/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_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:21:15,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:21:15,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:21:15,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:21:15,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:21:15,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:21:15,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:21:15,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:21:15,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:21:15,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:21:15,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:21:15,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:21:15,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:21:15,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:21:15,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:21:15,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:21:15,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:21:15,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:21:15,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:21:15,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:21:15,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:21:15,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:21:15,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:21:15,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:21:15,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 12:21:15,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 12:21:15,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 12:21:15,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 12:21:15,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 12:21:15,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 12:21:15,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:21:15,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:21:15,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:21:15,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:21:15,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:21:15,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:21:15,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:21:15,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:21:15,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:21:15,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:21:15,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:21:15,565 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 12:21:15,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:21:15,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:21:15,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:21:15,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:21:15,626 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:21:15,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:21:15,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:21:15,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:21:15,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:21:15,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:21:15,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:21:15,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:21:15,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:21:15,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:21:15,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:21:15,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:21:15,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:21:15,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:21:15,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:21:15,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:21:15,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:21:15,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:21:15,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:21:15,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:21:15,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:21:15,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:21:15,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:21:15,632 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:21:15,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:21:15,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:21:15,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:21:16,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:21:16,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:21:16,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:21:16,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:21:16,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:21:16,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-11-12 12:21:16,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eebf6b2b0/5dfdf1ba2df544089274a5c3124fc56b/FLAG4418e6a60 [2020-11-12 12:21:16,955 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:21:16,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-11-12 12:21:16,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eebf6b2b0/5dfdf1ba2df544089274a5c3124fc56b/FLAG4418e6a60 [2020-11-12 12:21:17,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eebf6b2b0/5dfdf1ba2df544089274a5c3124fc56b [2020-11-12 12:21:17,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:21:17,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:21:17,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:17,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:21:17,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:21:17,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:17,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282827af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17, skipping insertion in model container [2020-11-12 12:21:17,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:17,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:21:17,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:21:17,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:17,808 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:21:17,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:17,982 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:21:17,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17 WrapperNode [2020-11-12 12:21:17,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:17,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:17,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:21:17,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:21:17,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:18,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:21:18,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:21:18,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:21:18,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (1/1) ... [2020-11-12 12:21:18,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:21:18,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:21:18,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:21:18,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:21:18,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (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 12:21:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:21:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:21:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:21:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:21:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:21:18,166 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:21:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:21:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:21:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:21:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:21:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:21:18,170 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 12:21:18,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:21:18,801 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:21:18,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:18 BoogieIcfgContainer [2020-11-12 12:21:18,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:21:18,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:21:18,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:21:18,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:21:18,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:21:17" (1/3) ... [2020-11-12 12:21:18,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d80f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:18, skipping insertion in model container [2020-11-12 12:21:18,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:17" (2/3) ... [2020-11-12 12:21:18,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d80f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:18, skipping insertion in model container [2020-11-12 12:21:18,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:18" (3/3) ... [2020-11-12 12:21:18,814 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-11-12 12:21:18,830 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:21:18,830 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:21:18,834 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:21:18,835 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:21:18,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,882 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,894 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,910 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:18,926 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:21:18,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:21:18,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:21:18,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:21:18,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:21:18,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:21:18,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:21:18,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:21:18,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:21:18,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:21:18,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:21:19,798 