/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.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:41:26,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:41:26,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:41:26,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:41:26,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:41:26,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:41:26,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:41:26,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:41:26,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:41:26,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:41:26,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:41:26,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:41:26,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:41:26,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:41:26,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:41:26,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:41:26,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:41:26,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:41:26,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:41:26,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:41:26,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:41:26,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:41:26,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:41:26,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:41:26,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:41:26,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:41:26,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:41:26,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:41:26,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:41:26,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:41:26,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:41:26,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:41:26,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:41:26,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:41:26,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:41:26,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:41:26,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:41:26,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:41:26,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:41:26,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:41:26,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:41:26,882 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:41:26,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:41:26,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:41:26,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:41:26,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:41:26,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:41:26,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:41:26,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:41:26,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:41:26,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:41:26,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:41:26,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:41:26,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:41:26,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:41:26,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:41:26,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:41:26,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:41:26,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:41:26,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:41:26,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:41:26,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:41:26,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:41:27,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:41:27,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:41:27,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:41:27,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:41:27,260 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:41:27,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-12-23 13:41:27,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24a8b8dca/1ddf273a174648dbb78f9851028f0353/FLAG129406612 [2020-12-23 13:41:28,085 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:41:28,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-12-23 13:41:28,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24a8b8dca/1ddf273a174648dbb78f9851028f0353/FLAG129406612 [2020-12-23 13:41:28,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24a8b8dca/1ddf273a174648dbb78f9851028f0353 [2020-12-23 13:41:28,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:41:28,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:41:28,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:41:28,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:41:28,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:41:28,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:28" (1/1) ... [2020-12-23 13:41:28,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e04b91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:28, skipping insertion in model container [2020-12-23 13:41:28,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:28" (1/1) ... [2020-12-23 13:41:28,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:41:28,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:41:28,642 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.opt.i[949,962] 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$tmp_guard1~0,GLOBAL] [2020-12-23 13:41:28,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:41:28,996 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:41:29,016 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:41:29,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:41:29,250 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:41:29,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29 WrapperNode [2020-12-23 13:41:29,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:41:29,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:41:29,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:41:29,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:41:29,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:41:29,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:41:29,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:41:29,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:41:29,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (1/1) ... [2020-12-23 13:41:29,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:41:29,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:41:29,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:41:29,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:41:29,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (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 [2020-12-23 13:41:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:41:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:41:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:41:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:41:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:41:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:41:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:41:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:41:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:41:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:41:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-23 13:41:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-23 13:41:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:41:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:41:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:41:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:41:29,547 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:41:30,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:41:30,026 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:41:30,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:30 BoogieIcfgContainer [2020-12-23 13:41:30,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:41:30,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:41:30,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:41:30,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:41:30,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:41:28" (1/3) ... [2020-12-23 13:41:30,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@968aa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:30, skipping insertion in model container [2020-12-23 13:41:30,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:29" (2/3) ... [2020-12-23 13:41:30,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@968aa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:30, skipping insertion in model container [2020-12-23 13:41:30,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:30" (3/3) ... [2020-12-23 13:41:30,037 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-12-23 13:41:30,043 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:41:30,044 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:41:30,049 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:41:30,049 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:41:30,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,094 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,094 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,094 