/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:16:24,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:16:24,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:16:24,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:16:24,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:16:24,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:16:24,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:16:24,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:16:24,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:16:24,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:16:24,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:16:24,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:16:24,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:16:24,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:16:24,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:16:24,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:16:24,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:16:24,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:16:24,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:16:24,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:16:24,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:16:24,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:16:24,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:16:24,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:16:24,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:16:24,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:16:24,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:16:24,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:16:24,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:16:24,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:16:24,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:16:24,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:16:24,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:16:24,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:16:24,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:16:24,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:16:24,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:16:24,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:16:24,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:16:24,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:16:24,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:16:24,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 23:16:24,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:16:24,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:16:24,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:16:24,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:16:24,596 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:16:24,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:16:24,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:16:24,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:16:24,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:16:24,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:16:24,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:16:24,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:16:24,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:16:24,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:16:24,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:16:24,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:16:24,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:16:24,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:16:24,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:16:24,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:16:24,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:16:24,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:16:24,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:16:24,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:16:24,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:16:24,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:16:24,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:16:24,603 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:16:24,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:16:24,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:16:24,604 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:16:25,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:16:25,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:16:25,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:16:25,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:16:25,093 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:16:25,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-15 23:16:25,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87db9261/1e1b6789413a4f3192c675e4fda3b4a9/FLAGc3449f7b8 [2020-09-15 23:16:25,817 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:16:25,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-15 23:16:25,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87db9261/1e1b6789413a4f3192c675e4fda3b4a9/FLAGc3449f7b8 [2020-09-15 23:16:26,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87db9261/1e1b6789413a4f3192c675e4fda3b4a9 [2020-09-15 23:16:26,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:16:26,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:16:26,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:16:26,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:16:26,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:16:26,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:26,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3038bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26, skipping insertion in model container [2020-09-15 23:16:26,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:26,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:16:26,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:16:26,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:16:26,753 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:16:26,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:16:26,957 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:16:26,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26 WrapperNode [2020-09-15 23:16:26,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:16:26,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:16:26,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:16:26,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:16:26,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:26,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:16:27,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:16:27,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:16:27,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:16:27,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... [2020-09-15 23:16:27,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:16:27,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:16:27,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:16:27,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:16:27,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:16:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:16:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:16:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:16:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:16:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:16:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:16:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:16:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:16:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:16:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:16:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:16:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:16:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:16:27,153 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:16:27,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:16:27,560 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:16:27,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:16:27 BoogieIcfgContainer [2020-09-15 23:16:27,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:16:27,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:16:27,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:16:27,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:16:27,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:16:26" (1/3) ... [2020-09-15 23:16:27,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4510d8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:16:27, skipping insertion in model container [2020-09-15 23:16:27,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:16:26" (2/3) ... [2020-09-15 23:16:27,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4510d8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:16:27, skipping insertion in model container [2020-09-15 23:16:27,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:16:27" (3/3) ... [2020-09-15 23:16:27,576 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-09-15 23:16:27,588 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:16:27,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:16:27,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:16:27,601 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:16:27,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,636 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,636 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,652 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,652 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,672 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,672 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,672 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:16:27,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:16:27,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:16:27,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:16:27,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:16:27,730 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:16:27,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:16:27,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:16:27,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:16:27,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:16:27,751 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-15 23:16:27,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:16:27,811 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:16:27,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:16:27,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:16:27,821 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:16:27,844 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:16:27,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:16:27,845 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:16:27,847 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:16:27,849 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:16:29,249 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-15 23:16:29,327 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-15 23:16:29,328 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-15 23:16:29,333 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-15 23:16:29,365 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-15 23:16:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-15 23:16:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:16:29,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:29,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:29,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-15 23:16:29,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:29,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611495824] [2020-09-15 23:16:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:29,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611495824] [2020-09-15 23:16:29,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:29,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:16:29,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2089297947] [2020-09-15 23:16:29,615 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:29,620 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:29,643 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:16:29,644 