/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/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:40:05,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:40:05,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:40:05,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:40:05,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:40:05,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:40:05,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:40:05,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:40:05,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:40:05,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:40:05,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:40:05,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:40:05,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:40:05,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:40:05,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:40:05,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:40:05,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:40:05,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:40:05,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:40:05,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:40:05,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:40:05,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:40:05,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:40:05,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:40:05,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:40:05,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:40:05,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:40:05,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:40:05,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:40:05,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:40:05,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:40:05,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:40:05,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:40:05,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:40:05,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:40:05,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:40:05,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:40:05,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:40:05,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:40:05,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:40:05,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:40:05,240 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:40:05,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:40:05,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:40:05,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:40:05,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:40:05,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:40:05,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:40:05,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:40:05,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:40:05,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:40:05,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:40:05,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:40:05,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:40:05,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:40:05,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:40:05,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:40:05,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:40:05,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:40:05,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:40:05,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:40:05,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:40:05,244 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:40:05,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:40:05,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:40:05,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:40:05,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:40:05,661 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:40:05,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2021-01-06 23:40:05,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/606862527/f06d516a3410483bb1b97e3b6460e98e/FLAGec2100ff9 [2021-01-06 23:40:06,477 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:40:06,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2021-01-06 23:40:06,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/606862527/f06d516a3410483bb1b97e3b6460e98e/FLAGec2100ff9 [2021-01-06 23:40:06,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/606862527/f06d516a3410483bb1b97e3b6460e98e [2021-01-06 23:40:06,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:40:06,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:40:06,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:40:06,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:40:06,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:40:06,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:40:06" (1/1) ... [2021-01-06 23:40:06,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fa4269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:06, skipping insertion in model container [2021-01-06 23:40:06,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:40:06" (1/1) ... [2021-01-06 23:40:06,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:40:06,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:40:07,026 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p3_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:40:07,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:40:07,294 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:40:07,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p3_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:40:07,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:40:07,439 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:40:07,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07 WrapperNode [2021-01-06 23:40:07,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:40:07,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:40:07,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:40:07,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:40:07,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:40:07,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:40:07,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:40:07,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:40:07,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... [2021-01-06 23:40:07,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:40:07,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:40:07,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:40:07,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:40:07,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 23:40:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:40:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:40:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:40:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:40:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:40:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:40:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:40:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:40:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:40:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:40:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:40:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:40:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:40:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:40:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:40:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:40:07,661 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:40:08,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:40:08,173 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:40:08,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:08 BoogieIcfgContainer [2021-01-06 23:40:08,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:40:08,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:40:08,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:40:08,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:40:08,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:40:06" (1/3) ... [2021-01-06 23:40:08,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7ef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:40:08, skipping insertion in model container [2021-01-06 23:40:08,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:07" (2/3) ... [2021-01-06 23:40:08,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7ef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:40:08, skipping insertion in model container [2021-01-06 23:40:08,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:08" (3/3) ... [2021-01-06 23:40:08,186 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2021-01-06 23:40:08,193 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:40:08,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:40:08,236 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:40:08,237 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:40:08,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,315 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,315 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,332 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,332 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,332 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,332 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,333 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,333 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,333 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,351 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,351 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,351 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,351 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,353 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:08,356 