/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:37:12,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:37:12,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:37:12,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:37:12,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:37:12,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:37:12,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:37:12,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:37:12,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:37:12,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:37:12,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:37:12,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:37:12,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:37:12,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:37:12,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:37:12,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:37:12,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:37:12,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:37:12,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:37:12,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:37:12,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:37:12,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:37:12,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:37:12,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:37:12,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 15:37:12,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 15:37:12,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 15:37:12,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 15:37:12,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 15:37:12,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 15:37:12,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:37:12,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:37:12,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:37:12,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:37:12,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:37:12,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:37:12,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:37:12,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:37:12,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:37:12,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:37:12,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:37:12,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:37:12,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:37:12,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:37:12,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:37:12,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:37:12,678 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:37:12,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:37:12,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:37:12,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:37:12,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:37:12,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:37:12,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:37:12,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:37:12,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:37:12,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:37:12,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:37:12,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:37:12,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:37:12,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:37:12,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:37:12,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:37:12,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:37:12,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:12,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:37:12,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:37:12,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:37:12,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:37:12,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:37:12,686 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:37:12,687 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:37:12,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:37:12,688 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:37:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:37:13,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:37:13,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:37:13,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:37:13,201 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:37:13,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-11-09 15:37:13,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd729d0/45ea6531c354488eae01fb5d1aac01f8/FLAG9dba9819c [2020-11-09 15:37:13,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:37:13,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-11-09 15:37:14,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd729d0/45ea6531c354488eae01fb5d1aac01f8/FLAG9dba9819c [2020-11-09 15:37:14,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd729d0/45ea6531c354488eae01fb5d1aac01f8 [2020-11-09 15:37:14,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:37:14,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:37:14,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:14,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:37:14,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:37:14,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:14,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14, skipping insertion in model container [2020-11-09 15:37:14,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:14,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:37:14,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:37:14,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:14,821 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:37:14,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:14,997 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:37:14,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14 WrapperNode [2020-11-09 15:37:14,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:15,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:15,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:37:15,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:37:15,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:15,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:37:15,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:37:15,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:37:15,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... [2020-11-09 15:37:15,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:37:15,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:37:15,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:37:15,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:37:15,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-09 15:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:37:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:37:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:37:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:37:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:37:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:37:15,287 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:37:15,977 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:37:15,978 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:37:15,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:15 BoogieIcfgContainer [2020-11-09 15:37:15,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:37:15,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:37:15,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:37:15,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:37:15,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:37:14" (1/3) ... [2020-11-09 15:37:15,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3093857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:15, skipping insertion in model container [2020-11-09 15:37:15,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:14" (2/3) ... [2020-11-09 15:37:15,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3093857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:15, skipping insertion in model container [2020-11-09 15:37:15,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:15" (3/3) ... [2020-11-09 15:37:15,997 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-11-09 15:37:16,018 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:37:16,019 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:37:16,024 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:37:16,025 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:37:16,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,087 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,087 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,096 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,098 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,099 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,111 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:16,134 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:37:16,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:37:16,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:37:16,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:37:16,188 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:37:16,188 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:37:16,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:37:16,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:37:16,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:37:16,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:37:16,204 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:37:16,205 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:16,208 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:16,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:16,256 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 15:37:16,256 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:37:16,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:37:16,264 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:37:19,542 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-11-09 15:37:19,856 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-09 15:37:20,030 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-09 15:37:20,193 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:37:20,413 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:37:20,757 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:37:20,865 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:37:21,100 WARN L194 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:37:21,206 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-09 15:37:21,206 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 15:37:21,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:37:21,257 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:37:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:37:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:37:21,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:21,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:21,269 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-09 15:37:21,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:21,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379361289] [2020-11-09 15:37:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:21,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379361289] [2020-11-09 15:37:21,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:21,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:21,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [951303333] [2020-11-09 15:37:21,573 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:21,578 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:21,595 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:37:21,596 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:21,605 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:21,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:21,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:21,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:21,622 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:37:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:21,667 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 15:37:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:21,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:37:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:21,686 INFO L225 Difference]: With dead ends: 282 [2020-11-09 15:37:21,686 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 15:37:21,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 15:37:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 15:37:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 15:37:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 15:37:21,784 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 15:37:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:21,785 