/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:09:11,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:09:11,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:09:11,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:09:11,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:09:11,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:09:11,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:09:11,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:09:11,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:09:11,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:09:11,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:09:11,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:09:11,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:09:11,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:09:11,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:09:11,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:09:11,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:09:11,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:09:11,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:09:11,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:09:11,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:09:11,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:09:11,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:09:11,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:09:11,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:09:11,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:09:11,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:09:11,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:09:11,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:09:11,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:09:11,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:09:11,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:09:11,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:09:11,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:09:11,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:09:11,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:09:11,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:09:11,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:09:11,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:09:11,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:09:11,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:09:11,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:09:11,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:09:11,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:09:11,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:09:11,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:09:11,250 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:09:11,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:09:11,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:09:11,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:09:11,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:09:11,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:09:11,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:09:11,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:09:11,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:09:11,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:09:11,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:09:11,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:09:11,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:09:11,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:09:11,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:09:11,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:09:11,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:09:11,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:09:11,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:09:11,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:09:11,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:09:11,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:09:11,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:09:11,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:09:11,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:09:11,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:09:11,743 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:09:11,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2020-12-22 11:09:11,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa066e832/f476f7df512f44c19e6935461d9edb12/FLAG70b669181 [2020-12-22 11:09:12,496 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:09:12,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2020-12-22 11:09:12,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa066e832/f476f7df512f44c19e6935461d9edb12/FLAG70b669181 [2020-12-22 11:09:12,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa066e832/f476f7df512f44c19e6935461d9edb12 [2020-12-22 11:09:12,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:09:12,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:09:12,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:09:12,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:09:12,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:09:12,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:09:12" (1/1) ... [2020-12-22 11:09:12,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15532294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:12, skipping insertion in model container [2020-12-22 11:09:12,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:09:12" (1/1) ... [2020-12-22 11:09:12,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:09:12,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:09:13,038 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i[950,963] [2020-12-22 11:09:13,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:09:13,292 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:09:13,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i[950,963] [2020-12-22 11:09:13,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:09:13,484 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:09:13,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13 WrapperNode [2020-12-22 11:09:13,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:09:13,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:09:13,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:09:13,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:09:13,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:09:13,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:09:13,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:09:13,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:09:13,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (1/1) ... [2020-12-22 11:09:13,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:09:13,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:09:13,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:09:13,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:09:13,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (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 [2020-12-22 11:09:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:09:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:09:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:09:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:09:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:09:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-22 11:09:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-22 11:09:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:09:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:09:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:09:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:09:13,794 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:09:14,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:09:14,284 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:09:14,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:09:14 BoogieIcfgContainer [2020-12-22 11:09:14,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:09:14,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:09:14,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:09:14,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:09:14,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:09:12" (1/3) ... [2020-12-22 11:09:14,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ca9546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:09:14, skipping insertion in model container [2020-12-22 11:09:14,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:09:13" (2/3) ... [2020-12-22 11:09:14,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ca9546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:09:14, skipping insertion in model container [2020-12-22 11:09:14,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:09:14" (3/3) ... [2020-12-22 11:09:14,296 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-12-22 11:09:14,303 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:09:14,303 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:09:14,308 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:09:14,310 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:09:14,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,346 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,346 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,346 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,352 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,352 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,354 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,354 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,355 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,355 