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:40:08,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:40:08,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:40:08,400 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:40:08,401 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:40:08,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:40:08,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:40:08,401 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:40:08,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:40:08,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:40:08,416 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:40:08,418 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2021-01-06 23:40:08,422 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2021-01-06 23:40:08,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-01-06 23:40:08,479 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-01-06 23:40:08,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:40:08,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-01-06 23:40:08,489 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2021-01-06 23:40:12,059 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-06 23:40:12,167 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-01-06 23:40:12,466 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-06 23:40:12,580 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-01-06 23:40:12,588 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2021-01-06 23:40:12,589 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-01-06 23:40:12,596 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2021-01-06 23:40:12,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2021-01-06 23:40:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2021-01-06 23:40:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:40:12,747 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:12,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:12,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2021-01-06 23:40:12,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:12,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009080941] [2021-01-06 23:40:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:12,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009080941] [2021-01-06 23:40:13,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:13,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:40:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427566320] [2021-01-06 23:40:13,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:40:13,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:40:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:40:13,037 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2021-01-06 23:40:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:13,119 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2021-01-06 23:40:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:40:13,121 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 23:40:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:13,169 INFO L225 Difference]: With dead ends: 1450 [2021-01-06 23:40:13,169 INFO L226 Difference]: Without dead ends: 1194 [2021-01-06 23:40:13,170 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 [2021-01-06 23:40:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-01-06 23:40:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2021-01-06 23:40:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2021-01-06 23:40:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2021-01-06 23:40:13,357 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2021-01-06 23:40:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:13,358 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2021-01-06 23:40:13,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:40:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2021-01-06 23:40:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:40:13,368 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:13,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:13,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:40:13,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2021-01-06 23:40:13,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:13,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113350667] [2021-01-06 23:40:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:13,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113350667] [2021-01-06 23:40:13,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:13,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:40:13,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823857133] [2021-01-06 23:40:13,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:40:13,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:40:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:40:13,577 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2021-01-06 23:40:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:13,634 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2021-01-06 23:40:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:40:13,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:40:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:13,646 INFO L225 Difference]: With dead ends: 1448 [2021-01-06 23:40:13,647 INFO L226 Difference]: Without dead ends: 1192 [2021-01-06 23:40:13,648 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 [2021-01-06 23:40:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-01-06 23:40:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2021-01-06 23:40:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2021-01-06 23:40:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2021-01-06 23:40:13,749 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2021-01-06 23:40:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:13,750 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2021-01-06 23:40:13,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:40:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2021-01-06 23:40:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:40:13,752 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:13,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:13,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:40:13,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:13,755 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2021-01-06 23:40:13,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:13,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216029576] [2021-01-06 23:40:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:13,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216029576] [2021-01-06 23:40:13,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:13,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:40:13,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885113794] [2021-01-06 23:40:13,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:13,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:13,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:13,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:13,897 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2021-01-06 23:40:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:13,944 INFO L93 Difference]: Finished difference Result 1318 states and 4624 transitions. [2021-01-06 23:40:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:40:13,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:40:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:13,955 INFO L225 Difference]: With dead ends: 1318 [2021-01-06 23:40:13,955 INFO L226 Difference]: Without dead ends: 1066 [2021-01-06 23:40:13,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-01-06 23:40:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-01-06 23:40:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2021-01-06 23:40:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2021-01-06 23:40:14,003 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 12 [2021-01-06 23:40:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:14,004 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2021-01-06 23:40:14,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2021-01-06 23:40:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:40:14,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:14,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:14,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:40:14,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:14,007 INFO L82 PathProgramCache]: Analyzing trace with hash -861902487, now seen corresponding path program 1 times [2021-01-06 23:40:14,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:14,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151934641] [2021-01-06 23:40:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:14,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151934641] [2021-01-06 23:40:14,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:14,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:40:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77682162] [2021-01-06 23:40:14,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:14,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:14,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:14,090 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2021-01-06 23:40:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:14,192 INFO L93 Difference]: Finished difference Result 1819 states and 6368 transitions. [2021-01-06 23:40:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 23:40:14,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:40:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:14,204 INFO L225 Difference]: With dead ends: 1819 [2021-01-06 23:40:14,204 INFO L226 Difference]: Without dead ends: 1276 [2021-01-06 23:40:14,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-01-06 23:40:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1276. [2021-01-06 23:40:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2021-01-06 23:40:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4536 transitions. [2021-01-06 