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 12:21:20,740 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 938ms [2020-11-12 12:21:20,786 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 12:21:20,897 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 12:21:20,932 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 12:21:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:21:20,969 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:20,970 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 12:21:20,971 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-11-12 12:21:20,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:20,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330816526] [2020-11-12 12:21:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:21,627 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 12:21:21,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330816526] [2020-11-12 12:21:21,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:21,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:21,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252201505] [2020-11-12 12:21:21,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:21,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:21,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:21,678 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 12:21:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:22,031 INFO L93 Difference]: Finished difference Result 12001 states and 14450 transitions. [2020-11-12 12:21:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:22,034 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 12:21:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:22,075 INFO L225 Difference]: With dead ends: 12001 [2020-11-12 12:21:22,076 INFO L226 Difference]: Without dead ends: 3287 [2020-11-12 12:21:22,078 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:21:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-11-12 12:21:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3287. [2020-11-12 12:21:22,298 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 12:21:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4207 transitions. [2020-11-12 12:21:22,312 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4207 transitions. Word has length 42 [2020-11-12 12:21:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:22,313 INFO L481 AbstractCegarLoop]: Abstraction has 3287 states and 4207 transitions. [2020-11-12 12:21:22,313 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 12:21:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4207 transitions. [2020-11-12 12:21:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:21:22,320 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:22,321 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 12:21:22,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:21:22,321 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:22,324 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-11-12 12:21:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:22,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101438949] [2020-11-12 12:21:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:22,674 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 12:21:22,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101438949] [2020-11-12 12:21:22,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:22,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:22,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315381536] [2020-11-12 12:21:22,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:22,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:22,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:22,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:22,682 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 12:21:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:23,009 INFO L93 Difference]: Finished difference Result 3909 states and 5004 transitions. [2020-11-12 12:21:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:23,011 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 12:21:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:23,020 INFO L225 Difference]: With dead ends: 3909 [2020-11-12 12:21:23,021 INFO L226 Difference]: Without dead ends: 1698 [2020-11-12 12:21:23,022 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2020-11-12 12:21:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2020-11-12 12:21:23,066 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 12:21:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2038 transitions. [2020-11-12 12:21:23,073 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2038 transitions. Word has length 44 [2020-11-12 12:21:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:23,074 INFO L481 AbstractCegarLoop]: Abstraction has 1698 states and 2038 transitions. [2020-11-12 12:21:23,074 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 12:21:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2038 transitions. [2020-11-12 12:21:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:21:23,081 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:23,081 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 12:21:23,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:21:23,082 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:23,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1249634671, now seen corresponding path program 1 times [2020-11-12 12:21:23,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:23,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868857595] [2020-11-12 12:21:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:23,331 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 12:21:23,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868857595] [2020-11-12 12:21:23,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:23,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:23,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974846913] [2020-11-12 12:21:23,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:23,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:23,334 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 12:21:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:23,660 INFO L93 Difference]: Finished difference Result 2225 states and 2722 transitions. [2020-11-12 12:21:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:23,661 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 12:21:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:23,667 INFO L225 Difference]: With dead ends: 2225 [2020-11-12 12:21:23,667 INFO L226 Difference]: Without dead ends: 1087 [2020-11-12 12:21:23,668 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-11-12 12:21:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2020-11-12 12:21:23,694 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 12:21:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1254 transitions. [2020-11-12 12:21:23,699 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1254 transitions. Word has length 47 [2020-11-12 12:21:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:23,699 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1254 transitions. [2020-11-12 12:21:23,699 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 12:21:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1254 transitions. [2020-11-12 12:21:23,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:21:23,702 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:23,702 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 12:21:23,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:21:23,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:23,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:23,703 INFO L82 PathProgramCache]: Analyzing trace with hash 994042126, now seen corresponding path program 1 times [2020-11-12 12:21:23,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:23,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865248116] [2020-11-12 12:21:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:23,901 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 12:21:23,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865248116] [2020-11-12 12:21:23,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:23,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:23,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006085627] [2020-11-12 12:21:23,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:23,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:23,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:23,908 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 12:21:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:24,082 INFO L93 Difference]: Finished difference Result 1149 states and 1299 transitions. [2020-11-12 12:21:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:21:24,083 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 12:21:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:24,088 INFO L225 Difference]: With dead ends: 1149 [2020-11-12 12:21:24,088 INFO L226 Difference]: Without dead ends: 1050 [2020-11-12 12:21:24,089 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 12:21:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-11-12 12:21:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2020-11-12 12:21:24,114 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 12:21:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1200 transitions. [2020-11-12 12:21:24,118 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1200 transitions. Word has length 49 [2020-11-12 