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,356 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,356 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,358 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,370 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,372 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,372 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,373 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:09:14,387 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:09:14,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 11:09:14,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:09:14,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:09:14,436 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:09:14,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:09:14,436 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:09:14,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:09:14,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:09:14,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:09:14,451 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:09:14,454 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-22 11:09:14,457 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-22 11:09:14,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2020-12-22 11:09:14,530 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2020-12-22 11:09:14,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:09:14,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-22 11:09:14,546 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-22 11:09:17,347 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 11:09:17,886 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:09:18,208 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:09:18,368 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2020-12-22 11:09:18,369 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-22 11:09:18,376 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-12-22 11:09:18,437 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-12-22 11:09:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-12-22 11:09:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:09:18,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:18,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:18,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2020-12-22 11:09:18,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:18,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488182964] [2020-12-22 11:09:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:18,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488182964] [2020-12-22 11:09:18,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:18,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:09:18,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101654718] [2020-12-22 11:09:18,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:09:18,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:09:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:09:18,701 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-12-22 11:09:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:18,757 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-12-22 11:09:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:09:18,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 11:09:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:18,788 INFO L225 Difference]: With dead ends: 850 [2020-12-22 11:09:18,789 INFO L226 Difference]: Without dead ends: 706 [2020-12-22 11:09:18,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:09:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-12-22 11:09:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-12-22 11:09:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-12-22 11:09:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-12-22 11:09:18,919 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-12-22 11:09:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:18,920 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-12-22 11:09:18,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:09:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-12-22 11:09:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:09:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:18,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:18,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:09:18,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:18,925 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2020-12-22 11:09:18,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:18,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524701144] [2020-12-22 11:09:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:19,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524701144] [2020-12-22 11:09:19,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:19,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:09:19,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421809399] [2020-12-22 11:09:19,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:09:19,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:19,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:09:19,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:09:19,181 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-12-22 11:09:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:19,299 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2020-12-22 11:09:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:09:19,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:09:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:19,316 INFO L225 Difference]: With dead ends: 1412 [2020-12-22 11:09:19,317 INFO L226 Difference]: Without dead ends: 1104 [2020-12-22 11:09:19,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-12-22 11:09:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2020-12-22 11:09:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-12-22 11:09:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2020-12-22 11:09:19,384 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2020-12-22 11:09:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:19,385 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2020-12-22 11:09:19,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:09:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2020-12-22 11:09:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:09:19,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:19,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:19,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:09:19,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2020-12-22 11:09:19,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:19,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353669011] [2020-12-22 11:09:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:19,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353669011] [2020-12-22 11:09:19,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:19,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:09:19,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842894327] [2020-12-22 11:09:19,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:19,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:19,522 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2020-12-22 11:09:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:19,654 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2020-12-22 11:09:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:19,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:09:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:19,664 INFO L225 Difference]: With dead ends: 1245 [2020-12-22 11:09:19,664 INFO L226 Difference]: Without dead ends: 1014 [2020-12-22 11:09:19,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-12-22 11:09:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 806. [2020-12-22 11:09:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-12-22 11:09:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2638 transitions. [2020-12-22 11:09:19,706 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2638 transitions. Word has length 12 [2020-12-22 11:09:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:19,707 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 2638 transitions. [2020-12-22 11:09:19,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2638 transitions. [2020-12-22 11:09:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:09:19,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:19,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:19,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:09:19,710 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:19,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1094137873, now seen corresponding path program 1 times [2020-12-22 11:09:19,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:19,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626716765] [2020-12-22 11:09:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:19,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626716765] [2020-12-22 11:09:19,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:19,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:09:19,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517897093] [2020-12-22 11:09:19,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:19,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:19,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:19,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:19,794 INFO L87 Difference]: Start difference. First operand 806 states and 2638 transitions. Second operand 5 states. [2020-12-22 11:09:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:19,882 INFO L93 Difference]: Finished difference Result 1094 states and 3416 transitions. [2020-12-22 11:09:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:19,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:09:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:19,892 INFO L225 Difference]: With dead ends: 1094 [2020-12-22 11:09:19,892 INFO L226 Difference]: Without dead ends: 934 [2020-12-22 11:09:19,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-12-22 11:09:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 710. [2020-12-22 11:09:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-12-22 11:09:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2290 transitions. [2020-12-22 11:09:19,929 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2290 transitions. Word has length 12 [2020-12-22 11:09:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:19,930 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 2290 transitions. [2020-12-22 11:09:19,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2290 transitions. [2020-12-22 11:09:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:09:19,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:19,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:19,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:09:19,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:19,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1912675369, now seen corresponding path program 1 times [2020-12-22 11:09:19,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:19,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704960230] [2020-12-22 11:09:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704960230] [2020-12-22 11:09:20,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:20,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:09:20,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892838282] [2020-12-22 11:09:20,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:20,020 INFO L87 Difference]: Start difference. First operand 710 states and 2290 transitions. Second operand 5 states. [2020-12-22 11:09:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:20,112 INFO L93 Difference]: Finished difference Result 1024 states and 3137 transitions. [2020-12-22 11:09:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:20,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:09:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:20,121 INFO L225 Difference]: With dead ends: 1024 [2020-12-22 11:09:20,122 INFO L226 Difference]: Without dead ends: 874 [2020-12-22 11:09:20,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-12-22 11:09:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 666. [2020-12-22 11:09:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-12-22 11:09:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2118 transitions. [2020-12-22 11:09:20,154 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2118 transitions. Word has length 13 [2020-12-22 11:09:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:20,154 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 2118 transitions. [2020-12-22 11:09:20,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2118 transitions. [2020-12-22 11:09:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:09:20,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:20,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:20,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:09:20,157 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1163214657, now seen corresponding path program 1 times [2020-12-22 11:09:20,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:20,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830771492] [2020-12-22 11:09:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:20,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830771492] [2020-12-22 11:09:20,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:20,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:20,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967967150] [2020-12-22 11:09:20,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:20,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:20,279 INFO L87 Difference]: Start difference. First operand 666 states and 2118 transitions. Second operand 5 states. [2020-12-22 11:09:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:20,358 INFO L93 Difference]: Finished difference Result 1050 states and 3172 transitions. [2020-12-22 11:09:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:20,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:09:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:20,366 INFO L225 Difference]: With dead ends: 1050 [2020-12-22 11:09:20,366 INFO L226 Difference]: Without dead ends: 802 [2020-12-22 11:09:20,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-12-22 11:09:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 586. [2020-12-22 11:09:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-12-22 11:09:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1786 transitions. [2020-12-22 11:09:20,393 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1786 transitions. Word has length 14 [2020-12-22 11:09:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:20,393 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1786 transitions. [2020-12-22 11:09:20,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1786 transitions. [2020-12-22 11:09:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:09:20,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:20,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:20,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:09:20,396 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2014475768, now seen corresponding path program 1 times [2020-12-22 11:09:20,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:20,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682517604] [2020-12-22 11:09:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:20,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682517604] [2020-12-22 11:09:20,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:20,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:20,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622108418] [2020-12-22 11:09:20,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:09:20,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:20,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:09:20,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:09:20,492 INFO L87 Difference]: Start difference. First operand 586 states and 1786 transitions. Second operand 6 states. [2020-12-22 11:09:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:20,579 INFO L93 Difference]: Finished difference Result 990 states and 2964 transitions. [2020-12-22 11:09:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:09:20,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 11:09:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:20,585 INFO L225 Difference]: With dead ends: 990 [2020-12-22 11:09:20,585 INFO L226 Difference]: Without dead ends: 570 [2020-12-22 11:09:20,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:09:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-22 11:09:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 442. [2020-12-22 11:09:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-22 11:09:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2020-12-22 11:09:20,605 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 14 [2020-12-22 11:09:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:20,606 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2020-12-22 11:09:20,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:09:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2020-12-22 11:09:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:09:20,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:20,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:20,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:09:20,608 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1683713572, now seen corresponding path program 2 times [2020-12-22 11:09:20,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:20,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793983874] [2020-12-22 11:09:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:20,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793983874] [2020-12-22 11:09:20,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:20,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:09:20,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560814460] [2020-12-22 11:09:20,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:20,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:20,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:20,696 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand 5 states. [2020-12-22 11:09:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:20,758 INFO L93 Difference]: Finished difference Result 626 states and 1856 transitions. [2020-12-22 11:09:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:20,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:09:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:20,764 INFO L225 Difference]: With dead ends: 626 [2020-12-22 11:09:20,764 INFO L226 Difference]: Without dead ends: 570 [2020-12-22 11:09:20,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-22 11:09:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 418. [2020-12-22 11:09:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-22 11:09:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1252 transitions. [2020-12-22 11:09:20,784 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1252 transitions. Word has length 14 [2020-12-22 11:09:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:20,785 