/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:34:12,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:34:12,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:34:12,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:34:12,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:34:12,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:34:12,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:34:12,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:34:12,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:34:12,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:34:12,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:34:12,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:34:12,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:34:12,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:34:12,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:34:12,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:34:12,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:34:12,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:34:12,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:34:12,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:34:12,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:34:12,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:34:12,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:34:12,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:34:12,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:34:12,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:34:12,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:34:12,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:34:12,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:34:12,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:34:12,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:34:12,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:34:12,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:34:12,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:34:12,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:34:12,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:34:12,160 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 23:34:12,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:34:12,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:34:12,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:34:12,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:34:12,212 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:34:12,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:34:12,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:34:12,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:34:12,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:34:12,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:34:12,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:34:12,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:34:12,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:34:12,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:34:12,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:34:12,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:34:12,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:34:12,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:34:12,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:34:12,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:34:12,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:34:12,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:34:12,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:34:12,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:34:12,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:34:12,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:34:12,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:34:12,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:34:12,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:34:12,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:34:12,676 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:34:12,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2021-01-06 23:34:12,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7ca3940e2/2ef2bd1eab004b96ad917684266cc917/FLAG1de39a0e7 [2021-01-06 23:34:13,542 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:34:13,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2021-01-06 23:34:13,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7ca3940e2/2ef2bd1eab004b96ad917684266cc917/FLAG1de39a0e7 [2021-01-06 23:34:13,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7ca3940e2/2ef2bd1eab004b96ad917684266cc917 [2021-01-06 23:34:13,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:34:13,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:34:13,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:13,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:34:13,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:34:13,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:13" (1/1) ... [2021-01-06 23:34:13,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5423442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:13, skipping insertion in model container [2021-01-06 23:34:13,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:13" (1/1) ... [2021-01-06 23:34:13,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:34:13,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:34:14,144 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/safe016_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[~x~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[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~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[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:14,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:14,474 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:34:14,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:14,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:14,701 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:34:14,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14 WrapperNode [2021-01-06 23:34:14,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:14,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:14,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:34:14,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:34:14,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:14,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:34:14,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:34:14,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:34:14,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (1/1) ... [2021-01-06 23:34:14,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:34:14,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:34:14,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:34:14,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:34:14,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (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 23:34:14,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:34:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:34:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:34:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:34:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:34:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:34:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:34:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:34:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:34:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:34:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:34:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:34:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:34:14,974 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 23:34:15,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:34:15,467 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:34:15,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:15 BoogieIcfgContainer [2021-01-06 23:34:15,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:34:15,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:34:15,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:34:15,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:34:15,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:34:13" (1/3) ... [2021-01-06 23:34:15,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730012d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:15, skipping insertion in model container [2021-01-06 23:34:15,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:14" (2/3) ... [2021-01-06 23:34:15,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730012d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:15, skipping insertion in model container [2021-01-06 23:34:15,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:15" (3/3) ... [2021-01-06 23:34:15,479 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-01-06 23:34:15,487 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:34:15,487 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:34:15,493 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:34:15,494 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:34:15,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,543 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,543 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,543 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,544 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,544 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,545 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,545 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,548 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,549 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,549 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,556 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,556 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,557 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,557 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,563 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,564 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:15,566 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:34:15,588 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:34:15,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:34:15,615 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:34:15,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:34:15,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:34:15,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:34:15,615 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:34:15,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:34:15,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:34:15,631 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:34:15,634 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:15,638 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:15,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:15,721 