/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/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:37:33,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:37:33,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:37:33,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:37:33,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:37:33,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:37:33,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:37:33,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:37:33,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:37:33,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:37:33,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:37:33,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:37:33,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:37:33,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:37:33,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:37:33,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:37:33,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:37:33,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:37:33,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:37:33,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:37:33,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:37:33,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:37:33,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:37:33,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:37:33,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:37:33,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:37:33,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:37:33,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:37:33,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:37:33,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:37:33,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:37:33,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:37:33,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:37:33,419 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:37:33,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:37:33,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:37:33,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:37:33,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:37:33,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:37:33,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:37:33,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:37:33,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:37:33,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:37:33,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:37:33,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:37:33,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:37:33,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:37:33,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:37:33,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:37:33,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:37:33,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:37:33,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:37:33,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:37:33,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:37:33,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:37:33,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:37:33,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:37:33,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:37:33,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:37:33,865 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:37:33,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2021-01-06 23:37:33,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e6daa0e1b/53609bc9ecdd4294b23f8144ae80f6f9/FLAG4f5d133a7 [2021-01-06 23:37:34,827 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:37:34,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2021-01-06 23:37:34,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e6daa0e1b/53609bc9ecdd4294b23f8144ae80f6f9/FLAG4f5d133a7 [2021-01-06 23:37:35,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e6daa0e1b/53609bc9ecdd4294b23f8144ae80f6f9 [2021-01-06 23:37:35,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:37:35,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:37:35,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:35,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:37:35,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:37:35,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:35,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca63979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35, skipping insertion in model container [2021-01-06 23:37:35,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:35,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:37:35,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:37:35,325 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/safe027_tso.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[~__unbuffered_p0_EBX~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[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:35,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:35,703 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:37:35,720 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:35,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:35,906 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:37:35,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35 WrapperNode [2021-01-06 23:37:35,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:35,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:35,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:37:35,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:37:35,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:35,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:36,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:37:36,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:37:36,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:37:36,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... [2021-01-06 23:37:36,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:37:36,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:37:36,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:37:36,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:37:36,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:37:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:37:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:37:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:37:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:37:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:37:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:37:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:37:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:37:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:37:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:37:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:37:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:37:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:37:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:37:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:37:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:37:36,220 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:37:36,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:37:36,798 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:37:36,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:36 BoogieIcfgContainer [2021-01-06 23:37:36,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:37:36,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:37:36,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:37:36,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:37:36,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:37:35" (1/3) ... [2021-01-06 23:37:36,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4335d4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:36, skipping insertion in model container [2021-01-06 23:37:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:35" (2/3) ... [2021-01-06 23:37:36,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4335d4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:36, skipping insertion in model container [2021-01-06 23:37:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:36" (3/3) ... [2021-01-06 23:37:36,810 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2021-01-06 23:37:36,820 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:37:36,820 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:37:36,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:37:36,826 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:37:36,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,868 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,868 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,873 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,874 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,874 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,876 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,876 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,876 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,876 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,876 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,877 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,877 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,877 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,877 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,880 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,886 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,887 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,887 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,887 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,891 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:36,896 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:37:36,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:37:36,940 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:37:36,940 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:37:36,940 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:37:36,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:37:36,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:37:36,941 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:37:36,941 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:37:36,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:37:36,959 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:37:36,961 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:36,965 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:36,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:37,042 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-01-06 23:37:37,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:37:37,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 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. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-01-06 23:37:37,065 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-01-06 23:37:40,497 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 23:37:40,701 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 23:37:41,532 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 23:37:42,970 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 23:37:43,142 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-06 23:37:43,550 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 23:37:43,729 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-06 23:37:44,119 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2021-01-06 23:37:44,119 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-01-06 23:37:44,134 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-01-06 23:37:44,189 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2021-01-06 23:37:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2021-01-06 23:37:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:37:44,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:44,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:44,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:44,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2021-01-06 23:37:44,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:44,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992640331] [2021-01-06 23:37:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:44,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992640331] [2021-01-06 23:37:44,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:44,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:37:44,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254522818] [2021-01-06 23:37:44,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:37:44,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:37:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:37:44,618 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2021-01-06 23:37:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:44,720 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2021-01-06 23:37:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:44,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 23:37:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:44,762 INFO L225 Difference]: With dead ends: 832 [2021-01-06 23:37:44,762 INFO L226 Difference]: Without dead ends: 553 [2021-01-06 23:37:44,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:37:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-01-06 23:37:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2021-01-06 23:37:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2021-01-06 23:37:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2021-01-06 23:37:44,890 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2021-01-06 23:37:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:44,891 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2021-01-06 23:37:44,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:37:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2021-01-06 23:37:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:37:44,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:44,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:44,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:37:44,896 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:44,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2021-01-06 23:37:44,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:44,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554219432] [2021-01-06 23:37:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554219432] [2021-01-06 23:37:45,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:45,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127653248] [2021-01-06 23:37:45,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:45,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:45,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,066 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2021-01-06 23:37:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:45,097 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2021-01-06 23:37:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:45,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:37:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:45,104 INFO L225 Difference]: With dead ends: 526 [2021-01-06 23:37:45,105 INFO L226 Difference]: Without dead ends: 526 [2021-01-06 23:37:45,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-01-06 23:37:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-01-06 23:37:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2021-01-06 23:37:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2021-01-06 23:37:45,156 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2021-01-06 23:37:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:45,157 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2021-01-06 23:37:45,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2021-01-06 23:37:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:37:45,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:45,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:45,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:37:45,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2021-01-06 23:37:45,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:45,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817850527] [2021-01-06 23:37:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817850527] [2021-01-06 23:37:45,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:45,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662811098] [2021-01-06 23:37:45,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:45,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:45,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,296 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2021-01-06 23:37:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:45,340 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2021-01-06 23:37:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:45,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:37:45,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:45,345 INFO L225 Difference]: With dead ends: 682 [2021-01-06 23:37:45,346 INFO L226 Difference]: Without dead ends: 394 [2021-01-06 23:37:45,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-01-06 23:37:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-01-06 23:37:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-01-06 23:37:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2021-01-06 23:37:45,367 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2021-01-06 23:37:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:45,367 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2021-01-06 23:37:45,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2021-01-06 23:37:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:37:45,370 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:45,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:45,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:37:45,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2021-01-06 23:37:45,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:45,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406420360] [2021-01-06 23:37:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406420360] [2021-01-06 23:37:45,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:45,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184515188] [2021-01-06 23:37:45,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:45,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,468 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 4 states. [2021-01-06 23:37:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:45,491 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2021-01-06 23:37:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:45,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 23:37:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:45,496 INFO L225 Difference]: With dead ends: 376 [2021-01-06 23:37:45,497 INFO L226 Difference]: Without dead ends: 376 [2021-01-06 23:37:45,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-01-06 23:37:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-01-06 23:37:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-01-06 23:37:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2021-01-06 23:37:45,513 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2021-01-06 23:37:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:45,514 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2021-01-06 23:37:45,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2021-01-06 23:37:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:37:45,515 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:45,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:45,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:37:45,516 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2021-01-06 23:37:45,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:45,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659683897] [2021-01-06 23:37:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659683897] [2021-01-06 23:37:45,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212159615] [2021-01-06 23:37:45,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:45,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:45,589 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2021-01-06 23:37:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:45,635 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2021-01-06 23:37:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:45,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:37:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:45,638 INFO L225 Difference]: With dead ends: 466 [2021-01-06 23:37:45,638 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 23:37:45,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 23:37:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-01-06 23:37:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-06 23:37:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2021-01-06 23:37:45,649 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2021-01-06 23:37:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2021-01-06 23:37:45,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2021-01-06 23:37:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:37:45,650 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:45,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:45,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:37:45,651 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2021-01-06 23:37:45,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:45,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127220465] [2021-01-06 23:37:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127220465] [2021-01-06 23:37:45,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:45,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852644400] [2021-01-06 23:37:45,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:45,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:45,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:45,716 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2021-01-06 23:37:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:45,782 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2021-01-06 23:37:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:45,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:37:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:45,785 INFO L225 Difference]: With dead ends: 287 [2021-01-06 23:37:45,785 INFO L226 Difference]: Without dead ends: 206 [2021-01-06 23:37:45,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-01-06 23:37:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-01-06 23:37:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-01-06 23:37:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2021-01-06 23:37:45,794 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2021-01-06 23:37:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:45,795 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2021-01-06 23:37:45,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2021-01-06 23:37:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:37:45,796 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:45,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:45,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:37:45,797 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:45,797 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2021-01-06 23:37:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:45,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767953057] [2021-01-06 23:37:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:45,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767953057] [2021-01-06 23:37:45,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:45,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:45,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564043947] [2021-01-06 23:37:45,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:45,923 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2021-01-06 23:37:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:46,009 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2021-01-06 23:37:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:37:46,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:37:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:46,011 INFO L225 Difference]: With dead ends: 227 [2021-01-06 23:37:46,012 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 23:37:46,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 