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:29,655 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:29,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 23:16:29,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 23:16:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:16:29,685 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-15 23:16:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:29,709 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-15 23:16:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 23:16:29,711 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-15 23:16:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:29,731 INFO L225 Difference]: With dead ends: 362 [2020-09-15 23:16:29,732 INFO L226 Difference]: Without dead ends: 298 [2020-09-15 23:16:29,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:16:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-15 23:16:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-15 23:16:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-15 23:16:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-15 23:16:29,820 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-15 23:16:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:29,822 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-15 23:16:29,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 23:16:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-15 23:16:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:16:29,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:29,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:29,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:16:29,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-15 23:16:29,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:29,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176760829] [2020-09-15 23:16:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:30,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176760829] [2020-09-15 23:16:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:30,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:16:30,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1077525381] [2020-09-15 23:16:30,020 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:30,021 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:30,023 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-15 23:16:30,023 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:30,023 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:30,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:16:30,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:30,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:16:30,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:16:30,026 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-09-15 23:16:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:30,066 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-09-15 23:16:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:16:30,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-15 23:16:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:30,070 INFO L225 Difference]: With dead ends: 346 [2020-09-15 23:16:30,071 INFO L226 Difference]: Without dead ends: 282 [2020-09-15 23:16:30,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-15 23:16:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-09-15 23:16:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-15 23:16:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-09-15 23:16:30,100 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-09-15 23:16:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:30,100 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-09-15 23:16:30,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:16:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-09-15 23:16:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:16:30,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:30,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:30,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:16:30,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash -397112394, now seen corresponding path program 1 times [2020-09-15 23:16:30,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:30,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941897874] [2020-09-15 23:16:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:30,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941897874] [2020-09-15 23:16:30,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:30,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:16:30,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [766184292] [2020-09-15 23:16:30,214 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:30,215 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:30,217 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-09-15 23:16:30,217 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:30,263 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:30,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:16:30,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:30,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:16:30,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:16:30,264 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-09-15 23:16:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:30,300 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-09-15 23:16:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:16:30,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 23:16:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:30,306 INFO L225 Difference]: With dead ends: 310 [2020-09-15 23:16:30,306 INFO L226 Difference]: Without dead ends: 254 [2020-09-15 23:16:30,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-15 23:16:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-15 23:16:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-15 23:16:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-09-15 23:16:30,323 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-09-15 23:16:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:30,324 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-09-15 23:16:30,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:16:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-09-15 23:16:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:16:30,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:30,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:30,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:16:30,327 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:30,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-09-15 23:16:30,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:30,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974984581] [2020-09-15 23:16:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:30,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974984581] [2020-09-15 23:16:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:30,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:16:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [359916000] [2020-09-15 23:16:30,447 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:30,448 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:30,450 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-09-15 23:16:30,451 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:30,520 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:30,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:16:30,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:30,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:16:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:30,521 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-09-15 23:16:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:30,571 INFO L93 Difference]: Finished difference Result 320 states and 860 transitions. [2020-09-15 23:16:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:16:30,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-15 23:16:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:30,573 INFO L225 Difference]: With dead ends: 320 [2020-09-15 23:16:30,573 INFO L226 Difference]: Without dead ends: 158 [2020-09-15 23:16:30,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:16:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-15 23:16:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-15 23:16:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-15 23:16:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-09-15 23:16:30,583 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 11 [2020-09-15 23:16:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:30,584 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-09-15 23:16:30,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:16:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-09-15 23:16:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:16:30,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:30,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:30,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:16:30,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 625195173, now seen corresponding path program 1 times [2020-09-15 23:16:30,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:30,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32026893] [2020-09-15 23:16:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:30,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32026893] [2020-09-15 23:16:30,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:30,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:16:30,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [432631918] [2020-09-15 23:16:30,660 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:30,661 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:30,664 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-09-15 23:16:30,664 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:30,728 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:30,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:16:30,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:30,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:16:30,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:16:30,730 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-09-15 23:16:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:30,747 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-09-15 23:16:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:16:30,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 23:16:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:30,750 INFO L225 Difference]: With dead ends: 170 [2020-09-15 23:16:30,750 INFO L226 Difference]: Without dead ends: 146 [2020-09-15 23:16:30,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-15 23:16:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-15 23:16:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-15 23:16:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-09-15 23:16:30,757 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-09-15 23:16:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:30,758 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-09-15 23:16:30,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:16:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-09-15 23:16:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:16:30,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:30,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:30,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:16:30,760 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-09-15 23:16:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:30,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768994951] [2020-09-15 23:16:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:30,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768994951] [2020-09-15 23:16:30,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:30,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:16:30,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1156593312] [2020-09-15 23:16:30,882 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:30,884 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:30,888 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-09-15 