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-01-06 23:34:15,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:34:15,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-01-06 23:34:15,748 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-01-06 23:34:18,496 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 23:34:18,657 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 23:34:19,057 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:19,366 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:19,552 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2021-01-06 23:34:19,552 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-01-06 23:34:19,563 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-01-06 23:34:19,660 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2021-01-06 23:34:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2021-01-06 23:34:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:34:19,677 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:19,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:19,679 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:19,692 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2021-01-06 23:34:19,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:19,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151865795] [2021-01-06 23:34:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:19,932 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 23:34:19,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151865795] [2021-01-06 23:34:19,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:19,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:19,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103720537] [2021-01-06 23:34:19,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:34:19,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:34:19,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:34:19,970 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2021-01-06 23:34:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:20,041 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2021-01-06 23:34:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:34:20,043 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 23:34:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:20,085 INFO L225 Difference]: With dead ends: 850 [2021-01-06 23:34:20,085 INFO L226 Difference]: Without dead ends: 706 [2021-01-06 23:34:20,087 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 23:34:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-01-06 23:34:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-01-06 23:34:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2021-01-06 23:34:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-01-06 23:34:20,246 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-01-06 23:34:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:20,247 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-01-06 23:34:20,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:34:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-01-06 23:34:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:34:20,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:20,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:20,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:34:20,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2021-01-06 23:34:20,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057280558] [2021-01-06 23:34:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:20,495 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 23:34:20,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057280558] [2021-01-06 23:34:20,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:20,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:20,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653344400] [2021-01-06 23:34:20,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:20,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:20,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:20,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:20,500 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2021-01-06 23:34:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:20,585 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2021-01-06 23:34:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:20,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:34:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:20,597 INFO L225 Difference]: With dead ends: 1412 [2021-01-06 23:34:20,597 INFO L226 Difference]: Without dead ends: 1104 [2021-01-06 23:34:20,598 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 23:34:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-01-06 23:34:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2021-01-06 23:34:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-01-06 23:34:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2021-01-06 23:34:20,649 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2021-01-06 23:34:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:20,650 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2021-01-06 23:34:20,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2021-01-06 23:34:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:20,653 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:20,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:20,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:34:20,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:20,655 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2021-01-06 23:34:20,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:20,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297394230] [2021-01-06 23:34:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:20,744 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 23:34:20,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297394230] [2021-01-06 23:34:20,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:20,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:20,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781806452] [2021-01-06 23:34:20,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:20,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:20,747 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2021-01-06 23:34:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:20,835 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2021-01-06 23:34:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:20,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:20,845 INFO L225 Difference]: With dead ends: 1245 [2021-01-06 23:34:20,845 INFO L226 Difference]: Without dead ends: 1014 [2021-01-06 23:34:20,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:34:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-01-06 23:34:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 830. [2021-01-06 23:34:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2021-01-06 23:34:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2702 transitions. [2021-01-06 23:34:20,884 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2702 transitions. Word has length 12 [2021-01-06 23:34:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:20,885 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 2702 transitions. [2021-01-06 23:34:20,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2702 transitions. [2021-01-06 23:34:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:20,891 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:20,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:20,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:34:20,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1324654725, now seen corresponding path program 1 times [2021-01-06 23:34:20,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:20,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872978717] [2021-01-06 23:34:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,032 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 23:34:21,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872978717] [2021-01-06 23:34:21,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:21,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451674392] [2021-01-06 23:34:21,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:21,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:21,035 INFO L87 Difference]: Start difference. First operand 830 states and 2702 transitions. Second operand 5 states. [2021-01-06 23:34:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,131 INFO L93 Difference]: Finished difference Result 1078 states and 3372 transitions. [2021-01-06 23:34:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:21,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,147 INFO L225 Difference]: With dead ends: 1078 [2021-01-06 23:34:21,147 INFO L226 Difference]: Without dead ends: 934 [2021-01-06 23:34:21,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:34:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-01-06 23:34:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 750. [2021-01-06 23:34:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2021-01-06 23:34:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2414 transitions. [2021-01-06 23:34:21,187 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2414 transitions. Word has length 12 [2021-01-06 23:34:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,188 INFO L481 AbstractCegarLoop]: Abstraction has 750 states and 2414 transitions. [2021-01-06 23:34:21,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2414 transitions. [2021-01-06 23:34:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:34:21,189 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:21,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:34:21,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2143192221, now seen corresponding path program 1 times [2021-01-06 23:34:21,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:21,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237436231] [2021-01-06 23:34:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,309 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 23:34:21,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237436231] [2021-01-06 23:34:21,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:21,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726871114] [2021-01-06 23:34:21,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:21,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:21,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:21,311 INFO L87 Difference]: Start difference. First operand 750 states and 2414 transitions. Second operand 4 states. [2021-01-06 23:34:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,342 INFO L93 Difference]: Finished difference Result 794 states and 2496 transitions. [2021-01-06 23:34:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:21,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:34:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,350 INFO L225 