/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-Delay.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:20:56,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:20:56,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:20:56,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:20:56,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:20:56,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:20:56,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:20:56,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:20:56,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:20:56,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:20:56,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:20:56,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:20:56,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:20:56,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:20:56,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:20:56,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:20:56,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:20:56,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:20:56,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:20:56,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:20:56,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:20:56,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:20:56,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:20:56,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:20:56,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 06:20:56,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 06:20:56,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 06:20:56,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 06:20:56,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 06:20:56,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 06:20:56,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:20:56,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:20:56,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:20:56,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:20:56,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:20:56,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:20:56,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:20:56,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:20:56,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:20:56,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:20:56,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:20:56,719 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-Delay.epf [2020-11-12 06:20:56,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:20:56,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:20:56,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:20:56,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:20:56,749 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:20:56,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:20:56,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:20:56,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:20:56,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:20:56,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:20:56,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:20:56,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:20:56,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:20:56,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:20:56,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:20:56,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:20:56,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:20:56,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:20:56,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:20:56,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:20:56,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:20:56,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:20:56,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:20:56,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:20:56,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:20:56,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:20:56,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:20:56,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:20:56,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:20:56,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:20:56,755 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:20:57,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:20:57,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:20:57,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:20:57,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:20:57,160 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:20:57,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-12 06:20:57,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f543f79a/96a7da9a0df743e58f0e2272da0ef513/FLAGca8c10559 [2020-11-12 06:20:58,075 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:20:58,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-12 06:20:58,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f543f79a/96a7da9a0df743e58f0e2272da0ef513/FLAGca8c10559 [2020-11-12 06:20:58,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f543f79a/96a7da9a0df743e58f0e2272da0ef513 [2020-11-12 06:20:58,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:20:58,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:20:58,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:20:58,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:20:58,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:20:58,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:58,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a20ebfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58, skipping insertion in model container [2020-11-12 06:20:58,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:58,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:20:58,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:20:58,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:20:58,815 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:20:58,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:20:58,962 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:20:58,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58 WrapperNode [2020-11-12 06:20:58,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:20:58,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:20:58,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:20:58,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:20:58,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:58,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:20:59,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:20:59,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:20:59,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:20:59,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (1/1) ... [2020-11-12 06:20:59,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:20:59,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:20:59,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:20:59,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:20:59,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (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 06:20:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:20:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:20:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:20:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:20:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:20:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:20:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:20:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:20:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:20:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:20:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:20:59,187 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 06:20:59,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:20:59,795 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:20:59,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:20:59 BoogieIcfgContainer [2020-11-12 06:20:59,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:20:59,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:20:59,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:20:59,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:20:59,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:20:58" (1/3) ... [2020-11-12 06:20:59,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d3206c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:20:59, skipping insertion in model container [2020-11-12 06:20:59,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:20:58" (2/3) ... [2020-11-12 06:20:59,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d3206c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:20:59, skipping insertion in model container [2020-11-12 06:20:59,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:20:59" (3/3) ... [2020-11-12 06:20:59,813 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-11-12 06:20:59,833 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:20:59,833 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:20:59,837 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:20:59,839 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:20:59,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,901 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,933 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,933 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:20:59,936 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:20:59,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:20:59,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:20:59,994 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:20:59,994 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:20:59,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:20:59,994 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:20:59,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:20:59,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:20:59,995 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:21:00,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 06:21:00,840 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 06:21:01,547 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 702ms [2020-11-12 06:21:01,582 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 06:21:01,691 