. Word has length 51 [2020-11-12 12:21:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:35,478 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 373 transitions. [2020-11-12 12:21:35,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 373 transitions. [2020-11-12 12:21:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:21:35,480 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:35,480 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:35,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:21:35,480 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash -320762935, now seen corresponding path program 1 times [2020-11-12 12:21:35,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:35,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443923370] [2020-11-12 12:21:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:35,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443923370] [2020-11-12 12:21:35,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:35,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:35,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472551886] [2020-11-12 12:21:35,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:35,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:35,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:35,614 INFO L87 Difference]: Start difference. First operand 374 states and 373 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:35,716 INFO L93 Difference]: Finished difference Result 266 states and 265 transitions. [2020-11-12 12:21:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:21:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-12 12:21:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:35,717 INFO L225 Difference]: With dead ends: 266 [2020-11-12 12:21:35,717 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:21:35,717 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:21:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:21:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:21:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:21:35,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:21:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:35,719 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:21:35,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:21:35,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:21:35,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:21:35,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:21:35 BasicIcfg [2020-11-12 12:21:35,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:21:35,728 INFO L168 Benchmark]: Toolchain (without parser) took 7072.14 ms. Allocated memory was 302.0 MB in the beginning and 725.6 MB in the end (delta: 423.6 MB). Free memory was 277.2 MB in the beginning and 606.0 MB in the end (delta: -328.8 MB). Peak memory consumption was 96.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,730 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:21:35,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.39 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,738 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,738 INFO L168 Benchmark]: RCFGBuilder took 724.55 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 263.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,739 INFO L168 Benchmark]: TraceAbstraction took 5515.44 ms. Allocated memory was 302.0 MB in the beginning and 725.6 MB in the end (delta: 423.6 MB). Free memory was 263.7 MB in the beginning and 606.0 MB in the end (delta: -342.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:35,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 729.39 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 724.55 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 263.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5515.44 ms. Allocated memory was 302.0 MB in the beginning and 725.6 MB in the end (delta: 423.6 MB). Free memory was 263.7 MB in the beginning and 606.0 MB in the end (delta: -342.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 442 SDtfs, 682 SDslu, 1601 SDs, 0 SdLazy, 211 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28769occurred 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: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...