Difference]: With dead ends: 794 [2021-01-06 23:34:21,350 INFO L226 Difference]: Without dead ends: 706 [2021-01-06 23:34:21,350 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 23:34:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-01-06 23:34:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 658. [2021-01-06 23:34:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2021-01-06 23:34:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2100 transitions. [2021-01-06 23:34:21,379 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2100 transitions. Word has length 13 [2021-01-06 23:34:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,379 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2100 transitions. [2021-01-06 23:34:21,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2100 transitions. [2021-01-06 23:34:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:34:21,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:21,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:34:21,382 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1163230994, now seen corresponding path program 1 times [2021-01-06 23:34:21,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:21,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472942816] [2021-01-06 23:34:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,484 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 23:34:21,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472942816] [2021-01-06 23:34:21,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:21,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613540144] [2021-01-06 23:34:21,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:21,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:21,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:21,488 INFO L87 Difference]: Start difference. First operand 658 states and 2100 transitions. Second operand 5 states. [2021-01-06 23:34:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,548 INFO L93 Difference]: Finished difference Result 978 states and 3040 transitions. [2021-01-06 23:34:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:21,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:34:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,554 INFO L225 Difference]: With dead ends: 978 [2021-01-06 23:34:21,554 INFO L226 Difference]: Without dead ends: 498 [2021-01-06 23:34:21,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:34:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-01-06 23:34:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-01-06 23:34:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-01-06 23:34:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1528 transitions. [2021-01-06 23:34:21,576 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1528 transitions. Word has length 14 [2021-01-06 23:34:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,577 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 1528 transitions. [2021-01-06 23:34:21,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1528 transitions. [2021-01-06 23:34:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:34:21,579 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:21,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:34:21,579 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2021-01-06 23:34:21,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:21,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010147126] [2021-01-06 23:34:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,665 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 23:34:21,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010147126] [2021-01-06 23:34:21,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:21,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634023890] [2021-01-06 23:34:21,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:21,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:21,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:21,670 INFO L87 Difference]: Start difference. First operand 498 states and 1528 transitions. Second operand 5 states. [2021-01-06 23:34:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,731 INFO L93 Difference]: Finished difference Result 774 states and 2260 transitions. [2021-01-06 23:34:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:21,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:34:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,736 INFO L225 Difference]: With dead ends: 774 [2021-01-06 23:34:21,736 INFO L226 Difference]: Without dead ends: 602 [2021-01-06 23:34:21,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:34:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-01-06 23:34:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 442. [2021-01-06 23:34:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-01-06 23:34:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1320 transitions. [2021-01-06 23:34:21,757 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1320 transitions. Word has length 15 [2021-01-06 23:34:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,758 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1320 transitions. [2021-01-06 23:34:21,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1320 transitions. [2021-01-06 23:34:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:34:21,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:21,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:34:21,766 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,766 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2021-01-06 23:34:21,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:21,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509362347] [2021-01-06 23:34:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,846 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 23:34:21,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509362347] [2021-01-06 23:34:21,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:21,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540367121] [2021-01-06 23:34:21,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:34:21,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:34:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:34:21,849 INFO L87 Difference]: Start difference. First operand 442 states and 1320 transitions. Second operand 3 states. [2021-01-06 23:34:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,863 INFO L93 Difference]: Finished difference Result 400 states and 1123 transitions. [2021-01-06 23:34:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:34:21,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 23:34:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,866 INFO L225 Difference]: With dead ends: 400 [2021-01-06 23:34:21,867 INFO L226 Difference]: Without dead ends: 400 [2021-01-06 23:34:21,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:34:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-01-06 23:34:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-01-06 23:34:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2021-01-06 23:34:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1123 transitions. [2021-01-06 23:34:21,882 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1123 transitions. Word has length 15 [2021-01-06 23:34:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,882 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 1123 transitions. [2021-01-06 23:34:21,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:34:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1123 transitions. [2021-01-06 23:34:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:34:21,884 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:21,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:34:21,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2021-01-06 23:34:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:21,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675908628] [2021-01-06 23:34:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:21,946 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 23:34:21,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675908628] [2021-01-06 23:34:21,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:21,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:21,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359534757] [2021-01-06 23:34:21,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:21,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:21,950 INFO L87 Difference]: Start difference. First operand 400 states and 1123 transitions. Second operand 4 states. [2021-01-06 23:34:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:21,979 INFO L93 Difference]: Finished difference Result 309 states and 779 transitions. [2021-01-06 23:34:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:21,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 23:34:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:21,982 INFO L225 Difference]: With dead ends: 309 [2021-01-06 23:34:21,982 INFO L226 Difference]: Without dead ends: 309 [2021-01-06 23:34:21,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-01-06 23:34:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-01-06 23:34:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-01-06 23:34:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 779 transitions. [2021-01-06 23:34:21,996 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 779 transitions. Word has length 16 [2021-01-06 23:34:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:21,997 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 779 transitions. [2021-01-06 23:34:21,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 779 transitions. [2021-01-06 23:34:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:34:21,998 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:21,998 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 23:34:21,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:34:21,999 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2021-01-06 23:34:21,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:22,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513642457] [2021-01-06 23:34:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:22,080 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 23:34:22,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513642457] [2021-01-06 23:34:22,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:22,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:22,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382536115] [2021-01-06 23:34:22,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:22,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:22,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:22,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:22,082 INFO L87 Difference]: Start difference. First operand 309 states and 779 transitions. Second operand 5 states. [2021-01-06 23:34:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:22,114 INFO L93 Difference]: Finished difference