23:40:14,259 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4536 transitions. Word has length 12 [2021-01-06 23:40:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 4536 transitions. [2021-01-06 23:40:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4536 transitions. [2021-01-06 23:40:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:40:14,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:14,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:14,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:40:14,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash -950335427, now seen corresponding path program 1 times [2021-01-06 23:40:14,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:14,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676900202] [2021-01-06 23:40:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:14,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676900202] [2021-01-06 23:40:14,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:14,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:40:14,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508499334] [2021-01-06 23:40:14,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:14,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:14,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:14,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:14,327 INFO L87 Difference]: Start difference. First operand 1276 states and 4536 transitions. Second operand 5 states. [2021-01-06 23:40:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:14,370 INFO L93 Difference]: Finished difference Result 1366 states and 4728 transitions. [2021-01-06 23:40:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:40:14,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:40:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:14,381 INFO L225 Difference]: With dead ends: 1366 [2021-01-06 23:40:14,382 INFO L226 Difference]: Without dead ends: 1186 [2021-01-06 23:40:14,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-01-06 23:40:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1096. [2021-01-06 23:40:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2021-01-06 23:40:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 3837 transitions. [2021-01-06 23:40:14,471 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 3837 transitions. Word has length 13 [2021-01-06 23:40:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:14,472 INFO L481 AbstractCegarLoop]: Abstraction has 1096 states and 3837 transitions. [2021-01-06 23:40:14,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 3837 transitions. [2021-01-06 23:40:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:40:14,474 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:14,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:14,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:40:14,474 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:14,475 INFO L82 PathProgramCache]: Analyzing trace with hash -951050411, now seen corresponding path program 1 times [2021-01-06 23:40:14,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:14,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960569928] [2021-01-06 23:40:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:14,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960569928] [2021-01-06 23:40:14,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:14,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:40:14,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470133671] [2021-01-06 23:40:14,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:14,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:14,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:14,550 INFO L87 Difference]: Start difference. First operand 1096 states and 3837 transitions. Second operand 5 states. [2021-01-06 23:40:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:14,642 INFO L93 Difference]: Finished difference Result 1849 states and 6307 transitions. [2021-01-06 23:40:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 23:40:14,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:40:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:14,655 INFO L225 Difference]: With dead ends: 1849 [2021-01-06 23:40:14,655 INFO L226 Difference]: Without dead ends: 1408 [2021-01-06 23:40:14,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-01-06 23:40:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1084. [2021-01-06 23:40:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2021-01-06 23:40:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3766 transitions. [2021-01-06 23:40:14,707 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3766 transitions. Word has length 13 [2021-01-06 23:40:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:14,708 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 3766 transitions. [2021-01-06 23:40:14,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3766 transitions. [2021-01-06 23:40:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:40:14,710 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:14,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:14,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:40:14,711 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:14,711 INFO L82 PathProgramCache]: Analyzing trace with hash 581046225, now seen corresponding path program 1 times [2021-01-06 23:40:14,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:14,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688986763] [2021-01-06 23:40:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:14,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688986763] [2021-01-06 23:40:14,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:14,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:40:14,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754085710] [2021-01-06 23:40:14,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:40:14,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:40:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:14,789 INFO L87 Difference]: Start difference. First operand 1084 states and 3766 transitions. Second operand 6 states. [2021-01-06 23:40:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:14,846 INFO L93 Difference]: Finished difference Result 1315 states and 4460 transitions. [2021-01-06 23:40:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:40:14,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 23:40:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:14,853 INFO L225 Difference]: With dead ends: 1315 [2021-01-06 23:40:14,853 INFO L226 Difference]: Without dead ends: 670 [2021-01-06 23:40:14,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-01-06 23:40:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2021-01-06 23:40:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2021-01-06 23:40:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2160 transitions. [2021-01-06 23:40:14,879 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2160 transitions. Word has length 14 [2021-01-06 23:40:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:14,879 INFO L481 AbstractCegarLoop]: Abstraction has 670 states and 2160 transitions. [2021-01-06 23:40:14,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:40:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2160 transitions. [2021-01-06 23:40:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:40:14,881 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:14,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:14,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:40:14,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1189524077, now seen corresponding path program 1 times [2021-01-06 23:40:14,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039994786] [2021-01-06 23:40:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:14,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039994786] [2021-01-06 23:40:14,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:14,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:40:14,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651288309] [2021-01-06 23:40:14,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:40:14,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:40:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:14,950 INFO L87 Difference]: Start difference. First operand 670 states and 2160 transitions. Second operand 6 states. [2021-01-06 23:40:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:15,005 INFO L93 Difference]: Finished difference Result 790 states and 2510 transitions. [2021-01-06 23:40:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:40:15,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:40:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:15,009 INFO L225 Difference]: With dead ends: 790 [2021-01-06 23:40:15,009 INFO L226 Difference]: Without dead ends: 316 [2021-01-06 23:40:15,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-01-06 23:40:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-01-06 23:40:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2021-01-06 23:40:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 934 transitions. [2021-01-06 23:40:15,021 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 934 transitions. Word has length 15 [2021-01-06 23:40:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:15,021 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 934 transitions. [2021-01-06 23:40:15,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:40:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 934 transitions. [2021-01-06 23:40:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:40:15,022 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:15,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:15,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:40:15,022 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:15,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:15,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2113265253, now seen corresponding path program 1 times [2021-01-06 