23:16:30,888 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:30,980 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:30,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:16:30,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:16:30,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:30,981 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 5 states. [2020-09-15 23:16:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:31,026 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-09-15 23:16:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:16:31,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 23:16:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:31,028 INFO L225 Difference]: With dead ends: 176 [2020-09-15 23:16:31,029 INFO L226 Difference]: Without dead ends: 98 [2020-09-15 23:16:31,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:16:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-15 23:16:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-15 23:16:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-15 23:16:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-09-15 23:16:31,034 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-09-15 23:16:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:31,034 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-09-15 23:16:31,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:16:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-09-15 23:16:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:16:31,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:31,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:31,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:16:31,036 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-09-15 23:16:31,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:31,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806332991] [2020-09-15 23:16:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:31,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806332991] [2020-09-15 23:16:31,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:31,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:16:31,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [309230029] [2020-09-15 23:16:31,115 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:31,116 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:31,121 INFO L274 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-09-15 23:16:31,121 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:31,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,188 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,210 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,248 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,278 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,333 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5007#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:16:31,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:16:31,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:31,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:16:31,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:31,336 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-09-15 23:16:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:31,405 INFO L93 Difference]: Finished difference Result 90 states and 177 transitions. [2020-09-15 23:16:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:16:31,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-15 23:16:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:31,407 INFO L225 Difference]: With dead ends: 90 [2020-09-15 23:16:31,407 INFO L226 Difference]: Without dead ends: 68 [2020-09-15 23:16:31,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:16:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-15 23:16:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-15 23:16:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-15 23:16:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-09-15 23:16:31,411 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 14 [2020-09-15 23:16:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:31,411 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-09-15 23:16:31,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:16:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-09-15 23:16:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-15 23:16:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:31,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:31,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:16:31,413 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-09-15 23:16:31,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987466971] [2020-09-15 23:16:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:31,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987466971] [2020-09-15 23:16:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 23:16:31,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1147811645] [2020-09-15 23:16:31,495 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:31,496 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:31,500 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 74 transitions. [2020-09-15 23:16:31,500 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:31,521 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:16:31,627 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5244#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:16:31,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 23:16:31,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:31,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 23:16:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:16:31,629 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 7 states. [2020-09-15 23:16:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:31,678 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-09-15 23:16:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:16:31,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-15 23:16:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:31,679 INFO L225 Difference]: With dead ends: 61 [2020-09-15 23:16:31,680 INFO L226 Difference]: Without dead ends: 55 [2020-09-15 23:16:31,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:16:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-15 23:16:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-15 23:16:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-15 23:16:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-15 23:16:31,683 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-09-15 23:16:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:31,683 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-15 23:16:31,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 23:16:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-15 23:16:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 23:16:31,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:16:31,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:16:31,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:16:31,684 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:16:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:16:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-09-15 23:16:31,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:16:31,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293994754] [2020-09-15 23:16:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:16:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:16:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:16:31,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293994754] [2020-09-15 23:16:31,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:16:31,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:16:31,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1964301360] [2020-09-15 23:16:31,748 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:16:31,750 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:16:31,779 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 70 transitions. [2020-09-15 23:16:31,779 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:16:31,783 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:16:31,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:16:31,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:16:31,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:16:31,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:16:31,785 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-09-15 23:16:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:16:31,798 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-15 23:16:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:16:31,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-15 23:16:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:16:31,799 INFO L225 Difference]: With dead ends: 54 [2020-09-15 23:16:31,799 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:16:31,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:16:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:16:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:16:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:16:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:16:31,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-15 23:16:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:16:31,800 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:16:31,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:16:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:16:31,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:16:31,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 23:16:31,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:16:31 BasicIcfg [2020-09-15 23:16:31,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:16:31,810 INFO L168 Benchmark]: Toolchain (without parser) took 5716.60 ms. Allocated memory was 147.3 MB in the beginning and 277.9 MB in the end (delta: 130.5 MB). Free memory was 101.5 MB in the beginning and 240.1 MB in the end (delta: -138.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:16:31,811 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:16:31,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.78 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 164.2 MB in the end (delta: -63.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-15 23:16:31,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.26 ms. Allocated memory is still 206.0 MB. Free memory was 164.2 MB in the beginning and 161.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-15 23:16:31,818 INFO L168 Benchmark]: Boogie Preprocessor took 34.13 ms. Allocated memory is still 206.0 MB. Free memory was 161.6 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:16:31,818 INFO L168 Benchmark]: RCFGBuilder took 513.15 ms. Allocated memory is still 206.0 MB. Free memory was 160.2 MB in the beginning and 138.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:16:31,820 INFO L168 Benchmark]: TraceAbstraction took 4239.74 ms. Allocated memory was 206.0 MB in the beginning and 277.9 MB in the end (delta: 71.8 MB). Free memory was 137.6 MB in the beginning and 240.1 MB in the end (delta: -102.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:16:31,834 INFO L336 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 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 860.78 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 164.2 MB in the end (delta: -63.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.26 ms. Allocated memory is still 206.0 MB. Free memory was 164.2 MB in the beginning and 161.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.13 ms. Allocated memory is still 206.0 MB. Free memory was 161.6 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.15 ms. Allocated memory is still 206.0 MB. Free memory was 160.2 MB in the beginning and 138.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4239.74 ms. Allocated memory was 206.0 MB in the beginning and 277.9 MB in the end (delta: 71.8 MB). Free memory was 137.6 MB in the beginning and 240.1 MB in the end (delta: -102.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 637 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 193 SDtfs, 160 SDslu, 286 SDs, 0 SdLazy, 107 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...