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 9848 states, 9155 states have (on average 1.3974877116329874) internal successors, (12794), 9847 states have internal predecessors, (12794), 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 06:21:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9155 states have (on average 1.3974877116329874) internal successors, (12794), 9847 states have internal predecessors, (12794), 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 06:21:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 06:21:01,734 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:01,735 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 06:21:01,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:01,742 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-11-12 06:21:01,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:01,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26756915] [2020-11-12 06:21:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:02,248 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 06:21:02,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26756915] [2020-11-12 06:21:02,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:02,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:21:02,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687647206] [2020-11-12 06:21:02,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:21:02,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:21:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:21:02,284 INFO L87 Difference]: Start difference. First operand has 9848 states, 9155 states have (on average 1.3974877116329874) internal successors, (12794), 9847 states have internal predecessors, (12794), 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 06:21:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:02,631 INFO L93 Difference]: Finished difference Result 12200 states and 14908 transitions. [2020-11-12 06:21:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:21:02,633 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 06:21:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:02,683 INFO L225 Difference]: With dead ends: 12200 [2020-11-12 06:21:02,683 INFO L226 Difference]: Without dead ends: 3975 [2020-11-12 06:21:02,686 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:21:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2020-11-12 06:21:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3975. [2020-11-12 06:21:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3730 states have (on average 1.4621983914209116) internal successors, (5454), 3974 states have internal predecessors, (5454), 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 06:21:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5454 transitions. [2020-11-12 06:21:02,965 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5454 transitions. Word has length 42 [2020-11-12 06:21:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:02,967 INFO L481 AbstractCegarLoop]: Abstraction has 3975 states and 5454 transitions. [2020-11-12 06:21:02,968 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 06:21:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5454 transitions. [2020-11-12 06:21:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 06:21:02,979 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:02,979 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 06:21:02,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:21:02,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1163284558, now seen corresponding path program 1 times [2020-11-12 06:21:02,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:02,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819415905] [2020-11-12 06:21:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:03,262 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 06:21:03,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819415905] [2020-11-12 06:21:03,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:03,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:21:03,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958154876] [2020-11-12 06:21:03,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:21:03,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:21:03,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:21:03,267 INFO L87 Difference]: Start difference. First operand 3975 states and 5454 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 06:21:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:03,550 INFO L93 Difference]: Finished difference Result 5095 states and 7450 transitions. [2020-11-12 06:21:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:21:03,551 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 06:21:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:03,563 INFO L225 Difference]: With dead ends: 5095 [2020-11-12 06:21:03,564 INFO L226 Difference]: Without dead ends: 2316 [2020-11-12 06:21:03,565 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 06:21:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-11-12 06:21:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2020-11-12 06:21:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2176 states have (on average 1.4811580882352942) internal successors, (3223), 2315 states have internal predecessors, (3223), 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 06:21:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3223 transitions. [2020-11-12 06:21:03,630 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3223 transitions. Word has length 44 [2020-11-12 06:21:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:03,631 INFO L481 AbstractCegarLoop]: Abstraction has 2316 states and 3223 transitions. [2020-11-12 06:21:03,631 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 06:21:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3223 transitions. [2020-11-12 06:21:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:21:03,639 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:03,639 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 06:21:03,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:21:03,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1560628649, now seen corresponding path program 1 times [2020-11-12 06:21:03,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:03,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606184521] [2020-11-12 06:21:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:03,892 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 06:21:03,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606184521] [2020-11-12 06:21:03,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:03,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:21:03,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518234997] [2020-11-12 06:21:03,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:21:03,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:21:03,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:21:03,895 INFO L87 Difference]: Start difference. First operand 2316 states and 3223 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:04,090 INFO L93 Difference]: Finished difference Result 2772 states and 3740 transitions. [2020-11-12 06:21:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:21:04,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-12 06:21:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:04,101 INFO L225 Difference]: With dead ends: 2772 [2020-11-12 06:21:04,101 INFO L226 Difference]: Without dead ends: 2204 [2020-11-12 06:21:04,102 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 06:21:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2020-11-12 06:21:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2204. [2020-11-12 06:21:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2072 states have (on average 1.4744208494208495) internal successors, (3055), 2203 states have internal predecessors, (3055), 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 06:21:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3055 transitions. [2020-11-12 06:21:04,162 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3055 transitions. Word has length 47 [2020-11-12 06:21:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:04,163 INFO L481 AbstractCegarLoop]: Abstraction has 2204 states and 3055 transitions. [2020-11-12 06:21:04,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3055 transitions. [2020-11-12 06:21:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 06:21:04,167 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:04,167 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] [2020-11-12 06:21:04,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:21:04,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:04,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1321451508, now seen corresponding path program 1 times [2020-11-12 06:21:04,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:04,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511849974] [2020-11-12 06:21:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:04,403 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 06:21:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511849974] [2020-11-12 06:21:04,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:04,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:21:04,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953252189] [2020-11-12 06:21:04,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:21:04,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:04,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:21:04,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:21:04,408 INFO L87 Difference]: Start difference. First operand 2204 states and 3055 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 06:21:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:04,674 INFO L93 Difference]: Finished difference Result 2186 states and 2918 transitions. [2020-11-12 06:21:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:21:04,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2020-11-12 06:21:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:04,685 INFO L225 Difference]: With dead ends: 2186 [2020-11-12 06:21:04,686 INFO L226 Difference]: Without dead ends: 1603 [2020-11-12 06:21:04,686 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 06:21:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-11-12 06:21:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1603. [2020-11-12 06:21:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1513 states have (on