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1252 transitions. [2020-12-22 11:09:20,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1252 transitions. [2020-12-22 11:09:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:09:20,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:20,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:20,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:09:20,787 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2020-12-22 11:09:20,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:20,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772936982] [2020-12-22 11:09:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:20,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772936982] [2020-12-22 11:09:20,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:20,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:20,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325699267] [2020-12-22 11:09:20,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:20,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:20,884 INFO L87 Difference]: Start difference. First operand 418 states and 1252 transitions. Second operand 5 states. [2020-12-22 11:09:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:20,955 INFO L93 Difference]: Finished difference Result 686 states and 1964 transitions. [2020-12-22 11:09:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:09:20,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:09:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:20,960 INFO L225 Difference]: With dead ends: 686 [2020-12-22 11:09:20,960 INFO L226 Difference]: Without dead ends: 514 [2020-12-22 11:09:20,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-12-22 11:09:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 394. [2020-12-22 11:09:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 11:09:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-12-22 11:09:20,980 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-12-22 11:09:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:20,981 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-12-22 11:09:20,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-12-22 11:09:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:09:20,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:20,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:20,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:09:20,983 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2020-12-22 11:09:20,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:20,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243254846] [2020-12-22 11:09:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243254846] [2020-12-22 11:09:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:09:21,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43055701] [2020-12-22 11:09:21,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:09:21,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:09:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:09:21,026 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 3 states. [2020-12-22 11:09:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,039 INFO L93 Difference]: Finished difference Result 358 states and 974 transitions. [2020-12-22 11:09:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:09:21,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 11:09:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,043 INFO L225 Difference]: With dead ends: 358 [2020-12-22 11:09:21,043 INFO L226 Difference]: Without dead ends: 358 [2020-12-22 11:09:21,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:09:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-22 11:09:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-22 11:09:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-22 11:09:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 974 transitions. [2020-12-22 11:09:21,056 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 974 transitions. Word has length 15 [2020-12-22 11:09:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,057 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 974 transitions. [2020-12-22 11:09:21,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:09:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 974 transitions. [2020-12-22 11:09:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:09:21,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:21,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:21,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:09:21,059 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:21,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:21,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2020-12-22 11:09:21,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:21,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243903213] [2020-12-22 11:09:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243903213] [2020-12-22 11:09:21,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:09:21,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942922798] [2020-12-22 11:09:21,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:09:21,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:09:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:09:21,101 INFO L87 Difference]: Start difference. First operand 358 states and 974 transitions. Second operand 4 states. [2020-12-22 11:09:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,124 INFO L93 Difference]: Finished difference Result 282 states and 692 transitions. [2020-12-22 11:09:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:09:21,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 11:09:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,127 INFO L225 Difference]: With dead ends: 282 [2020-12-22 11:09:21,127 INFO L226 Difference]: Without dead ends: 282 [2020-12-22 11:09:21,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:09:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-22 11:09:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-22 11:09:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-22 11:09:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 692 transitions. [2020-12-22 11:09:21,137 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 692 transitions. Word has length 16 [2020-12-22 11:09:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,138 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 692 transitions. [2020-12-22 11:09:21,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:09:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 692 transitions. [2020-12-22 11:09:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 11:09:21,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:21,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:21,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:09:21,139 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:21,140 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2020-12-22 11:09:21,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:21,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534429028] [2020-12-22 11:09:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534429028] [2020-12-22 11:09:21,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:21,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745819653] [2020-12-22 11:09:21,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:21,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:21,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:21,188 INFO L87 Difference]: Start difference. First operand 282 states and 692 transitions. Second operand 5 states. [2020-12-22 11:09:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,224 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2020-12-22 11:09:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:09:21,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 11:09:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,227 INFO L225 Difference]: With dead ends: 221 [2020-12-22 11:09:21,227 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 11:09:21,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 11:09:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-12-22 11:09:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-22 11:09:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 477 transitions. [2020-12-22 11:09:21,235 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 477 transitions. Word has length 17 [2020-12-22 11:09:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,235 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 477 transitions. [2020-12-22 11:09:21,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 477 transitions. [2020-12-22 11:09:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 11:09:21,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:21,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:21,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:09:21,237 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:21,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2020-12-22 11:09:21,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:21,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493833178] [2020-12-22 11:09:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493833178] [2020-12-22 11:09:21,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:21,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464023026] [2020-12-22 11:09:21,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:09:21,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:09:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:09:21,287 INFO L87 Difference]: Start difference. First operand 205 states and 477 transitions. Second operand 5 states. [2020-12-22 11:09:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,323 