23:37:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-01-06 23:37:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 23:37:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2021-01-06 23:37:46,019 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2021-01-06 23:37:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:46,019 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2021-01-06 23:37:46,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2021-01-06 23:37:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:37:46,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:46,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:46,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:37:46,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2021-01-06 23:37:46,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:46,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978855407] [2021-01-06 23:37:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:46,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978855407] [2021-01-06 23:37:46,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:46,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:37:46,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000029035] [2021-01-06 23:37:46,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:37:46,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:46,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:37:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:46,097 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2021-01-06 23:37:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:46,203 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2021-01-06 23:37:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:37:46,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:37:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:46,206 INFO L225 Difference]: With dead ends: 158 [2021-01-06 23:37:46,206 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 23:37:46,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 23:37:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-01-06 23:37:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 23:37:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2021-01-06 23:37:46,212 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2021-01-06 23:37:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:46,212 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2021-01-06 23:37:46,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:37:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2021-01-06 23:37:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:46,213 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:46,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:46,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:37:46,214 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2021-01-06 23:37:46,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:46,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461651926] [2021-01-06 23:37:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:46,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461651926] [2021-01-06 23:37:46,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:46,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:46,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538947637] [2021-01-06 23:37:46,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:46,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:46,268 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2021-01-06 23:37:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:46,297 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2021-01-06 23:37:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:46,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 23:37:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:46,300 INFO L225 Difference]: With dead ends: 166 [2021-01-06 23:37:46,300 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 23:37:46,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 23:37:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-01-06 23:37:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 23:37:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2021-01-06 23:37:46,306 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2021-01-06 23:37:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:46,306 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2021-01-06 23:37:46,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2021-01-06 23:37:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:46,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:46,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:46,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:37:46,308 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2021-01-06 23:37:46,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:46,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922484729] [2021-01-06 23:37:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:46,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922484729] [2021-01-06 23:37:46,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:46,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:46,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715001559] [2021-01-06 23:37:46,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:46,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:46,354 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2021-01-06 23:37:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:46,383 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2021-01-06 23:37:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:46,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 23:37:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:46,385 INFO L225 Difference]: With dead ends: 142 [2021-01-06 23:37:46,385 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 23:37:46,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 23:37:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-01-06 23:37:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 23:37:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2021-01-06 23:37:46,389 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2021-01-06 23:37:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:46,389 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2021-01-06 23:37:46,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2021-01-06 23:37:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:46,390 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:46,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:46,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:37:46,390 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:46,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2021-01-06 23:37:46,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:46,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375686751] [2021-01-06 23:37:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375686751] [2021-01-06 23:37:46,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:46,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:37:46,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378513971] [2021-01-06 23:37:46,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 23:37:46,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 23:37:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:46,499 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2021-01-06 23:37:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:46,572 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2021-01-06 23:37:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:37:46,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 23:37:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:46,573 INFO L225 Difference]: With dead ends: 81 [2021-01-06 23:37:46,573 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:37:46,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:37:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:37:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:37:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:37:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:37:46,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 23:37:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:46,575 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:37:46,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 23:37:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:37:46,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:37:46,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:37:46,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:37:46 BasicIcfg [2021-01-06 23:37:46,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:37:46,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:37:46,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:37:46,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:37:46,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:36" (3/4) ... [2021-01-06 23:37:46,585 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:37:46,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:37:46,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:37:46,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:37:46,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:37:46,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:37:46,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:37:46,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:46,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:46,640 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe027_tso.opt.i-witness.graphml [2021-01-06 23:37:46,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:37:46,642 INFO L168 Benchmark]: Toolchain (without parser) took 11589.65 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 117.4 MB in the beginning and 90.3 MB in the end (delta: 27.2 MB). Peak memory consumption was 60.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,642 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:37:46,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.89 ms. Allocated memory is still 162.5 MB. Free memory was 117.1 MB in the beginning and 85.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.45 ms. Allocated memory is still 162.5 MB. Free memory was 85.7 MB in the beginning and 142.7 MB in the end (delta: -57.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,644 INFO L168 Benchmark]: Boogie Preprocessor took 65.05 ms. Allocated memory is still 162.5 MB. Free memory was 142.7 MB in the beginning and 141.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,644 INFO L168 Benchmark]: RCFGBuilder took 698.90 ms. Allocated memory is still 162.5 MB. Free memory was 141.1 MB in the beginning and 117.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,645 INFO L168 Benchmark]: TraceAbstraction took 9777.35 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 117.0 MB in the beginning and 92.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,646 INFO L168 Benchmark]: Witness Printer took 60.32 ms. Allocated memory is still 195.0 MB. Free memory was 92.9 MB in the beginning and 90.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:46,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 852.89 ms. Allocated memory is still 162.5 MB. Free memory was 117.1 MB in the beginning and 85.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 126.45 ms. Allocated memory is still 162.5 MB. Free memory was 85.7 MB in the beginning and 142.7 MB in the end (delta: -57.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.05 ms. Allocated memory is still 162.5 MB. Free memory was 142.7 MB in the beginning and 141.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.90 ms. Allocated memory is still 162.5 MB. Free memory was 141.1 MB in the beginning and 117.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9777.35 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 117.0 MB in the beginning and 92.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. * Witness Printer took 60.32 ms. Allocated memory is still 195.0 MB. Free memory was 92.9 MB in the beginning and 90.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.1s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 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, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 236 SDtfs, 285 SDslu, 340 SDs, 0 SdLazy, 180 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...