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,096 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,096 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,099 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,099 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,099 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,099 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,100 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,100 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,109 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,110 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,110 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,110 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:41:30,117 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:41:30,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 13:41:30,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:41:30,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:41:30,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:41:30,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:41:30,160 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:41:30,160 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:41:30,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:41:30,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:41:30,173 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:41:30,176 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-23 13:41:30,179 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-23 13:41:30,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2020-12-23 13:41:30,230 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2020-12-23 13:41:30,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:41:30,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-23 13:41:30,242 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-23 13:41:32,897 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 13:41:33,054 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 13:41:33,461 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:41:33,770 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:41:33,925 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2020-12-23 13:41:33,926 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-23 13:41:33,932 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-12-23 13:41:33,994 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-12-23 13:41:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-12-23 13:41:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:41:34,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:34,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:34,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:34,014 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2020-12-23 13:41:34,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:34,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853920007] [2020-12-23 13:41:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:34,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853920007] [2020-12-23 13:41:34,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:34,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:41:34,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676731416] [2020-12-23 13:41:34,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:41:34,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:34,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:41:34,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:41:34,238 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-12-23 13:41:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:34,291 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-12-23 13:41:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:41:34,292 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 13:41:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:34,335 INFO L225 Difference]: With dead ends: 850 [2020-12-23 13:41:34,336 INFO L226 Difference]: Without dead ends: 706 [2020-12-23 13:41:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:41:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-12-23 13:41:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-12-23 13:41:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-12-23 13:41:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-12-23 13:41:34,494 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-12-23 13:41:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:34,496 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-12-23 13:41:34,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:41:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-12-23 13:41:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:41:34,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:34,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:34,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:41:34,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2020-12-23 13:41:34,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:34,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352282838] [2020-12-23 13:41:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:34,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352282838] [2020-12-23 13:41:34,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:34,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:41:34,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103081569] [2020-12-23 13:41:34,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:41:34,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:34,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:41:34,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:41:34,772 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-12-23 13:41:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:34,868 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2020-12-23 13:41:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:41:34,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:41:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:34,883 INFO L225 Difference]: With dead ends: 1412 [2020-12-23 13:41:34,883 INFO L226 Difference]: Without dead ends: 1104 [2020-12-23 13:41:34,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-12-23 13:41:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2020-12-23 13:41:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-12-23 13:41:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2020-12-23 13:41:34,959 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2020-12-23 13:41:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:34,960 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2020-12-23 13:41:34,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:41:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2020-12-23 13:41:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:41:34,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:34,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:34,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:41:34,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:34,981 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2020-12-23 13:41:34,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:34,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730288477] [2020-12-23 13:41:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:35,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730288477] [2020-12-23 13:41:35,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:35,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:41:35,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942571745] [2020-12-23 13:41:35,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:35,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:35,166 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2020-12-23 13:41:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:35,250 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2020-12-23 13:41:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:41:35,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:41:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:35,260 INFO L225 Difference]: With dead ends: 1245 [2020-12-23 13:41:35,260 INFO L226 Difference]: Without dead ends: 1014 [2020-12-23 13:41:35,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-12-23 13:41:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 806. [2020-12-23 13:41:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-12-23 13:41:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2638 transitions. [2020-12-23 13:41:35,300 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2638 transitions. Word has length 12 [2020-12-23 13:41:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:35,300 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 2638 transitions. [2020-12-23 13:41:35,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2638 transitions. [2020-12-23 13:41:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:41:35,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:35,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:35,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:41:35,302 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1094137873, now seen corresponding path program 1 times [2020-12-23 13:41:35,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:35,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968892748] [2020-12-23 