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 15:37:21,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 15:37:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:37:21,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:21,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:21,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:37:21,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:21,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-09 15:37:21,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:21,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116408390] [2020-11-09 15:37:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:21,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116408390] [2020-11-09 15:37:21,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:21,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:21,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2007781807] [2020-11-09 15:37:21,910 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:21,911 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:21,916 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 15:37:21,916 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:21,940 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:21,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:21,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:21,944 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-09 15:37:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:21,973 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-09 15:37:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:21,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:37:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:21,984 INFO L225 Difference]: With dead ends: 202 [2020-11-09 15:37:21,984 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 15:37:21,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 15:37:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 15:37:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 15:37:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-09 15:37:22,025 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-09 15:37:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:22,025 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-09 15:37:22,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-09 15:37:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:37:22,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:22,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:22,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:37:22,030 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-09 15:37:22,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:22,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331309933] [2020-11-09 15:37:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:22,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331309933] [2020-11-09 15:37:22,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:22,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:22,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [405249500] [2020-11-09 15:37:22,131 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:22,132 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:22,137 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-11-09 15:37:22,138 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:22,187 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:22,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:22,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,189 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-09 15:37:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:22,196 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-09 15:37:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:22,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:37:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:22,199 INFO L225 Difference]: With dead ends: 194 [2020-11-09 15:37:22,199 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 15:37:22,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 15:37:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 15:37:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 15:37:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-09 15:37:22,216 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-09 15:37:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:22,217 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-09 15:37:22,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-09 15:37:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:37:22,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:22,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:22,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:37:22,219 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:22,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1592271914, now seen corresponding path program 1 times [2020-11-09 15:37:22,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:22,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629450225] [2020-11-09 15:37:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:22,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629450225] [2020-11-09 15:37:22,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:22,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:22,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1669568117] [2020-11-09 15:37:22,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:22,277 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:22,280 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-11-09 15:37:22,280 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:22,290 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:22,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:22,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:22,292 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-09 15:37:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:22,330 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-11-09 15:37:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:37:22,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:37:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:22,334 INFO L225 Difference]: With dead ends: 266 [2020-11-09 15:37:22,334 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 15:37:22,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 15:37:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 15:37:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 15:37:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 510 transitions. [2020-11-09 15:37:22,345 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 510 transitions. Word has length 11 [2020-11-09 15:37:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:22,345 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 510 transitions. [2020-11-09 15:37:22,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 510 transitions. [2020-11-09 15:37:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:37:22,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:22,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:22,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:37:22,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:22,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 2 times [2020-11-09 15:37:22,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:22,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122260600] [2020-11-09 15:37:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:22,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122260600] [2020-11-09 15:37:22,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:22,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:22,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7162354] [2020-11-09 15:37:22,435 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:22,437 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:22,439 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:37:22,440 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:22,518 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:22,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:22,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:22,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,521 INFO L87 Difference]: Start difference. First operand 194 states and 510 transitions. Second operand 3 states. [2020-11-09 15:37:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:22,539 INFO L93 Difference]: Finished difference Result 192 states and 503 transitions. [2020-11-09 15:37:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:22,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 15:37:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:22,542 INFO L225 Difference]: With dead ends: 192 [2020-11-09 15:37:22,542 INFO L226 Difference]: Without dead ends: 192 [2020-11-09 15:37:22,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-09 15:37:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-09 15:37:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-09 15:37:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 503 transitions. [2020-11-09 15:37:22,554 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 503 transitions. Word has length 11 [2020-11-09 15:37:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:22,555 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 503 transitions. [2020-11-09 15:37:22,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 503 transitions. [2020-11-09 15:37:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:37:22,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:22,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:22,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:37:22,559 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-11-09 15:37:22,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:22,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639765664] [2020-11-09 15:37:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:22,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639765664] [2020-11-09 15:37:22,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:22,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:22,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1584344066] [2020-11-09 15:37:22,637 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:22,639 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:22,642 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-11-09 15:37:22,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:22,647 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:22,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:22,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,649 INFO L87 Difference]: Start difference. First operand 192 states and 503 transitions. Second operand 3 states. [2020-11-09 15:37:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:22,665 INFO L93 Difference]: Finished difference Result 248 states and 627 transitions. [2020-11-09 15:37:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:22,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 15:37:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:22,668 INFO L225 Difference]: With dead ends: 248 [2020-11-09 15:37:22,668 INFO L226 Difference]: Without dead ends: 200 [2020-11-09 15:37:22,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-09 15:37:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-09 15:37:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-09 15:37:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-09 15:37:22,677 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-09 15:37:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:22,677 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-09 15:37:22,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-09 15:37:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:37:22,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:22,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:22,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:37:22,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-11-09 15:37:22,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:22,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357818643] [2020-11-09 15:37:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:22,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357818643] [2020-11-09 15:37:22,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:22,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:22,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [762212300] [2020-11-09 15:37:22,811 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:22,812 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:22,818 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 15:37:22,819 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:22,854 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:22,902 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:22,930 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:22,959 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:23,002 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:23,036 