12:21:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:24,119 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 1200 transitions. [2020-11-12 12:21:24,119 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 12:21:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1200 transitions. [2020-11-12 12:21:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:21:24,122 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:24,122 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 12:21:24,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:21:24,123 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1503390736, now seen corresponding path program 1 times [2020-11-12 12:21:24,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:24,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527865293] [2020-11-12 12:21:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:24,276 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 12:21:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527865293] [2020-11-12 12:21:24,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:24,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:24,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938326286] [2020-11-12 12:21:24,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:24,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:24,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:24,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:24,279 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 12:21:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:24,503 INFO L93 Difference]: Finished difference Result 961 states and 1062 transitions. [2020-11-12 12:21:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:24,504 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 12:21:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:24,509 INFO L225 Difference]: With dead ends: 961 [2020-11-12 12:21:24,510 INFO L226 Difference]: Without dead ends: 830 [2020-11-12 12:21:24,510 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:21:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-11-12 12:21:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2020-11-12 12:21:24,536 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 12:21:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 904 transitions. [2020-11-12 12:21:24,540 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 904 transitions. Word has length 50 [2020-11-12 12:21:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:24,541 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 904 transitions. [2020-11-12 12:21:24,541 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 12:21:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 904 transitions. [2020-11-12 12:21:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:21:24,544 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:24,544 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 12:21:24,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:21:24,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash 483719496, now seen corresponding path program 1 times [2020-11-12 12:21:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:24,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682745527] [2020-11-12 12:21:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:24,779 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 12:21:24,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682745527] [2020-11-12 12:21:24,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:24,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:21:24,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258483815] [2020-11-12 12:21:24,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:21:24,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:21:24,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:21:24,784 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 12:21:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:25,042 INFO L93 Difference]: Finished difference Result 506 states and 523 transitions. [2020-11-12 12:21:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:25,043 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 12:21:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:25,047 INFO L225 Difference]: With dead ends: 506 [2020-11-12 12:21:25,047 INFO L226 Difference]: Without dead ends: 374 [2020-11-12 12:21:25,048 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-11-12 12:21:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-11-12 12:21:25,058 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 12:21:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 373 transitions. [2020-11-12 12:21:25,060 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 373 transitions. Word has length 51 [2020-11-12 12:21:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:25,061 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 373 transitions. [2020-11-12 12:21:25,061 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 12:21:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 373 transitions. [2020-11-12 12:21:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:21:25,062 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:25,063 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 12:21:25,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:21:25,063 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -320762935, now seen corresponding path program 1 times [2020-11-12 12:21:25,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:25,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740420869] [2020-11-12 12:21:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:25,250 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 12:21:25,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740420869] [2020-11-12 12:21:25,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:25,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:25,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316276481] [2020-11-12 12:21:25,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:25,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:25,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:25,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:25,253 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 12:21:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:25,384 INFO L93 Difference]: Finished difference Result 266 states and 265 transitions. [2020-11-12 12:21:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:21:25,385 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 12:21:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:25,385 INFO L225 Difference]: With dead ends: 266 [2020-11-12 12:21:25,385 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:21:25,386 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 12:21:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:21:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:21:25,386 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 12:21:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:21:25,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:21:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:25,387 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:21:25,387 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 12:21:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:21:25,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:21:25,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:21:25,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:21:25 BasicIcfg [2020-11-12 12:21:25,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:21:25,396 INFO L168 Benchmark]: Toolchain (without parser) took 8195.41 ms. Allocated memory was 302.0 MB in the beginning and 721.4 MB in the end (delta: 419.4 MB). Free memory was 276.9 MB in the beginning and 575.9 MB in the end (delta: -299.0 MB). Peak memory consumption was 122.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,396 INFO L168 Benchmark]: CDTParser took 0.27 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 12:21:25,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.51 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.6 MB in the end (delta: 30.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.30 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,399 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,400 INFO L168 Benchmark]: RCFGBuilder took 738.44 ms. Allocated memory is still 302.0 MB. Free memory was 242.1 MB in the beginning and 263.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,401 INFO L168 Benchmark]: TraceAbstraction took 6586.90 ms. Allocated memory was 302.0 MB in the beginning and 721.4 MB in the end (delta: 419.4 MB). Free memory was 263.8 MB in the beginning and 575.9 MB in the end (delta: -312.1 MB). Peak memory consumption was 107.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:25,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 774.51 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.6 MB in the end (delta: 30.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.30 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 738.44 ms. Allocated memory is still 302.0 MB. Free memory was 242.1 MB in the beginning and 263.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6586.90 ms. Allocated memory was 302.0 MB in the beginning and 721.4 MB in the end (delta: 419.4 MB). Free memory was 263.8 MB in the beginning and 575.9 MB in the end (delta: -312.1 MB). Peak memory consumption was 107.4 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: 6.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 442 SDtfs, 682 SDslu, 1601 SDs, 0 SdLazy, 211 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.8s 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: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s 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...