/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/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:35:02,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:35:02,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:35:02,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:35:02,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:35:02,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:35:02,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:35:02,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:35:02,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:35:02,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:35:02,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:35:02,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:35:02,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:35:02,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:35:02,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:35:02,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:35:02,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:35:02,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:35:02,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:35:02,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:35:02,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:35:02,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:35:02,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:35:02,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:35:02,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 23:35:02,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 23:35:02,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 23:35:02,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 23:35:02,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 23:35:02,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 23:35:02,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:35:02,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:35:02,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:35:02,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:35:02,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:35:02,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:35:02,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:35:02,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:35:02,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:35:02,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:35:02,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:35:02,622 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 23:35:02,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:35:02,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:35:02,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:35:02,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:35:02,687 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:35:02,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:35:02,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:35:02,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:35:02,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:35:02,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:35:02,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:35:02,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:35:02,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:35:02,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:35:02,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:35:02,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:35:02,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:35:02,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:35:02,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:35:02,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:35:02,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:35:02,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:35:02,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:35:02,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:35:02,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:35:02,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:35:03,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:35:03,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:35:03,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:35:03,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:35:03,179 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:35:03,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2021-01-06 23:35:03,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1490cac81/1a9337402e9e4fa69041ab6f930ded2a/FLAG3d622902f [2021-01-06 23:35:04,121 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:35:04,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2021-01-06 23:35:04,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1490cac81/1a9337402e9e4fa69041ab6f930ded2a/FLAG3d622902f [2021-01-06 23:35:04,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1490cac81/1a9337402e9e4fa69041ab6f930ded2a [2021-01-06 23:35:04,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:35:04,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:35:04,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:04,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:35:04,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:35:04,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:04" (1/1) ... [2021-01-06 23:35:04,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412740e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:04, skipping insertion in model container [2021-01-06 23:35:04,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:04" (1/1) ... [2021-01-06 23:35:04,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:35:04,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:35:04,652 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/safe018_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:05,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:05,032 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:35:05,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:05,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:05,281 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:35:05,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05 WrapperNode [2021-01-06 23:35:05,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:05,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:05,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:35:05,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:35:05,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:05,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:35:05,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:35:05,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:35:05,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (1/1) ... [2021-01-06 23:35:05,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:35:05,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:35:05,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:35:05,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:35:05,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (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 23:35:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:35:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:35:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:35:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:35:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:35:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:35:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:35:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:35:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:35:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:35:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:35:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:35:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:35:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:35:05,594 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 23:35:06,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:35:06,127 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:35:06,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:06 BoogieIcfgContainer [2021-01-06 23:35:06,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:35:06,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:35:06,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:35:06,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:35:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:35:04" (1/3) ... [2021-01-06 23:35:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b967c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:06, skipping insertion in model container [2021-01-06 23:35:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:05" (2/3) ... [2021-01-06 23:35:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b967c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:06, skipping insertion in model container [2021-01-06 23:35:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:06" (3/3) ... [2021-01-06 23:35:06,139 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-01-06 23:35:06,146 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:35:06,147 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:35:06,153 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:35:06,154 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:35:06,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,212 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,212 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:06,214 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:35:06,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:35:06,258 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:35:06,259 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:35:06,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:35:06,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:35:06,259 