Result 236 states and 571 transitions. [2021-01-06 23:34:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:22,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 23:34:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:22,116 INFO L225 Difference]: With dead ends: 236 [2021-01-06 23:34:22,116 INFO L226 Difference]: Without dead ends: 228 [2021-01-06 23:34:22,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-01-06 23:34:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2021-01-06 23:34:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-01-06 23:34:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 537 transitions. [2021-01-06 23:34:22,125 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 537 transitions. Word has length 17 [2021-01-06 23:34:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:22,125 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 537 transitions. [2021-01-06 23:34:22,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 537 transitions. [2021-01-06 23:34:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 23:34:22,126 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:22,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:22,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:34:22,127 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2021-01-06 23:34:22,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:22,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008933153] [2021-01-06 23:34:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:22,171 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 23:34:22,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008933153] [2021-01-06 23:34:22,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:22,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:22,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338069597] [2021-01-06 23:34:22,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:22,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:22,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:22,173 INFO L87 Difference]: Start difference. First operand 224 states and 537 transitions. Second operand 5 states. [2021-01-06 23:34:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:22,210 INFO L93 Difference]: Finished difference Result 276 states and 638 transitions. [2021-01-06 23:34:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:22,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-06 23:34:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:22,212 INFO L225 Difference]: With dead ends: 276 [2021-01-06 23:34:22,212 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 23:34:22,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:34:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 23:34:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2021-01-06 23:34:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-01-06 23:34:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 338 transitions. [2021-01-06 23:34:22,218 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 338 transitions. Word has length 19 [2021-01-06 23:34:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:22,218 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 338 transitions. [2021-01-06 23:34:22,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 338 transitions. [2021-01-06 23:34:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 23:34:22,219 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:22,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:22,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:34:22,220 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2021-01-06 23:34:22,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:22,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307252491] [2021-01-06 23:34:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:22,270 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 23:34:22,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307252491] [2021-01-06 23:34:22,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:22,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:34:22,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023810748] [2021-01-06 23:34:22,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:22,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:22,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:22,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:22,272 INFO L87 Difference]: Start difference. First operand 158 states and 338 transitions. Second operand 6 states. [2021-01-06 23:34:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:22,309 INFO L93 Difference]: Finished difference Result 137 states and 298 transitions. [2021-01-06 23:34:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:22,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 23:34:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:22,310 INFO L225 Difference]: With dead ends: 137 [2021-01-06 23:34:22,310 INFO L226 Difference]: Without dead ends: 53 [2021-01-06 23:34:22,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-06 23:34:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-06 23:34:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 23:34:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2021-01-06 23:34:22,313 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2021-01-06 23:34:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:22,313 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2021-01-06 23:34:22,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2021-01-06 23:34:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 23:34:22,314 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:22,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:22,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 23:34:22,314 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:22,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:22,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2021-01-06 23:34:22,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:22,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591334717] [2021-01-06 23:34:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:22,393 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 23:34:22,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591334717] [2021-01-06 23:34:22,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:22,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:22,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053786958] [2021-01-06 23:34:22,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:22,399 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2021-01-06 23:34:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:22,426 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2021-01-06 23:34:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:22,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-06 23:34:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:22,427 INFO L225 Difference]: With dead ends: 52 [2021-01-06 23:34:22,427 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:34:22,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:34:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:34:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:34:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:34:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:34:22,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-01-06 23:34:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:22,428 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:34:22,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:34:22,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:34:22,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 23:34:22,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:34:22 BasicIcfg [2021-01-06 23:34:22,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:34:22,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:34:22,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:34:22,434 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:34:22,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:15" (3/4) ... [2021-01-06 23:34:22,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:34:22,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:34:22,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:34:22,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:34:22,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:34:22,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:34:22,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:34:22,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:22,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:22,537 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe016_pso.oepc.i-witness.graphml [2021-01-06 23:34:22,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:34:22,539 INFO L168 Benchmark]: Toolchain (without parser) took 8693.12 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 124.6 MB in the beginning and 131.3 MB in the end (delta: -6.7 MB). Peak memory consumption was 67.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,540 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:34:22,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 855.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 129.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.89 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,549 INFO L168 Benchmark]: Boogie Preprocessor took 65.45 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,550 INFO L168 Benchmark]: RCFGBuilder took 620.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 102.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,550 INFO L168 Benchmark]: TraceAbstraction took 6962.30 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 101.7 MB in the beginning and 133.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,551 INFO L168 Benchmark]: Witness Printer took 103.64 ms. Allocated memory is still 223.3 MB. Free memory was 133.9 MB in the beginning and 131.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:22,556 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 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 855.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 129.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 77.89 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.45 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 620.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 102.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6962.30 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 101.7 MB in the beginning and 133.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * Witness Printer took 103.64 ms. Allocated memory is still 223.3 MB. Free memory was 133.9 MB in the beginning and 131.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 336 SDtfs, 334 SDslu, 541 SDs, 0 SdLazy, 200 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 784 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 12345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...