/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:32:40,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:32:40,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:32:40,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:32:40,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:32:40,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:32:40,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:32:40,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:32:40,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:32:40,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:32:40,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:32:40,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:32:40,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:32:40,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:32:40,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:32:40,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:32:40,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:32:40,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:32:40,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:32:40,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:32:40,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:32:40,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:32:40,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:32:40,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:32:40,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:32:40,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:32:40,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:32:40,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:32:40,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:32:40,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:32:40,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:32:40,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:32:40,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:32:40,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:32:40,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:32:40,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:32:40,590 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 23:32:40,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:32:40,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:32:40,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:32:40,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:32:40,620 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:32:40,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:32:40,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:32:40,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:32:40,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:32:40,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:32:40,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:32:40,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:32:40,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:32:40,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:32:40,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:32:40,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:32:40,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:32:40,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:32:40,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:32:40,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:32:40,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:32:40,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:32:40,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:32:40,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:32:40,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:32:40,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:32:40,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:32:41,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:32:41,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:32:41,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:32:41,034 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:32:41,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2021-01-06 23:32:41,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/176d70163/4550460685eb47cb8e1ea869f0405499/FLAG3992a306a [2021-01-06 23:32:41,838 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:32:41,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2021-01-06 23:32:41,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/176d70163/4550460685eb47cb8e1ea869f0405499/FLAG3992a306a [2021-01-06 23:32:42,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/176d70163/4550460685eb47cb8e1ea869f0405499 [2021-01-06 23:32:42,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:32:42,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:32:42,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:42,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:32:42,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:32:42,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd75bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42, skipping insertion in model container [2021-01-06 23:32:42,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:32:42,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:32:42,361 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/safe009_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[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:42,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:42,670 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:32:42,689 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:42,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:42,864 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:32:42,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42 WrapperNode [2021-01-06 23:32:42,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:42,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:42,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:32:42,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:32:42,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:42,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:32:42,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:32:42,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:32:42,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:43,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:43,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:43,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:43,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:32:43,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:32:43,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:32:43,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:32:43,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (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 23:32:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:32:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:32:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:32:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:32:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:32:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:32:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:32:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:32:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:32:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:32:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:32:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:32:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:32:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:32:43,141 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 23:32:43,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:32:43,577 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:32:43,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43 BoogieIcfgContainer [2021-01-06 23:32:43,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:32:43,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:32:43,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:32:43,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:32:43,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:32:42" (1/3) ... [2021-01-06 23:32:43,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56146f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:43, skipping insertion in model container [2021-01-06 23:32:43,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (2/3) ... [2021-01-06 23:32:43,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56146f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:43, skipping insertion in model container [2021-01-06 23:32:43,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43" (3/3) ... [2021-01-06 23:32:43,593 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2021-01-06 23:32:43,600 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:32:43,600 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:32:43,606 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:32:43,607 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:32:43,639 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,641 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,641 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,644 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,644 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,648 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,648 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,648 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,648 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,658 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,664 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:32:43,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:32:43,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:32:43,711 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:32:43,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:32:43,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:32:43,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:32:43,712 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:32:43,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:32:43,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:32:43,730 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:32:43,732 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,736 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,812 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-01-06 23:32:43,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:32:43,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-01-06 23:32:43,820 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2021-01-06 23:32:46,232 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 23:32:46,505 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:32:46,608 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 23:32:46,829 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:32:47,021 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2021-01-06 23:32:47,021 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-01-06 23:32:47,029 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-01-06 23:32:47,057 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2021-01-06 23:32:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2021-01-06 