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:35:06,259 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:35:06,259 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:35:06,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:35:06,274 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:35:06,276 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:35:06,280 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:35:06,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-01-06 23:35:06,341 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-01-06 23:35:06,342 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:35:06,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-01-06 23:35:06,357 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-01-06 23:35:09,832 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:35:09,940 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:35:10,206 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:35:10,318 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:35:10,331 INFO L131 LiptonReduction]: Checked pairs total: 2020 [2021-01-06 23:35:10,331 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-01-06 23:35:10,340 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-01-06 23:35:10,371 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2021-01-06 23:35:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-01-06 23:35:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:35:10,384 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:10,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:10,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:10,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:10,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1647941983, now seen corresponding path program 1 times [2021-01-06 23:35:10,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:10,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581301553] [2021-01-06 23:35:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:10,632 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 23:35:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581301553] [2021-01-06 23:35:10,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:10,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:10,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058918265] [2021-01-06 23:35:10,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:35:10,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:35:10,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:35:10,671 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2021-01-06 23:35:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:10,718 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2021-01-06 23:35:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:35:10,720 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:35:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:10,738 INFO L225 Difference]: With dead ends: 274 [2021-01-06 23:35:10,738 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 23:35:10,740 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 23:35:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 23:35:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-01-06 23:35:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-06 23:35:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-01-06 23:35:10,818 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-01-06 23:35:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:10,820 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-01-06 23:35:10,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:35:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-01-06 23:35:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:35:10,822 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:10,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:10,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:35:10,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash -453422130, now seen corresponding path program 1 times [2021-01-06 23:35:10,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:10,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818307892] [2021-01-06 23:35:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:11,068 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 23:35:11,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818307892] [2021-01-06 23:35:11,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:11,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:11,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801621497] [2021-01-06 23:35:11,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:11,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:11,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:11,076 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2021-01-06 23:35:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:11,153 INFO L93 Difference]: Finished difference Result 268 states and 719 transitions. [2021-01-06 23:35:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:11,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:35:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:11,157 INFO L225 Difference]: With dead ends: 268 [2021-01-06 23:35:11,157 INFO L226 Difference]: Without dead ends: 220 [2021-01-06 23:35:11,158 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 23:35:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-01-06 23:35:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-01-06 23:35:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2021-01-06 23:35:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2021-01-06 23:35:11,181 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 9 [2021-01-06 23:35:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:11,182 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2021-01-06 23:35:11,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2021-01-06 23:35:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:35:11,184 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:11,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:11,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:35:11,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1814079141, now seen corresponding path program 1 times [2021-01-06 23:35:11,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:11,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120948605] [2021-01-06 23:35:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:11,353 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 23:35:11,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120948605] [2021-01-06 23:35:11,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:11,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:11,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661627636] [2021-01-06 23:35:11,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:11,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:11,359 INFO L87 Difference]: Start difference. First operand 220 states and 612 transitions. Second operand 5 states. [2021-01-06 23:35:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:11,489 INFO L93 Difference]: Finished difference Result 295 states and 800 transitions. [2021-01-06 23:35:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 23:35:11,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:35:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:11,494 INFO L225 Difference]: With dead ends: 295 [2021-01-06 23:35:11,494 INFO L226 Difference]: Without dead ends: 250 [2021-01-06 23:35:11,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:35:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-01-06 23:35:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2021-01-06 23:35:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-01-06 23:35:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 641 transitions. [2021-01-06 23:35:11,542 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 641 transitions. Word has length 10 [2021-01-06 23:35:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:11,543 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 641 transitions. [2021-01-06 23:35:11,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 641 transitions. [2021-01-06 23:35:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:35:11,547 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:11,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:11,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:35:11,547 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:11,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1172176569, now seen corresponding path program 1 times [2021-01-06 23:35:11,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:11,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350793541] [2021-01-06 23:35:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:11,694 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 23:35:11,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350793541] [2021-01-06 23:35:11,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:11,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:11,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856892414] [2021-01-06 23:35:11,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:11,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:11,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:11,697 INFO L87 Difference]: Start difference. First operand 232 states and 641 transitions. Second operand 5 states. [2021-01-06 23:35:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:11,740 INFO L93 Difference]: Finished difference Result 250 states and 665 transitions. [2021-01-06 23:35:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:11,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:35:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:11,743 INFO L225 Difference]: With dead ends: 250 [2021-01-06 