average 1.4474553866490416) internal successors, (2190), 1602 states have internal predecessors, (2190), 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 06:21:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2190 transitions. [2020-11-12 06:21:04,735 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2190 transitions. Word has length 48 [2020-11-12 06:21:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:04,737 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 2190 transitions. [2020-11-12 06:21:04,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 06:21:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2190 transitions. [2020-11-12 06:21:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 06:21:04,740 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:04,741 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 06:21:04,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:21:04,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:04,743 INFO L82 PathProgramCache]: Analyzing trace with hash 33663821, now seen corresponding path program 1 times [2020-11-12 06:21:04,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:04,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12945277] [2020-11-12 06:21:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:05,001 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 06:21:05,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12945277] [2020-11-12 06:21:05,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:05,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:21:05,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171175259] [2020-11-12 06:21:05,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:21:05,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:05,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:21:05,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:21:05,008 INFO L87 Difference]: Start difference. First operand 1603 states and 2190 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 06:21:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:05,276 INFO L93 Difference]: Finished difference Result 1144 states and 1500 transitions. [2020-11-12 06:21:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:21:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 06:21:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:05,281 INFO L225 Difference]: With dead ends: 1144 [2020-11-12 06:21:05,281 INFO L226 Difference]: Without dead ends: 642 [2020-11-12 06:21:05,282 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 06:21:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-12 06:21:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-12 06:21:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 615 states have (on average 1.3934959349593496) internal successors, (857), 641 states have internal predecessors, (857), 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 06:21:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-12 06:21:05,301 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 50 [2020-11-12 06:21:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:05,302 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-12 06:21:05,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 06:21:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-12 06:21:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 06:21:05,304 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:05,304 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, 1] [2020-11-12 06:21:05,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:21:05,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash -178527541, now seen corresponding path program 1 times [2020-11-12 06:21:05,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:05,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405560081] [2020-11-12 06:21:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:05,434 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 06:21:05,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405560081] [2020-11-12 06:21:05,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:05,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:21:05,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406983469] [2020-11-12 06:21:05,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:21:05,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:21:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:21:05,437 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:05,525 INFO L93 Difference]: Finished difference Result 1055 states and 1467 transitions. [2020-11-12 06:21:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 06:21:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 06:21:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:05,529 INFO L225 Difference]: With dead ends: 1055 [2020-11-12 06:21:05,529 INFO L226 Difference]: Without dead ends: 572 [2020-11-12 06:21:05,530 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 06:21:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-12 06:21:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2020-11-12 06:21:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 545 states have (on average 1.41651376146789) internal successors, (772), 571 states have internal predecessors, (772), 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 06:21:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 772 transitions. [2020-11-12 06:21:05,547 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 772 transitions. Word has length 54 [2020-11-12 06:21:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:05,547 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 772 transitions. [2020-11-12 06:21:05,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 772 transitions. [2020-11-12 06:21:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 06:21:05,549 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:21:05,550 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, 1] [2020-11-12 06:21:05,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:21:05,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:21:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:21:05,551 INFO L82 PathProgramCache]: Analyzing trace with hash 517458025, now seen corresponding path program 2 times [2020-11-12 06:21:05,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:21:05,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106460775] [2020-11-12 06:21:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:21:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:21:05,697 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 06:21:05,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106460775] [2020-11-12 06:21:05,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:21:05,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:21:05,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148865280] [2020-11-12 06:21:05,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:21:05,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:21:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:21:05,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:21:05,700 INFO L87 Difference]: Start difference. First operand 572 states and 772 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:21:05,821 INFO L93 Difference]: Finished difference Result 464 states and 664 transitions. [2020-11-12 06:21:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:21:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 06:21:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:21:05,822 INFO L225 Difference]: With dead ends: 464 [2020-11-12 06:21:05,822 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:21:05,823 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 06:21:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:21:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:21:05,823 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 06:21:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:21:05,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 06:21:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:21:05,824 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:21:05,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:21:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:21:05,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:21:05,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:21:05,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:21:05 BasicIcfg [2020-11-12 06:21:05,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:21:05,833 INFO L168 Benchmark]: Toolchain (without parser) took 7475.91 ms. Allocated memory was 302.0 MB in the beginning and 585.1 MB in the end (delta: 283.1 MB). Free memory was 277.4 MB in the beginning and 529.7 MB in the end (delta: -252.3 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,834 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:21:05,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.33 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 244.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,843 INFO L168 Benchmark]: Boogie Preprocessor took 77.98 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.8 MB in the end (delta: -40.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,843 INFO L168 Benchmark]: RCFGBuilder took 707.15 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 260.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,844 INFO L168 Benchmark]: TraceAbstraction took 6025.72 ms. Allocated memory was 302.0 MB in the beginning and 585.1 MB in the end (delta: 283.1 MB). Free memory was 260.7 MB in the beginning and 529.7 MB in the end (delta: -269.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:21:05,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 597.33 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 244.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 77.98 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.8 MB in the end (delta: -40.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 707.15 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 260.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6025.72 ms. Allocated memory was 302.0 MB in the beginning and 585.1 MB in the end (delta: 283.1 MB). Free memory was 260.7 MB in the beginning and 529.7 MB in the end (delta: -269.0 MB). Peak memory consumption was 16.2 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 500 SDtfs, 690 SDslu, 1798 SDs, 0 SdLazy, 184 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 41700 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...