23:40:15,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:15,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297439566] [2021-01-06 23:40:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:15,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297439566] [2021-01-06 23:40:15,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:15,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:40:15,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793131014] [2021-01-06 23:40:15,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:15,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:15,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:15,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:15,084 INFO L87 Difference]: Start difference. First operand 316 states and 934 transitions. Second operand 5 states. [2021-01-06 23:40:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:15,122 INFO L93 Difference]: Finished difference Result 340 states and 974 transitions. [2021-01-06 23:40:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:40:15,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 23:40:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:15,125 INFO L225 Difference]: With dead ends: 340 [2021-01-06 23:40:15,125 INFO L226 Difference]: Without dead ends: 292 [2021-01-06 23:40:15,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-01-06 23:40:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-01-06 23:40:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-01-06 23:40:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2021-01-06 23:40:15,136 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2021-01-06 23:40:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:15,137 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2021-01-06 23:40:15,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2021-01-06 23:40:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:40:15,138 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:15,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:15,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:40:15,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1420368766, now seen corresponding path program 1 times [2021-01-06 23:40:15,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:15,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551497348] [2021-01-06 23:40:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:15,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551497348] [2021-01-06 23:40:15,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:15,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:40:15,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745584083] [2021-01-06 23:40:15,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:40:15,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:15,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:40:15,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:15,206 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 6 states. [2021-01-06 23:40:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:15,254 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2021-01-06 23:40:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:40:15,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 23:40:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:15,256 INFO L225 Difference]: With dead ends: 352 [2021-01-06 23:40:15,256 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 23:40:15,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 23:40:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-01-06 23:40:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-06 23:40:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2021-01-06 23:40:15,263 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2021-01-06 23:40:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:15,264 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2021-01-06 23:40:15,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:40:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2021-01-06 23:40:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:40:15,264 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:15,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:15,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:40:15,265 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash -673573280, now seen corresponding path program 1 times [2021-01-06 23:40:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:15,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390209570] [2021-01-06 23:40:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:40:15,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390209570] [2021-01-06 23:40:15,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:15,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:40:15,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851918433] [2021-01-06 23:40:15,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:40:15,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:40:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:15,330 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 6 states. [2021-01-06 23:40:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:15,368 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2021-01-06 23:40:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:40:15,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 23:40:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:15,369 INFO L225 Difference]: With dead ends: 130 [2021-01-06 23:40:15,369 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:40:15,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:40:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:40:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:40:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:40:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:40:15,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 23:40:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:15,371 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:40:15,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:40:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:40:15,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:40:15,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:40:15,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:40:15 BasicIcfg [2021-01-06 23:40:15,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:40:15,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:40:15,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:40:15,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:40:15,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:08" (3/4) ... [2021-01-06 23:40:15,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:40:15,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:40:15,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:40:15,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:40:15,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:40:15,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:40:15,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:40:15,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:40:15,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:40:15,449 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/thin002_pso.oepc.i-witness.graphml [2021-01-06 23:40:15,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:40:15,451 INFO L168 Benchmark]: Toolchain (without parser) took 8700.14 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 126.7 MB in the beginning and 148.3 MB in the end (delta: -21.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,452 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:40:15,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.32 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 95.2 MB in the end (delta: 31.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.00 ms. Allocated memory is still 153.1 MB. Free memory was 95.0 MB in the beginning and 93.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,454 INFO L168 Benchmark]: Boogie Preprocessor took 35.69 ms. Allocated memory is still 153.1 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,457 INFO L168 Benchmark]: RCFGBuilder took 633.14 ms. Allocated memory is still 153.1 MB. Free memory was 91.5 MB in the beginning and 66.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,458 INFO L168 Benchmark]: TraceAbstraction took 7197.57 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 66.6 MB in the beginning and 151.4 MB in the end (delta: -84.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:40:15,458 INFO L168 Benchmark]: Witness Printer took 73.58 ms. Allocated memory is still 222.3 MB. Free memory was 151.4 MB in the beginning and 148.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:15,465 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 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 685.32 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 95.2 MB in the end (delta: 31.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 65.00 ms. Allocated memory is still 153.1 MB. Free memory was 95.0 MB in the beginning and 93.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.69 ms. Allocated memory is still 153.1 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 633.14 ms. Allocated memory is still 153.1 MB. Free memory was 91.5 MB in the beginning and 66.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7197.57 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 66.6 MB in the beginning and 151.4 MB in the end (delta: -84.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 73.58 ms. Allocated memory is still 222.3 MB. Free memory was 151.4 MB in the beginning and 148.3 MB in the end (delta: 3.1 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 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 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, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 343 SDtfs, 479 SDslu, 595 SDs, 0 SdLazy, 136 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 414 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 10292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...