23:32:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:32:47,067 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2021-01-06 23:32:47,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511014287] [2021-01-06 23:32:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,354 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 23:32:47,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511014287] [2021-01-06 23:32:47,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:47,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823368278] [2021-01-06 23:32:47,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:32:47,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:32:47,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:32:47,381 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2021-01-06 23:32:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,414 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-01-06 23:32:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:32:47,416 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:32:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,431 INFO L225 Difference]: With dead ends: 282 [2021-01-06 23:32:47,432 INFO L226 Difference]: Without dead ends: 234 [2021-01-06 23:32:47,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:32:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-01-06 23:32:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-01-06 23:32:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-01-06 23:32:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2021-01-06 23:32:47,509 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2021-01-06 23:32:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,510 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2021-01-06 23:32:47,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:32:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2021-01-06 23:32:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:32:47,512 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:32:47,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2021-01-06 23:32:47,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804831264] [2021-01-06 23:32:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,662 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 23:32:47,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804831264] [2021-01-06 23:32:47,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:47,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411484401] [2021-01-06 23:32:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:47,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:47,666 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2021-01-06 23:32:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,730 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2021-01-06 23:32:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:47,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:32:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,741 INFO L225 Difference]: With dead ends: 402 [2021-01-06 23:32:47,741 INFO L226 Difference]: Without dead ends: 308 [2021-01-06 23:32:47,742 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 23:32:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-01-06 23:32:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-01-06 23:32:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-01-06 23:32:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2021-01-06 23:32:47,776 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2021-01-06 23:32:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,777 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2021-01-06 23:32:47,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2021-01-06 23:32:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:47,779 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:32:47,780 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2021-01-06 23:32:47,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874759270] [2021-01-06 23:32:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,886 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 23:32:47,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874759270] [2021-01-06 23:32:47,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:47,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049309316] [2021-01-06 23:32:47,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:47,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:47,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:47,889 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2021-01-06 23:32:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,952 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2021-01-06 23:32:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:47,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,955 INFO L225 Difference]: With dead ends: 345 [2021-01-06 23:32:47,956 INFO L226 Difference]: Without dead ends: 278 [2021-01-06 23:32:47,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:32:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-01-06 23:32:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2021-01-06 23:32:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-01-06 23:32:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2021-01-06 23:32:47,986 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2021-01-06 23:32:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,987 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2021-01-06 23:32:47,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2021-01-06 23:32:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:47,990 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:32:47,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2021-01-06 23:32:47,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864492958] [2021-01-06 23:32:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,122 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 23:32:48,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864492958] [2021-01-06 23:32:48,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171623516] [2021-01-06 23:32:48,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,129 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2021-01-06 23:32:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,191 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2021-01-06 23:32:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:48,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,195 INFO L225 Difference]: With dead ends: 298 [2021-01-06 23:32:48,195 INFO L226 Difference]: Without dead ends: 254 [2021-01-06 23:32:48,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:32:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-01-06 23:32:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-01-06 23:32:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 23:32:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2021-01-06 23:32:48,238 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2021-01-06 23:32:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,239 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2021-01-06 23:32:48,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2021-01-06 23:32:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:32:48,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:32:48,244 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2021-01-06 23:32:48,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239376500] [2021-01-06 23:32:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,358 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 23:32:48,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239376500] [2021-01-06 23:32:48,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752100017] [2021-01-06 23:32:48,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,362 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2021-01-06 23:32:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,407 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2021-01-06 23:32:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:48,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:32:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,410 INFO L225 Difference]: With dead ends: 266 [2021-01-06 23:32:48,410 INFO L226 Difference]: Without dead ends: 242 [2021-01-06 23:32:48,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:32:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-01-06 23:32:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2021-01-06 23:32:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-06 23:32:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2021-01-06 23:32:48,422 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2021-01-06 23:32:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,423 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2021-01-06 23:32:48,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2021-01-06 23:32:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,425 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:32:48,425 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2021-01-06 23:32:48,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112239088] [2021-01-06 23:32:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,490 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 23:32:48,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112239088] [2021-01-06 23:32:48,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031162423] [2021-01-06 23:32:48,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:48,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:48,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:48,493 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2021-01-06 23:32:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,545 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2021-01-06 23:32:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:48,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 23:32:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,547 INFO L225 Difference]: With dead ends: 300 [2021-01-06 23:32:48,547 INFO L226 Difference]: Without dead ends: 180 [2021-01-06 23:32:48,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-01-06 23:32:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2021-01-06 23:32:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-01-06 23:32:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2021-01-06 23:32:48,556 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2021-01-06 23:32:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,557 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2021-01-06 23:32:48,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2021-01-06 23:32:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:32:48,559 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2021-01-06 23:32:48,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230202337] [2021-01-06 23:32:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,607 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 23:32:48,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230202337] [2021-01-06 23:32:48,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097591752] [2021-01-06 23:32:48,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,610 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2021-01-06 