/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:13:08,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:13:08,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:13:09,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:13:09,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:13:09,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:13:09,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:13:09,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:13:09,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:13:09,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:13:09,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:13:09,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:13:09,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:13:09,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:13:09,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:13:09,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:13:09,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:13:09,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:13:09,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:13:09,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:13:09,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:13:09,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:13:09,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:13:09,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:13:09,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 06:13:09,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 06:13:09,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 06:13:09,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 06:13:09,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 06:13:09,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 06:13:09,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:13:09,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:13:09,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:13:09,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:13:09,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:13:09,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:13:09,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:13:09,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:13:09,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:13:09,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:13:09,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:13:09,078 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 06:13:09,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:13:09,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:13:09,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:13:09,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:13:09,144 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:13:09,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:13:09,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:13:09,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:13:09,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:13:09,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:13:09,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:13:09,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:13:09,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:13:09,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:13:09,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:13:09,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:13:09,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:13:09,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:13:09,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:13:09,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:13:09,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:13:09,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:13:09,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:13:09,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:13:09,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:13:09,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:13:09,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:13:09,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:13:09,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:13:09,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:13:09,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:13:09,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:13:09,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:13:09,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:13:09,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:13:09,739 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:13:09,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-11-12 06:13:09,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7ec912c/58c7ba5294cd41b3809c4a2b862ac079/FLAG49dbc1d9d [2020-11-12 06:13:10,485 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:13:10,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-11-12 06:13:10,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7ec912c/58c7ba5294cd41b3809c4a2b862ac079/FLAG49dbc1d9d [2020-11-12 06:13:10,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7ec912c/58c7ba5294cd41b3809c4a2b862ac079 [2020-11-12 06:13:10,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:13:10,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:13:10,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:13:10,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:13:10,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:13:10,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:13:10" (1/1) ... [2020-11-12 06:13:10,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797272d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:10, skipping insertion in model container [2020-11-12 06:13:10,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:13:10" (1/1) ... [2020-11-12 06:13:10,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:13:10,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:13:11,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:13:11,409 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:13:11,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:13:11,637 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:13:11,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11 WrapperNode [2020-11-12 06:13:11,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:13:11,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:13:11,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:13:11,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:13:11,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:13:11,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:13:11,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:13:11,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:13:11,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (1/1) ... [2020-11-12 06:13:11,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:13:11,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:13:11,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:13:11,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:13:11,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (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 06:13:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:13:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:13:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:13:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:13:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:13:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:13:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:13:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:13:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:13:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:13:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:13:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:13:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:13:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:13:11,904 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 06:13:12,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:13:12,441 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:13:12,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:13:12 BoogieIcfgContainer [2020-11-12 06:13:12,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:13:12,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:13:12,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:13:12,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:13:12,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:13:10" (1/3) ... [2020-11-12 