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:23,090 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:23,131 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4470#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:37:23,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:37:23,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:37:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:23,133 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 5 states. [2020-11-09 15:37:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,252 INFO L93 Difference]: Finished difference Result 186 states and 435 transitions. [2020-11-09 15:37:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:23,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:37:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,254 INFO L225 Difference]: With dead ends: 186 [2020-11-09 15:37:23,254 INFO L226 Difference]: Without dead ends: 122 [2020-11-09 15:37:23,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:37:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-09 15:37:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-09 15:37:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-09 15:37:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-09 15:37:23,262 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 12 [2020-11-09 15:37:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:23,262 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-09 15:37:23,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:37:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-09 15:37:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:37:23,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:23,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:23,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:37:23,264 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-09 15:37:23,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:23,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271791006] [2020-11-09 15:37:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:23,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271791006] [2020-11-09 15:37:23,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:23,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:37:23,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1879793808] [2020-11-09 15:37:23,398 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:23,400 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:23,406 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-11-09 15:37:23,407 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:23,426 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:23,519 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4912#(not (= ~__unbuffered_cnt~0 2)), 4913#(not (= ~__unbuffered_cnt~0 1)), 4914#(<= ~__unbuffered_cnt~0 0), 4911#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:37:23,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 15:37:23,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 15:37:23,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:37:23,521 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 10 states. [2020-11-09 15:37:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,586 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-09 15:37:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:23,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-09 15:37:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,587 INFO L225 Difference]: With dead ends: 118 [2020-11-09 15:37:23,587 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 15:37:23,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 15:37:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 15:37:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 15:37:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 15:37:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-09 15:37:23,590 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-09 15:37:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:23,591 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-09 15:37:23,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 15:37:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-09 15:37:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:23,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:23,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:23,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:37:23,592 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:23,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-09 15:37:23,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:23,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212291962] [2020-11-09 15:37:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:23,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212291962] [2020-11-09 15:37:23,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:23,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:23,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [643017967] [2020-11-09 15:37:23,639 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:23,641 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:23,651 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-11-09 15:37:23,651 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:23,687 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:23,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:23,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:23,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:23,689 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-09 15:37:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,710 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-09 15:37:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:23,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,711 INFO L225 Difference]: With dead ends: 63 [2020-11-09 15:37:23,711 INFO L226 Difference]: Without dead ends: 35 [2020-11-09 15:37:23,712 INFO L677 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 [2020-11-09 15:37:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-09 15:37:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-09 15:37:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-09 15:37:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-09 15:37:23,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-09 15:37:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:23,714 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-09 15:37:23,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-09 15:37:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:23,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:23,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:23,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:37:23,715 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-09 15:37:23,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:23,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281552528] [2020-11-09 15:37:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:23,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281552528] [2020-11-09 15:37:23,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:23,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:23,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [595058264] [2020-11-09 15:37:23,752 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:23,754 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:23,760 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 49 transitions. [2020-11-09 15:37:23,760 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:23,772 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:23,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:23,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:23,773 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-09 15:37:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,797 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-11-09 15:37:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:37:23,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,798 INFO L225 Difference]: With dead ends: 48 [2020-11-09 15:37:23,798 INFO L226 Difference]: Without dead ends: 30 [2020-11-09 15:37:23,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-09 15:37:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-09 15:37:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-09 15:37:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-09 15:37:23,801 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-09 15:37:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:23,801 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-09 15:37:23,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-09 15:37:23,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:23,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:23,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:23,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:37:23,802 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:23,803 INFO L82 PathProgramCache]: Analyzing trace with hash -766877882, now seen corresponding path program 3 times [2020-11-09 15:37:23,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:23,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047257838] [2020-11-09 15:37:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:23,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047257838] [2020-11-09 15:37:23,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:23,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:23,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1527961206] [2020-11-09 15:37:23,841 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:23,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:23,849 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-11-09 15:37:23,849 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:23,862 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:23,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:23,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:23,864 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-09 15:37:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,880 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-09 15:37:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:23,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,881 INFO L225 Difference]: With dead ends: 29 [2020-11-09 15:37:23,882 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:37:23,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:37:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:37:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:37:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:37:23,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 15:37:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:23,883 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:37:23,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:37:23,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:37:23,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 15:37:23,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:37:23 BasicIcfg [2020-11-09 15:37:23,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:37:23,890 INFO L168 Benchmark]: Toolchain (without parser) took 9613.85 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 127.6 MB in the beginning and 109.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,890 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 126.1 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:37:23,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 130.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.83 ms. Allocated memory is still 153.1 MB. Free memory was 129.5 MB in the beginning and 127.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,893 INFO L168 Benchmark]: Boogie Preprocessor took 64.96 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 125.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,894 INFO L168 Benchmark]: RCFGBuilder took 811.13 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 103.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,894 INFO L168 Benchmark]: TraceAbstraction took 7899.43 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 103.3 MB in the beginning and 109.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:23,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 126.1 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 715.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 130.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 106.83 ms. Allocated memory is still 153.1 MB. Free memory was 129.5 MB in the beginning and 127.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.96 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 125.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 811.13 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 103.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7899.43 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 103.3 MB in the beginning and 109.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 223 SDtfs, 144 SDslu, 241 SDs, 0 SdLazy, 129 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 4100 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...