23:32:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,659 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2021-01-06 23:32:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:48,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:32:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,661 INFO L225 Difference]: With dead ends: 254 [2021-01-06 23:32:48,661 INFO L226 Difference]: Without dead ends: 144 [2021-01-06 23:32:48,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-06 23:32:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2021-01-06 23:32:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 23:32:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2021-01-06 23:32:48,667 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2021-01-06 23:32:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,668 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2021-01-06 23:32:48,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2021-01-06 23:32:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:32:48,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2021-01-06 23:32:48,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443906830] [2021-01-06 23:32:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,717 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 23:32:48,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443906830] [2021-01-06 23:32:48,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157557931] [2021-01-06 23:32:48,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,720 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2021-01-06 23:32:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,762 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2021-01-06 23:32:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:48,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:32:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,764 INFO L225 Difference]: With dead ends: 134 [2021-01-06 23:32:48,764 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 23:32:48,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 23:32:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-01-06 23:32:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 23:32:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-01-06 23:32:48,768 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2021-01-06 23:32:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,768 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-01-06 23:32:48,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-01-06 23:32:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:32:48,769 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:32:48,769 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,770 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2021-01-06 23:32:48,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829788811] [2021-01-06 23:32:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,824 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 23:32:48,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829788811] [2021-01-06 23:32:48,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851388471] [2021-01-06 23:32:48,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:48,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:48,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:48,827 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2021-01-06 23:32:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,848 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2021-01-06 23:32:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:32:48,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:32:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,849 INFO L225 Difference]: With dead ends: 58 [2021-01-06 23:32:48,849 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 23:32:48,849 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 23:32:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 23:32:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-01-06 23:32:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 23:32:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2021-01-06 23:32:48,852 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2021-01-06 23:32:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,852 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2021-01-06 23:32:48,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2021-01-06 23:32:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:32:48,853 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:32:48,853 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2021-01-06 23:32:48,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530293653] [2021-01-06 23:32:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,902 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 23:32:48,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530293653] [2021-01-06 23:32:48,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370968669] [2021-01-06 23:32:48,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,905 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2021-01-06 23:32:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,934 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-01-06 23:32:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:48,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:32:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,935 INFO L225 Difference]: With dead ends: 35 [2021-01-06 23:32:48,935 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 23:32:48,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:32:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 23:32:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 23:32:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 23:32:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-01-06 23:32:48,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2021-01-06 23:32:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,938 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-01-06 23:32:48,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-01-06 23:32:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:32:48,938 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:32:48,939 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2021-01-06 23:32:48,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789290507] [2021-01-06 23:32:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,992 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 23:32:48,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789290507] [2021-01-06 23:32:48,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:32:48,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016104438] [2021-01-06 23:32:48,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:48,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:48,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:48,994 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2021-01-06 23:32:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:49,028 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-01-06 23:32:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:49,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:32:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:49,029 INFO L225 Difference]: With dead ends: 21 [2021-01-06 23:32:49,029 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:32:49,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:32:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:32:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:32:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:32:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:32:49,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 23:32:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:49,030 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:32:49,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:32:49,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:32:49,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:32:49,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:32:49 BasicIcfg [2021-01-06 23:32:49,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:32:49,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:32:49,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:32:49,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:32:49,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43" (3/4) ... [2021-01-06 23:32:49,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:32:49,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:32:49,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:32:49,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:32:49,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:32:49,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:32:49,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:49,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:49,095 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe009_tso.opt.i-witness.graphml [2021-01-06 23:32:49,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:32:49,097 INFO L168 Benchmark]: Toolchain (without parser) took 6975.17 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 130.5 MB in the beginning and 102.8 MB in the end (delta: 27.7 MB). Peak memory consumption was 97.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,098 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:32:49,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.67 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 134.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.66 ms. Allocated memory is still 157.3 MB. Free memory was 134.8 MB in the beginning and 132.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,100 INFO L168 Benchmark]: Boogie Preprocessor took 62.82 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,100 INFO L168 Benchmark]: RCFGBuilder took 550.64 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 109.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,101 INFO L168 Benchmark]: TraceAbstraction took 5452.85 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 109.7 MB in the beginning and 105.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,101 INFO L168 Benchmark]: Witness Printer took 60.82 ms. Allocated memory is still 226.5 MB. Free memory was 105.5 MB in the beginning and 102.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:49,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 740.67 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 134.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 92.66 ms. Allocated memory is still 157.3 MB. Free memory was 134.8 MB in the beginning and 132.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.82 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.64 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 109.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5452.85 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 109.7 MB in the beginning and 105.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. * Witness Printer took 60.82 ms. Allocated memory is still 226.5 MB. Free memory was 105.5 MB in the beginning and 102.8 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 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 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...