06:13:12,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2329c1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:13:12, skipping insertion in model container [2020-11-12 06:13:12,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:13:11" (2/3) ... [2020-11-12 06:13:12,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2329c1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:13:12, skipping insertion in model container [2020-11-12 06:13:12,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:13:12" (3/3) ... [2020-11-12 06:13:12,452 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-11-12 06:13:12,469 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:13:12,469 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:13:12,473 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:13:12,474 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:13:12,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,516 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,516 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:13:12,547 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:13:12,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:13:12,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:13:12,601 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:13:12,601 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:13:12,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:13:12,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:13:12,601 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:13:12,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:13:12,602 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:13:12,614 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 06:13:13,491 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 06:13:14,339 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 845ms [2020-11-12 06:13:14,446 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 06:13:14,488 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 9847 states, 9111 states have (on average 1.4982987597409725) internal successors, (13651), 9846 states have internal predecessors, (13651), 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 06:13:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9111 states have (on average 1.4982987597409725) internal successors, (13651), 9846 states have internal predecessors, (13651), 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 06:13:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 06:13:14,533 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:14,534 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] [2020-11-12 06:13:14,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:14,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2020-11-12 06:13:14,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:14,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679526927] [2020-11-12 06:13:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:15,123 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 06:13:15,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679526927] [2020-11-12 06:13:15,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:15,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:15,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686933467] [2020-11-12 06:13:15,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:15,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:15,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:15,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:15,161 INFO L87 Difference]: Start difference. First operand has 9847 states, 9111 states have (on average 1.4982987597409725) internal successors, (13651), 9846 states have internal predecessors, (13651), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 06:13:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:15,550 INFO L93 Difference]: Finished difference Result 12199 states and 15275 transitions. [2020-11-12 06:13:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:13:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2020-11-12 06:13:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:15,593 INFO L225 Difference]: With dead ends: 12199 [2020-11-12 06:13:15,593 INFO L226 Difference]: Without dead ends: 3814 [2020-11-12 06:13:15,595 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:13:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2020-11-12 06:13:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3814. [2020-11-12 06:13:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3814 states, 3569 states have (on average 1.661529840291398) internal successors, (5930), 3813 states have internal predecessors, (5930), 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 06:13:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 5930 transitions. [2020-11-12 06:13:15,835 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 5930 transitions. Word has length 41 [2020-11-12 06:13:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:15,836 INFO L481 AbstractCegarLoop]: Abstraction has 3814 states and 5930 transitions. [2020-11-12 06:13:15,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 06:13:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 5930 transitions. [2020-11-12 06:13:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 06:13:15,844 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:15,844 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] [2020-11-12 06:13:15,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:13:15,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1767731663, now seen corresponding path program 1 times [2020-11-12 06:13:15,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:15,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500537327] [2020-11-12 06:13:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:16,083 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 06:13:16,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500537327] [2020-11-12 06:13:16,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:16,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:16,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596548536] [2020-11-12 06:13:16,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:16,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:16,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:16,090 INFO L87 Difference]: Start difference. First operand 3814 states and 5930 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 06:13:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:16,324 INFO L93 Difference]: Finished difference Result 4554 states and 6942 transitions. [2020-11-12 06:13:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:13:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2020-11-12 06:13:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:16,345 INFO L225 Difference]: With dead ends: 4554 [2020-11-12 06:13:16,346 INFO L226 Difference]: Without dead ends: 3390 [2020-11-12 06:13:16,347 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 06:13:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2020-11-12 06:13:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 3390. [2020-11-12 06:13:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3175 states have (on average 1.6929133858267718) internal successors, (5375), 3389 states have internal predecessors, (5375), 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 06:13:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5375 transitions. [2020-11-12 06:13:16,453 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5375 transitions. Word has length 43 [2020-11-12 06:13:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:16,454 INFO L481 AbstractCegarLoop]: Abstraction has 3390 states and 5375 transitions. [2020-11-12 06:13:16,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 06:13:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5375 transitions. [2020-11-12 06:13:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 06:13:16,465 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:16,466 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] [2020-11-12 06:13:16,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:13:16,466 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1771656880, now seen corresponding path program 1 times [2020-11-12 06:13:16,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:16,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058061427] [2020-11-12 06:13:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:16,705 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 06:13:16,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058061427] [2020-11-12 06:13:16,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:16,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:16,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985000170] [2020-11-12 