13:41:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:35,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968892748] [2020-12-23 13:41:35,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:35,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:41:35,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941107910] [2020-12-23 13:41:35,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:35,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:35,399 INFO L87 Difference]: Start difference. First operand 806 states and 2638 transitions. Second operand 5 states. [2020-12-23 13:41:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:35,487 INFO L93 Difference]: Finished difference Result 1094 states and 3416 transitions. [2020-12-23 13:41:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:41:35,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:41:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:35,496 INFO L225 Difference]: With dead ends: 1094 [2020-12-23 13:41:35,496 INFO L226 Difference]: Without dead ends: 934 [2020-12-23 13:41:35,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-12-23 13:41:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 710. [2020-12-23 13:41:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-12-23 13:41:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2290 transitions. [2020-12-23 13:41:35,532 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2290 transitions. Word has length 12 [2020-12-23 13:41:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:35,532 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 2290 transitions. [2020-12-23 13:41:35,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2290 transitions. [2020-12-23 13:41:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:41:35,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:35,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:35,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:41:35,534 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1912675369, now seen corresponding path program 1 times [2020-12-23 13:41:35,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:35,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761515460] [2020-12-23 13:41:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:35,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761515460] [2020-12-23 13:41:35,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:35,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:41:35,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393923507] [2020-12-23 13:41:35,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:35,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:35,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:35,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:35,598 INFO L87 Difference]: Start difference. First operand 710 states and 2290 transitions. Second operand 5 states. [2020-12-23 13:41:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:35,676 INFO L93 Difference]: Finished difference Result 1024 states and 3137 transitions. [2020-12-23 13:41:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:41:35,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:41:35,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:35,684 INFO L225 Difference]: With dead ends: 1024 [2020-12-23 13:41:35,685 INFO L226 Difference]: Without dead ends: 874 [2020-12-23 13:41:35,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-12-23 13:41:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 666. [2020-12-23 13:41:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-12-23 13:41:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2118 transitions. [2020-12-23 13:41:35,751 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2118 transitions. Word has length 13 [2020-12-23 13:41:35,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:35,751 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 2118 transitions. [2020-12-23 13:41:35,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2118 transitions. [2020-12-23 13:41:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:41:35,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:35,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:35,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:41:35,753 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:35,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1163214657, now seen corresponding path program 1 times [2020-12-23 13:41:35,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:35,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135743112] [2020-12-23 13:41:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:35,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135743112] [2020-12-23 13:41:35,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:35,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:35,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107598665] [2020-12-23 13:41:35,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:35,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:35,827 INFO L87 Difference]: Start difference. First operand 666 states and 2118 transitions. Second operand 5 states. [2020-12-23 13:41:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:35,898 INFO L93 Difference]: Finished difference Result 1050 states and 3172 transitions. [2020-12-23 13:41:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:41:35,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:41:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:35,904 INFO L225 Difference]: With dead ends: 1050 [2020-12-23 13:41:35,904 INFO L226 Difference]: Without dead ends: 802 [2020-12-23 13:41:35,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-12-23 13:41:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 586. [2020-12-23 13:41:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-12-23 13:41:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1786 transitions. [2020-12-23 13:41:35,930 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1786 transitions. Word has length 14 [2020-12-23 13:41:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:35,930 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1786 transitions. [2020-12-23 13:41:35,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1786 transitions. [2020-12-23 13:41:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:41:35,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:35,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:35,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:41:35,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2014475768, now seen corresponding path program 1 times [2020-12-23 13:41:35,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:35,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541366454] [2020-12-23 13:41:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:35,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541366454] [2020-12-23 13:41:35,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:35,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:35,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211650444] [2020-12-23 13:41:35,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:41:35,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:41:35,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:41:35,998 INFO L87 Difference]: Start difference. First operand 586 states and 1786 transitions. Second operand 6 states. [2020-12-23 13:41:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,057 INFO L93 Difference]: Finished difference Result 990 states and 2964 transitions. [2020-12-23 13:41:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:41:36,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:41:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,062 INFO L225 Difference]: With dead ends: 990 [2020-12-23 13:41:36,062 INFO L226 Difference]: Without dead ends: 570 [2020-12-23 13:41:36,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:41:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-23 13:41:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 442. [2020-12-23 13:41:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-23 13:41:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2020-12-23 13:41:36,080 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 14 [2020-12-23 13:41:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,080 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2020-12-23 13:41:36,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:41:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2020-12-23 13:41:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:41:36,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:41:36,082 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1683713572, now seen corresponding path program 2 times [2020-12-23 13:41:36,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101969893] [2020-12-23 13:41:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101969893] [2020-12-23 13:41:36,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:41:36,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704565397] [2020-12-23 13:41:36,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:41:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:41:36,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:41:36,128 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand 4 states. [2020-12-23 13:41:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,149 INFO L93 Difference]: Finished difference Result 466 