23:35:11,743 INFO L226 Difference]: Without dead ends: 214 [2021-01-06 23:35:11,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-01-06 23:35:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-01-06 23:35:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-06 23:35:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 581 transitions. [2021-01-06 23:35:11,755 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 581 transitions. Word has length 10 [2021-01-06 23:35:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:11,755 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 581 transitions. [2021-01-06 23:35:11,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:11,756 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 581 transitions. [2021-01-06 23:35:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:35:11,757 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:11,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:11,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:35:11,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:11,758 INFO L82 PathProgramCache]: Analyzing trace with hash 329174463, now seen corresponding path program 1 times [2021-01-06 23:35:11,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:11,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117463535] [2021-01-06 23:35:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:11,856 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 23:35:11,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117463535] [2021-01-06 23:35:11,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:11,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:11,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183802205] [2021-01-06 23:35:11,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:11,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:11,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:11,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:11,862 INFO L87 Difference]: Start difference. First operand 214 states and 581 transitions. Second operand 5 states. [2021-01-06 23:35:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:11,907 INFO L93 Difference]: Finished difference Result 226 states and 595 transitions. [2021-01-06 23:35:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:11,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:35:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:11,911 INFO L225 Difference]: With dead ends: 226 [2021-01-06 23:35:11,911 INFO L226 Difference]: Without dead ends: 202 [2021-01-06 23:35:11,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-01-06 23:35:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-01-06 23:35:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 23:35:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 543 transitions. [2021-01-06 23:35:11,923 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 543 transitions. Word has length 11 [2021-01-06 23:35:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:11,923 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 543 transitions. [2021-01-06 23:35:11,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 543 transitions. [2021-01-06 23:35:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:35:11,926 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:11,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:11,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:35:11,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:11,927 INFO L82 PathProgramCache]: Analyzing trace with hash 400886096, now seen corresponding path program 1 times [2021-01-06 23:35:11,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:11,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131720540] [2021-01-06 23:35:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,064 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 23:35:12,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131720540] [2021-01-06 23:35:12,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443956565] [2021-01-06 23:35:12,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:35:12,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:35:12,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:12,067 INFO L87 Difference]: Start difference. First operand 202 states and 543 transitions. Second operand 6 states. [2021-01-06 23:35:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,136 INFO L93 Difference]: Finished difference Result 247 states and 648 transitions. [2021-01-06 23:35:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:12,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 23:35:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,138 INFO L225 Difference]: With dead ends: 247 [2021-01-06 23:35:12,138 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 23:35:12,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:35:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 23:35:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-01-06 23:35:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-06 23:35:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2021-01-06 23:35:12,143 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 11 [2021-01-06 23:35:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,143 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2021-01-06 23:35:12,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:35:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2021-01-06 23:35:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:35:12,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:12,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:12,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:35:12,145 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:12,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1225814647, now seen corresponding path program 1 times [2021-01-06 23:35:12,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:12,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202381970] [2021-01-06 23:35:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,199 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 23:35:12,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202381970] [2021-01-06 23:35:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701115099] [2021-01-06 23:35:12,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:12,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:12,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:12,204 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2021-01-06 23:35:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,273 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2021-01-06 23:35:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:12,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:35:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,275 INFO L225 Difference]: With dead ends: 148 [2021-01-06 23:35:12,275 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 23:35:12,275 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 23:35:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 23:35:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-01-06 23:35:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 23:35:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2021-01-06 23:35:12,279 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2021-01-06 23:35:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,279 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2021-01-06 23:35:12,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2021-01-06 23:35:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:35:12,280 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:12,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:12,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:35:12,281 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash 532831146, now seen corresponding path program 1 times [2021-01-06 23:35:12,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:12,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78218395] [2021-01-06 23:35:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,334 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 23:35:12,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78218395] [2021-01-06 23:35:12,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:12,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82717736] [2021-01-06 23:35:12,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:12,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:12,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:12,336 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2021-01-06 23:35:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,407 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2021-01-06 23:35:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:12,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:35:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,416 INFO L225 Difference]: With dead ends: 87 [2021-01-06 23:35:12,416 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 23:35:12,417 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 23:35:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 23:35:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 23:35:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 23:35:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2021-01-06 23:35:12,421 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2021-01-06 23:35:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,421 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2021-01-06 23:35:12,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2021-01-06 23:35:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:35:12,422 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:12,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:12,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:35:12,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash -206155871, now seen corresponding path program 1 times [2021-01-06 23:35:12,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:12,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449722011] [2021-01-06 23:35:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,491 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 23:35:12,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449722011] [2021-01-06 23:35:12,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:12,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617963774] [2021-01-06 23:35:12,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:12,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:12,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:12,494 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2021-01-06 23:35:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,556 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2021-01-06 23:35:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:12,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:35:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,558 INFO L225 Difference]: With dead ends: 62 [2021-01-06 23:35:12,558 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 23:35:12,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 23:35:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-06 23:35:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 23:35:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2021-01-06 23:35:12,561 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2021-01-06 23:35:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,561 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2021-01-06 23:35:12,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2021-01-06 23:35:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:35:12,562 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:12,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:12,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:35:12,563 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash -2107760638, now seen corresponding path program 1 times [2021-01-06 23:35:12,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:12,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176851890] [2021-01-06 23:35:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,639 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 23:35:12,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176851890] [2021-01-06 23:35:12,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:35:12,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001246870] [2021-01-06 23:35:12,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:35:12,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:35:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:12,642 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2021-01-06 23:35:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,712 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2021-01-06 23:35:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:35:12,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:35:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,713 INFO L225 Difference]: With dead ends: 40 [2021-01-06 23:35:12,713 INFO L226 Difference]: Without dead ends: 34 [2021-01-06 23:35:12,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:35:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-06 23:35:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-06 23:35:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 23:35:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-01-06 23:35:12,716 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2021-01-06 23:35:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,716 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-01-06 23:35:12,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:35:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-01-06 23:35:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:35:12,717 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:12,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:12,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:35:12,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:12,718 INFO L82 PathProgramCache]: Analyzing trace with hash 202243322, now seen corresponding path program 1 times [2021-01-06 23:35:12,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:12,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391743698] [2021-01-06 23:35:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:12,776 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 23:35:12,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391743698] [2021-01-06 23:35:12,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:12,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:12,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467681244] [2021-01-06 23:35:12,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:12,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:12,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:12,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:12,780 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2021-01-06 23:35:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:12,813 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-01-06 23:35:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:12,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 23:35:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:12,814 INFO L225 Difference]: With dead ends: 33 [2021-01-06 23:35:12,814 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:35:12,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:35:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:35:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:35:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:35:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:35:12,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-01-06 23:35:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:12,817 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:35:12,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:35:12,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:35:12,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:35:12,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:35:12 BasicIcfg [2021-01-06 23:35:12,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:35:12,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:35:12,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:35:12,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:35:12,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:06" (3/4) ... [2021-01-06 23:35:12,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:35:12,839 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:35:12,839 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:35:12,839 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:35:12,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:35:12,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:35:12,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:12,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:12,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe018_pso.oepc.i-witness.graphml [2021-01-06 23:35:12,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:35:12,923 INFO L168 Benchmark]: Toolchain (without parser) took 8519.03 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 124.3 MB in the beginning and 152.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,927 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:35:12,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.83 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 124.9 MB in the end (delta: -900.8 kB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 122.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,932 INFO L168 Benchmark]: Boogie Preprocessor took 83.58 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 121.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,933 INFO L168 Benchmark]: RCFGBuilder took 668.41 ms. Allocated memory is still 151.0 MB. Free memory was 121.2 MB in the beginning and 99.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,936 INFO L168 Benchmark]: TraceAbstraction took 6692.98 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.2 MB in the beginning and 155.0 MB in the end (delta: -55.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,937 INFO L168 Benchmark]: Witness Printer took 96.39 ms. Allocated memory is still 223.3 MB. Free memory was 155.0 MB in the beginning and 152.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:12,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 877.83 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 124.9 MB in the end (delta: -900.8 kB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 90.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 122.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.58 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 121.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 668.41 ms. Allocated memory is still 151.0 MB. Free memory was 121.2 MB in the beginning and 99.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6692.98 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.2 MB in the beginning and 155.0 MB in the end (delta: -55.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * Witness Printer took 96.39 ms. Allocated memory is still 223.3 MB. Free memory was 155.0 MB in the beginning and 152.4 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 758 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 53 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2020 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 220 SDtfs, 244 SDslu, 367 SDs, 0 SdLazy, 167 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 6005 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...