06:13:16,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:16,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:16,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:16,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:16,714 INFO L87 Difference]: Start difference. First operand 3390 states and 5375 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 06:13:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:16,957 INFO L93 Difference]: Finished difference Result 3906 states and 6100 transitions. [2020-11-12 06:13:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:13:16,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2020-11-12 06:13:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:16,974 INFO L225 Difference]: With dead ends: 3906 [2020-11-12 06:13:16,974 INFO L226 Difference]: Without dead ends: 2831 [2020-11-12 06:13:16,975 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 06:13:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-11-12 06:13:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2020-11-12 06:13:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2659 states have (on average 1.708160962767958) internal successors, (4542), 2830 states have internal predecessors, (4542), 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 06:13:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4542 transitions. [2020-11-12 06:13:17,095 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4542 transitions. Word has length 45 [2020-11-12 06:13:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:17,096 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 4542 transitions. [2020-11-12 06:13:17,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 06:13:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4542 transitions. [2020-11-12 06:13:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:13:17,102 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:17,103 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] [2020-11-12 06:13:17,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:13:17,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -355993648, now seen corresponding path program 1 times [2020-11-12 06:13:17,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:17,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743153741] [2020-11-12 06:13:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:13:17,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743153741] [2020-11-12 06:13:17,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:17,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:13:17,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466974434] [2020-11-12 06:13:17,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:13:17,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:17,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:13:17,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:13:17,320 INFO L87 Difference]: Start difference. First operand 2831 states and 4542 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:13:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:17,644 INFO L93 Difference]: Finished difference Result 4441 states and 7698 transitions. [2020-11-12 06:13:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:13:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 06:13:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:17,662 INFO L225 Difference]: With dead ends: 4441 [2020-11-12 06:13:17,662 INFO L226 Difference]: Without dead ends: 2717 [2020-11-12 06:13:17,663 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 06:13:17,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2020-11-12 06:13:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2717. [2020-11-12 06:13:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2553 states have (on average 1.7160203681942812) internal successors, (4381), 2716 states have internal predecessors, (4381), 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 06:13:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4381 transitions. [2020-11-12 06:13:17,750 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4381 transitions. Word has length 46 [2020-11-12 06:13:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:17,751 INFO L481 AbstractCegarLoop]: Abstraction has 2717 states and 4381 transitions. [2020-11-12 06:13:17,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:13:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4381 transitions. [2020-11-12 06:13:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:13:17,757 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:17,758 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 06:13:17,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:13:17,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash 124517322, now seen corresponding path program 1 times [2020-11-12 06:13:17,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:17,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598230774] [2020-11-12 06:13:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:17,920 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 06:13:17,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598230774] [2020-11-12 06:13:17,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:17,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:13:17,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191835532] [2020-11-12 06:13:17,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:13:17,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:13:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:13:17,923 INFO L87 Difference]: Start difference. First operand 2717 states and 4381 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 06:13:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:18,115 INFO L93 Difference]: Finished difference Result 4402 states and 7674 transitions. [2020-11-12 06:13:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:13:18,116 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 06:13:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:18,130 INFO L225 Difference]: With dead ends: 4402 [2020-11-12 06:13:18,131 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 06:13:18,131 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:13:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 06:13:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2689. [2020-11-12 06:13:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2525 states have (on average 1.721980198019802) internal successors, (4348), 2688 states have internal predecessors, (4348), 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 06:13:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4348 transitions. [2020-11-12 06:13:18,212 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4348 transitions. Word has length 47 [2020-11-12 06:13:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:18,212 INFO L481 AbstractCegarLoop]: Abstraction has 2689 states and 4348 transitions. [2020-11-12 06:13:18,212 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 06:13:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4348 transitions. [2020-11-12 06:13:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:13:18,240 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:18,241 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 06:13:18,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:13:18,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash -893661280, now seen corresponding path program 2 times [2020-11-12 06:13:18,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:18,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472913512] [2020-11-12 06:13:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:18,362 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 06:13:18,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472913512] [2020-11-12 06:13:18,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:18,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:18,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930743797] [2020-11-12 06:13:18,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:18,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:18,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:18,365 INFO L87 Difference]: Start difference. First operand 2689 states and 4348 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 06:13:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:18,585 INFO L93 Difference]: Finished difference Result 4481 states and 7265 transitions. [2020-11-12 06:13:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:13:18,586 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 