INFO L93 Difference]: Finished difference Result 258 states and 580 transitions. [2020-12-22 11:09:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:09:21,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 11:09:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,324 INFO L225 Difference]: With dead ends: 258 [2020-12-22 11:09:21,325 INFO L226 Difference]: Without dead ends: 154 [2020-12-22 11:09:21,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:09:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-22 11:09:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2020-12-22 11:09:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 11:09:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2020-12-22 11:09:21,330 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 19 [2020-12-22 11:09:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,330 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2020-12-22 11:09:21,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:09:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2020-12-22 11:09:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 11:09:21,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:21,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:21,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:09:21,332 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:21,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2020-12-22 11:09:21,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:21,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616267277] [2020-12-22 11:09:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616267277] [2020-12-22 11:09:21,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:09:21,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660267002] [2020-12-22 11:09:21,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:09:21,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:09:21,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:09:21,384 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand 6 states. [2020-12-22 11:09:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,423 INFO L93 Difference]: Finished difference Result 129 states and 276 transitions. [2020-12-22 11:09:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:09:21,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 11:09:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,425 INFO L225 Difference]: With dead ends: 129 [2020-12-22 11:09:21,425 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 11:09:21,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:09:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 11:09:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 11:09:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 11:09:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2020-12-22 11:09:21,427 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2020-12-22 11:09:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,428 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2020-12-22 11:09:21,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:09:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2020-12-22 11:09:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 11:09:21,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:09:21,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:09:21,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 11:09:21,429 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:09:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:09:21,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2020-12-22 11:09:21,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:09:21,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385586748] [2020-12-22 11:09:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:09:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:09:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:09:21,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385586748] [2020-12-22 11:09:21,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:09:21,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:09:21,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870854468] [2020-12-22 11:09:21,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:09:21,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:09:21,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:09:21,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:09:21,529 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2020-12-22 11:09:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:09:21,556 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2020-12-22 11:09:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:09:21,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-22 11:09:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:09:21,557 INFO L225 Difference]: With dead ends: 52 [2020-12-22 11:09:21,557 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:09:21,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:09:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:09:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:09:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:09:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:09:21,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-22 11:09:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:09:21,562 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:09:21,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:09:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:09:21,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:09:21,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 11:09:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:09:21 BasicIcfg [2020-12-22 11:09:21,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:09:21,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:09:21,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:09:21,569 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:09:21,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:09:14" (3/4) ... [2020-12-22 11:09:21,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:09:21,582 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:09:21,582 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:09:21,582 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:09:21,582 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-22 11:09:21,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-22 11:09:21,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:09:21,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:09:21,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:09:21,630 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe016_tso.oepc.i-witness.graphml [2020-12-22 11:09:21,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:09:21,632 INFO L168 Benchmark]: Toolchain (without parser) took 8841.48 ms. Allocated memory was 170.9 MB in the beginning and 249.6 MB in the end (delta: 78.6 MB). Free memory was 143.9 MB in the beginning and 211.0 MB in the end (delta: -67.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,633 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:09:21,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.03 ms. Allocated memory is still 170.9 MB. Free memory was 143.5 MB in the beginning and 112.2 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.73 ms. Allocated memory is still 170.9 MB. Free memory was 112.2 MB in the beginning and 110.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,635 INFO L168 Benchmark]: Boogie Preprocessor took 67.27 ms. Allocated memory is still 170.9 MB. Free memory was 110.2 MB in the beginning and 108.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,636 INFO L168 Benchmark]: RCFGBuilder took 633.57 ms. Allocated memory is still 170.9 MB. Free memory was 108.7 MB in the beginning and 148.0 MB in the end (delta: -39.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,637 INFO L168 Benchmark]: TraceAbstraction took 7279.51 ms. Allocated memory was 170.9 MB in the beginning and 249.6 MB in the end (delta: 78.6 MB). Free memory was 147.5 MB in the beginning and 213.6 MB in the end (delta: -66.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,637 INFO L168 Benchmark]: Witness Printer took 61.59 ms. Allocated memory is still 249.6 MB. Free memory was 213.6 MB in the beginning and 211.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:09:21,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 694.03 ms. Allocated memory is still 170.9 MB. Free memory was 143.5 MB in the beginning and 112.2 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 95.73 ms. Allocated memory is still 170.9 MB. Free memory was 112.2 MB in the beginning and 110.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.27 ms. Allocated memory is still 170.9 MB. Free memory was 110.2 MB in the beginning and 108.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 633.57 ms. Allocated memory is still 170.9 MB. Free memory was 108.7 MB in the beginning and 148.0 MB in the end (delta: -39.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7279.51 ms. Allocated memory was 170.9 MB in the beginning and 249.6 MB in the end (delta: 78.6 MB). Free memory was 147.5 MB in the beginning and 213.6 MB in the end (delta: -66.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Witness Printer took 61.59 ms. Allocated memory is still 249.6 MB. Free memory was 213.6 MB in the beginning and 211.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 411 SDtfs, 461 SDslu, 715 SDs, 0 SdLazy, 276 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1460 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 13381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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...