states and 1380 transitions. [2020-12-23 13:41:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:41:36,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:41:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,153 INFO L225 Difference]: With dead ends: 466 [2020-12-23 13:41:36,153 INFO L226 Difference]: Without dead ends: 418 [2020-12-23 13:41:36,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-12-23 13:41:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-12-23 13:41:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-23 13:41:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1252 transitions. [2020-12-23 13:41:36,168 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1252 transitions. Word has length 14 [2020-12-23 13:41:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,169 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1252 transitions. [2020-12-23 13:41:36,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:41:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1252 transitions. [2020-12-23 13:41:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:41:36,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:41:36,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2020-12-23 13:41:36,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626864971] [2020-12-23 13:41:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626864971] [2020-12-23 13:41:36,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:36,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265224275] [2020-12-23 13:41:36,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:36,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:36,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:36,223 INFO L87 Difference]: Start difference. First operand 418 states and 1252 transitions. Second operand 5 states. [2020-12-23 13:41:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,280 INFO L93 Difference]: Finished difference Result 686 states and 1964 transitions. [2020-12-23 13:41:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:41:36,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:41:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,284 INFO L225 Difference]: With dead ends: 686 [2020-12-23 13:41:36,284 INFO L226 Difference]: Without dead ends: 514 [2020-12-23 13:41:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-12-23 13:41:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 394. [2020-12-23 13:41:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-23 13:41:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-12-23 13:41:36,300 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-12-23 13:41:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,301 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-12-23 13:41:36,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-12-23 13:41:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:41:36,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:41:36,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2020-12-23 13:41:36,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116123926] [2020-12-23 13:41:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116123926] [2020-12-23 13:41:36,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:41:36,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665602128] [2020-12-23 13:41:36,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:41:36,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:41:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:41:36,339 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 3 states. [2020-12-23 13:41:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,351 INFO L93 Difference]: Finished difference Result 358 states and 974 transitions. [2020-12-23 13:41:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:41:36,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 13:41:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,355 INFO L225 Difference]: With dead ends: 358 [2020-12-23 13:41:36,355 INFO L226 Difference]: Without dead ends: 358 [2020-12-23 13:41:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:41:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-23 13:41:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-23 13:41:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-23 13:41:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 974 transitions. [2020-12-23 13:41:36,367 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 974 transitions. Word has length 15 [2020-12-23 13:41:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,367 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 974 transitions. [2020-12-23 13:41:36,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:41:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 974 transitions. [2020-12-23 13:41:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:41:36,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:41:36,369 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2020-12-23 13:41:36,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975410596] [2020-12-23 13:41:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975410596] [2020-12-23 13:41:36,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:41:36,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228116007] [2020-12-23 13:41:36,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:41:36,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:41:36,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:41:36,409 INFO L87 Difference]: Start difference. First operand 358 states and 974 transitions. Second operand 4 states. [2020-12-23 13:41:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,430 INFO L93 Difference]: Finished difference Result 282 states and 692 transitions. [2020-12-23 13:41:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:41:36,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 13:41:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,432 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:41:36,432 INFO L226 Difference]: Without dead ends: 282 [2020-12-23 13:41:36,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:41:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-23 13:41:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-23 13:41:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-23 13:41:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 692 transitions. [2020-12-23 13:41:36,441 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 692 transitions. Word has length 16 [2020-12-23 13:41:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,442 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 692 transitions. [2020-12-23 13:41:36,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:41:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 692 transitions. [2020-12-23 13:41:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:41:36,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:41:36,443 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,444 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2020-12-23 13:41:36,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985524818] [2020-12-23 13:41:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985524818] [2020-12-23 13:41:36,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:36,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512820813] [2020-12-23 13:41:36,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:36,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:36,510 INFO L87 Difference]: Start difference. First operand 282 states and 692 transitions. Second operand 5 states. [2020-12-23 13:41:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,544 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2020-12-23 13:41:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:41:36,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 13:41:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,547 INFO L225 Difference]: With dead ends: 221 [2020-12-23 13:41:36,547 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 13:41:36,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 13:41:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-12-23 13:41:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-23 13:41:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 477 transitions. [2020-12-23 13:41:36,554 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 477 transitions. Word has length 17 [2020-12-23 13:41:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,554 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 477 transitions. [2020-12-23 13:41:36,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 477 transitions. [2020-12-23 13:41:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 13:41:36,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 13:41:36,555 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2020-12-23 13:41:36,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770655515] [2020-12-23 13:41:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770655515] [2020-12-23 13:41:36,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:36,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005814336] [2020-12-23 13:41:36,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:41:36,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:41:36,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:41:36,603 INFO L87 Difference]: Start difference. First operand 205 states and 477 transitions. Second operand 5 states. [2020-12-23 