06:13:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:18,601 INFO L225 Difference]: With dead ends: 4481 [2020-11-12 06:13:18,601 INFO L226 Difference]: Without dead ends: 2848 [2020-11-12 06:13:18,601 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 06:13:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-11-12 06:13:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2208. [2020-11-12 06:13:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 2076 states have (on average 1.729287090558767) internal successors, (3590), 2207 states have internal predecessors, (3590), 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 06:13:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3590 transitions. [2020-11-12 06:13:18,669 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3590 transitions. Word has length 47 [2020-11-12 06:13:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:18,670 INFO L481 AbstractCegarLoop]: Abstraction has 2208 states and 3590 transitions. [2020-11-12 06:13:18,670 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 06:13:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3590 transitions. [2020-11-12 06:13:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:13:18,675 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:18,675 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 06:13:18,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:13:18,676 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1678587078, now seen corresponding path program 1 times [2020-11-12 06:13:18,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:18,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180501711] [2020-11-12 06:13:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:18,835 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 06:13:18,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180501711] [2020-11-12 06:13:18,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:18,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:13:18,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915301244] [2020-11-12 06:13:18,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:13:18,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:18,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:13:18,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:13:18,839 INFO L87 Difference]: Start difference. First operand 2208 states and 3590 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 06:13:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:19,110 INFO L93 Difference]: Finished difference Result 3120 states and 5473 transitions. [2020-11-12 06:13:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:13:19,111 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 06:13:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:19,119 INFO L225 Difference]: With dead ends: 3120 [2020-11-12 06:13:19,119 INFO L226 Difference]: Without dead ends: 1183 [2020-11-12 06:13:19,120 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 06:13:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-11-12 06:13:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2020-11-12 06:13:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1103 states have (on average 1.8667271078875793) internal successors, (2059), 1182 states have internal predecessors, (2059), 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 06:13:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2059 transitions. [2020-11-12 06:13:19,157 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2059 transitions. Word has length 47 [2020-11-12 06:13:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:19,158 INFO L481 AbstractCegarLoop]: Abstraction has 1183 states and 2059 transitions. [2020-11-12 06:13:19,158 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 06:13:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2059 transitions. [2020-11-12 06:13:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 06:13:19,162 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:19,162 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 06:13:19,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:13:19,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash -322406271, now seen corresponding path program 1 times [2020-11-12 06:13:19,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:19,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008179648] [2020-11-12 06:13:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:19,345 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 06:13:19,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008179648] [2020-11-12 06:13:19,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:19,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:19,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512728496] [2020-11-12 06:13:19,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:19,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:19,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:19,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:19,347 INFO L87 Difference]: Start difference. First operand 1183 states and 2059 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 06:13:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:19,558 INFO L93 Difference]: Finished difference Result 1477 states and 2921 transitions. [2020-11-12 06:13:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:13:19,559 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 06:13:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:19,566 INFO L225 Difference]: With dead ends: 1477 [2020-11-12 06:13:19,566 INFO L226 Difference]: Without dead ends: 1157 [2020-11-12 06:13:19,567 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 06:13:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-11-12 06:13:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2020-11-12 06:13:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1079 states have (on average 1.8600556070435588) internal successors, (2007), 1156 states have internal predecessors, (2007), 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 06:13:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2007 transitions. [2020-11-12 06:13:19,604 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2007 transitions. Word has length 49 [2020-11-12 06:13:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:19,604 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 2007 transitions. [2020-11-12 06:13:19,604 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 06:13:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2007 transitions. [2020-11-12 06:13:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 06:13:19,608 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:19,608 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 06:13:19,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 06:13:19,609 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:19,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1115543646, now seen corresponding path program 1 times [2020-11-12 06:13:19,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:19,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900132288] [2020-11-12 06:13:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:19,803 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 06:13:19,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900132288] [2020-11-12 06:13:19,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:19,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:13:19,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726096191] [2020-11-12 06:13:19,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:13:19,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:19,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:13:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:13:19,806 INFO L87 Difference]: Start difference. First operand 1157 states and 2007 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 06:13:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:20,196 INFO L93 Difference]: Finished difference Result 1274 states and 2537 transitions. [2020-11-12 06:13:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:13:20,198 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 06:13:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:20,204 INFO L225 Difference]: With dead ends: 1274 [2020-11-12 06:13:20,204 INFO L226 Difference]: Without dead ends: 956 [2020-11-12 06:13:20,204 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 06:13:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-11-12 06:13:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2020-11-12 06:13:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 893 states have (on average 1.8253079507278835) internal successors, (1630), 955 states have internal predecessors, (1630), 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 06:13:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1630 transitions. [2020-11-12 06:13:20,242 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1630 transitions. Word has length 50 [2020-11-12 06:13:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:20,244 INFO L481 AbstractCegarLoop]: Abstraction has 956 states and 1630 transitions. [2020-11-12 06:13:20,244 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 06:13:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1630 transitions. [2020-11-12 06:13:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 06:13:20,267 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:20,267 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 06:13:20,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 06:13:20,268 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2008025445, now seen corresponding path program 1 times [2020-11-12 06:13:20,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:20,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639905096] [2020-11-12 06:13:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:20,428 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 06:13:20,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639905096] [2020-11-12 06:13:20,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:20,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:13:20,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037245169] [2020-11-12 06:13:20,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:13:20,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:20,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:13:20,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:13:20,431 INFO L87 Difference]: Start difference. First operand 956 states and 1630 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 06:13:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:20,739 INFO L93 Difference]: Finished difference Result 740 states and 1519 transitions. [2020-11-12 06:13:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:13:20,740 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 06:13:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:20,743 INFO L225 Difference]: With dead ends: 740 [2020-11-12 06:13:20,743 INFO L226 Difference]: Without dead ends: 461 [2020-11-12 06:13:20,744 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 06:13:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-11-12 06:13:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2020-11-12 06:13:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 434 states have (on average 1.7304147465437787) internal successors, (751), 460 states have internal predecessors, (751), 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 06:13:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 751 transitions. [2020-11-12 06:13:20,755 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 751 transitions. Word has length 51 [2020-11-12 06:13:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:20,755 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 751 transitions. [2020-11-12 06:13:20,755 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 06:13:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 751 transitions. [2020-11-12 06:13:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 06:13:20,757 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:13:20,757 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 06:13:20,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 06:13:20,758 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:13:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:13:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1737171526, now seen corresponding path program 1 times [2020-11-12 06:13:20,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:13:20,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124282449] [2020-11-12 06:13:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:13:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:13:20,865 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 06:13:20,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124282449] [2020-11-12 06:13:20,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:13:20,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:13:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761091440] [2020-11-12 06:13:20,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:13:20,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:13:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:13:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:13:20,868 INFO L87 Difference]: Start difference. First operand 461 states and 751 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 06:13:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:13:20,962 INFO L93 Difference]: Finished difference Result 353 states and 643 transitions. [2020-11-12 06:13:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 06:13:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 06:13:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:13:20,963 INFO L225 Difference]: With dead ends: 353 [2020-11-12 06:13:20,963 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:13:20,964 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 06:13:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:13:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:13:20,964 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 06:13:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:13:20,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 06:13:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:13:20,965 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:13:20,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 06:13:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:13:20,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:13:20,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 06:13:20,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:13:20 BasicIcfg [2020-11-12 06:13:20,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:13:20,974 INFO L168 Benchmark]: Toolchain (without parser) took 10161.77 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 277.1 MB in the beginning and 508.0 MB in the end (delta: -230.9 MB). Peak memory consumption was 110.3 MB. Max. memory is 16.0 GB. [2020-11-12 06:13:20,975 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:13:20,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.83 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 244.8 MB in the end (delta: 31.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2020-11-12 06:13:20,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.28 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 242.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:13:20,977 INFO L168 Benchmark]: Boogie Preprocessor took 72.92 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 283.7 MB in the end (delta: -40.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. [2020-11-12 06:13:20,978 INFO L168 Benchmark]: RCFGBuilder took 636.03 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 260.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:13:20,979 INFO L168 Benchmark]: TraceAbstraction took 8525.93 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 260.6 MB in the beginning and 508.0 MB in the end (delta: -247.4 MB). Peak memory consumption was 91.3 MB. Max. memory is 16.0 GB. [2020-11-12 06:13:20,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 816.83 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 244.8 MB in the end (delta: 31.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 93.28 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 242.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 72.92 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 283.7 MB in the end (delta: -40.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 636.03 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 260.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8525.93 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 260.6 MB in the beginning and 508.0 MB in the end (delta: -247.4 MB). Peak memory consumption was 91.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 780 SDtfs, 926 SDslu, 2831 SDs, 0 SdLazy, 356 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred 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: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 640 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 519 NumberOfCodeBlocks, 519 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 62992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...