13:41:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,639 INFO L93 Difference]: Finished difference Result 258 states and 580 transitions. [2020-12-23 13:41:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:41:36,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-23 13:41:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,641 INFO L225 Difference]: With dead ends: 258 [2020-12-23 13:41:36,641 INFO L226 Difference]: Without dead ends: 154 [2020-12-23 13:41:36,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:41:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-23 13:41:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2020-12-23 13:41:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 13:41:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2020-12-23 13:41:36,647 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 19 [2020-12-23 13:41:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,647 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2020-12-23 13:41:36,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:41:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2020-12-23 13:41:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 13:41:36,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 13:41:36,648 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2020-12-23 13:41:36,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381100606] [2020-12-23 13:41:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381100606] [2020-12-23 13:41:36,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:41:36,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976809780] [2020-12-23 13:41:36,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:41:36,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:41:36,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:41:36,703 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand 6 states. [2020-12-23 13:41:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,738 INFO L93 Difference]: Finished difference Result 129 states and 276 transitions. [2020-12-23 13:41:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:41:36,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 13:41:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,740 INFO L225 Difference]: With dead ends: 129 [2020-12-23 13:41:36,740 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 13:41:36,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:41:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 13:41:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 13:41:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 13:41:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2020-12-23 13:41:36,745 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2020-12-23 13:41:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,745 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2020-12-23 13:41:36,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:41:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2020-12-23 13:41:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:41:36,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:41:36,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:41:36,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 13:41:36,747 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:41:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:41:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2020-12-23 13:41:36,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:41:36,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136511106] [2020-12-23 13:41:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:41:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:41:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:41:36,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136511106] [2020-12-23 13:41:36,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:41:36,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:41:36,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472332907] [2020-12-23 13:41:36,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:41:36,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:41:36,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:41:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:41:36,818 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2020-12-23 13:41:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:41:36,843 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2020-12-23 13:41:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:41:36,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 13:41:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:41:36,844 INFO L225 Difference]: With dead ends: 52 [2020-12-23 13:41:36,844 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:41:36,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:41:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:41:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:41:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:41:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:41:36,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-23 13:41:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:41:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:41:36,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:41:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:41:36,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:41:36,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 13:41:36,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:41:36 BasicIcfg [2020-12-23 13:41:36,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:41:36,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:41:36,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:41:36,851 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:41:36,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:30" (3/4) ... [2020-12-23 13:41:36,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:41:36,861 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:41:36,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:41:36,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:41:36,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-23 13:41:36,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-23 13:41:36,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:41:36,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:41:36,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:41:36,909 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe016_pso.opt.i-witness.graphml [2020-12-23 13:41:36,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:41:36,910 INFO L168 Benchmark]: Toolchain (without parser) took 8616.11 ms. Allocated memory was 161.5 MB in the beginning and 239.1 MB in the end (delta: 77.6 MB). Free memory was 134.7 MB in the beginning and 148.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 64.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,911 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:41:36,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 953.06 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 139.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.54 ms. Allocated memory is still 161.5 MB. Free memory was 139.1 MB in the beginning and 137.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,912 INFO L168 Benchmark]: Boogie Preprocessor took 62.71 ms. Allocated memory is still 161.5 MB. Free memory was 137.5 MB in the beginning and 135.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,913 INFO L168 Benchmark]: RCFGBuilder took 605.87 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 112.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,914 INFO L168 Benchmark]: TraceAbstraction took 6820.33 ms. Allocated memory was 161.5 MB in the beginning and 239.1 MB in the end (delta: 77.6 MB). Free memory was 111.8 MB in the beginning and 151.5 MB in the end (delta: -39.7 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,914 INFO L168 Benchmark]: Witness Printer took 58.97 ms. Allocated memory is still 239.1 MB. Free memory was 151.5 MB in the beginning and 148.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:41:36,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 953.06 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 139.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.54 ms. Allocated memory is still 161.5 MB. Free memory was 139.1 MB in the beginning and 137.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.71 ms. Allocated memory is still 161.5 MB. Free memory was 137.5 MB in the beginning and 135.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 605.87 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 112.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6820.33 ms. Allocated memory was 161.5 MB in the beginning and 239.1 MB in the end (delta: 77.6 MB). Free memory was 111.8 MB in the beginning and 151.5 MB in the end (delta: -39.7 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. * Witness Printer took 58.97 ms. Allocated memory is still 239.1 MB. Free memory was 151.5 MB in the beginning and 148.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 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: 6.6s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 409 SDtfs, 421 SDslu, 694 SDs, 0 SdLazy, 266 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1308 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 13199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...