/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/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:38:42,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:38:42,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:38:42,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:38:42,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:38:42,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:38:42,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:38:42,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:38:42,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:38:42,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:38:42,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:38:42,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:38:42,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:38:42,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:38:42,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:38:42,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:38:42,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:38:42,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:38:42,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:38:42,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:38:42,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:38:42,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:38:42,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:38:42,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:38:42,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:38:42,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:38:42,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:38:42,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:38:42,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:38:42,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:38:42,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:38:42,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:38:42,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:38:42,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:38:42,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:38:42,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:38:42,626 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 15:38:42,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:38:42,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:38:42,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:38:42,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:38:42,682 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:38:42,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:38:42,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:38:42,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:38:42,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:38:42,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:38:42,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:38:42,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:38:42,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:38:42,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:38:42,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:38:42,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:38:42,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:38:42,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:38:42,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:38:42,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:38:42,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:38:42,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:38:42,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:38:42,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:38:42,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:38:42,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:38:42,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:38:42,689 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:38:42,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:38:42,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:38:42,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:38:43,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:38:43,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:38:43,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:38:43,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:38:43,134 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:38:43,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-09 15:38:43,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219fb2d22/e7b6d66fb4dc4cdb88b991a222fe1684/FLAGb4e895c3c [2020-11-09 15:38:43,965 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:38:43,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-09 15:38:43,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219fb2d22/e7b6d66fb4dc4cdb88b991a222fe1684/FLAGb4e895c3c [2020-11-09 15:38:44,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219fb2d22/e7b6d66fb4dc4cdb88b991a222fe1684 [2020-11-09 15:38:44,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:38:44,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:38:44,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:38:44,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:38:44,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:38:44,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:38:44" (1/1) ... [2020-11-09 15:38:44,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ae7806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:44, skipping insertion in model container [2020-11-09 15:38:44,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:38:44" (1/1) ... [2020-11-09 15:38:44,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:38:44,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:38:44,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:38:44,795 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:38:44,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:38:45,036 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:38:45,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45 WrapperNode [2020-11-09 15:38:45,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:38:45,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:38:45,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:38:45,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:38:45,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:38:45,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:38:45,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:38:45,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:38:45,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (1/1) ... [2020-11-09 15:38:45,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:38:45,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:38:45,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:38:45,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:38:45,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (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 15:38:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:38:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:38:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:38:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:38:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:38:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:38:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:38:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:38:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:38:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:38:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:38:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:38:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:38:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:38:45,234 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 15:38:45,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:38:45,969 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:38:45,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:38:45 BoogieIcfgContainer [2020-11-09 15:38:45,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:38:45,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:38:45,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:38:45,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:38:45,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:38:44" (1/3) ... [2020-11-09 15:38:45,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da38e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:38:45, skipping insertion in model container [2020-11-09 15:38:45,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:38:45" (2/3) ... [2020-11-09 15:38:45,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da38e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:38:45, skipping insertion in model container [2020-11-09 15:38:45,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:38:45" (3/3) ... [2020-11-09 15:38:45,981 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-11-09 15:38:45,998 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:38:45,998 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:38:46,003 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:38:46,004 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:38:46,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,047 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,047 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,050 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,050 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:38:46,068 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:38:46,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:38:46,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:38:46,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:38:46,105 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:38:46,105 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:38:46,105 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:38:46,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:38:46,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:38:46,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:38:46,119 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:38:46,120 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-09 15:38:46,123 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-09 15:38:46,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-11-09 15:38:46,175 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-11-09 15:38:46,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:38:46,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 15:38:46,183 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 15:38:48,135 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-09 15:38:48,289 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-09 15:38:49,340 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:38:49,640 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:38:49,751 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 15:38:49,797 INFO L131 LiptonReduction]: Checked pairs total: 2406 [2020-11-09 15:38:49,797 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 15:38:49,804 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:38:49,828 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-09 15:38:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-09 15:38:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:38:49,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:49,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:49,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-11-09 15:38:49,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:49,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588118137] [2020-11-09 15:38:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:50,036 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 15:38:50,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588118137] [2020-11-09 15:38:50,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:50,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:50,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [752184446] [2020-11-09 15:38:50,040 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:50,043 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:50,056 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:38:50,056 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:50,061 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:50,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:38:50,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:50,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:38:50,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:38:50,080 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-09 15:38:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:50,100 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-09 15:38:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:38:50,102 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:38:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:50,121 INFO L225 Difference]: With dead ends: 274 [2020-11-09 15:38:50,121 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 15:38:50,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:38:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 15:38:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 15:38:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 15:38:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-09 15:38:50,219 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-09 15:38:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:50,220 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-09 15:38:50,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:38:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-09 15:38:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:38:50,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:50,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:50,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:38:50,222 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:50,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-11-09 15:38:50,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:50,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327093523] [2020-11-09 15:38:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:50,348 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 15:38:50,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327093523] [2020-11-09 15:38:50,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:50,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:50,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [374665197] [2020-11-09 15:38:50,350 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:50,351 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:50,352 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:38:50,353 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:50,353 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:50,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:50,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:50,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:50,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:50,359 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-09 15:38:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:50,398 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-11-09 15:38:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:38:50,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:38:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:50,402 INFO L225 Difference]: With dead ends: 250 [2020-11-09 15:38:50,402 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 15:38:50,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 15:38:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 15:38:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 15:38:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-11-09 15:38:50,419 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-11-09 15:38:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:50,419 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-11-09 15:38:50,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-11-09 15:38:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:38:50,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:50,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:50,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:38:50,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:50,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash 303350682, now seen corresponding path program 1 times [2020-11-09 15:38:50,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:50,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844733622] [2020-11-09 15:38:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:50,520 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 15:38:50,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844733622] [2020-11-09 15:38:50,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:50,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:50,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1811298165] [2020-11-09 15:38:50,523 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:50,524 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:50,529 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-11-09 15:38:50,530 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:50,544 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:50,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:50,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:50,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:50,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:50,547 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-11-09 15:38:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:50,617 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-11-09 15:38:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:38:50,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 15:38:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:50,621 INFO L225 Difference]: With dead ends: 232 [2020-11-09 15:38:50,621 INFO L226 Difference]: Without dead ends: 196 [2020-11-09 15:38:50,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-09 15:38:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-11-09 15:38:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-09 15:38:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-11-09 15:38:50,654 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-11-09 15:38:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:50,654 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-11-09 15:38:50,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-11-09 15:38:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:38:50,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:50,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:50,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:38:50,657 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:50,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:50,657 INFO L82 PathProgramCache]: Analyzing trace with hash 135657142, now seen corresponding path program 1 times [2020-11-09 15:38:50,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:50,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85141786] [2020-11-09 15:38:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:50,728 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 15:38:50,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85141786] [2020-11-09 15:38:50,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:50,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:38:50,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [183799662] [2020-11-09 15:38:50,730 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:50,731 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:50,733 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-11-09 15:38:50,733 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:50,816 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:50,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:38:50,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:50,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:38:50,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:50,818 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-11-09 15:38:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:50,868 INFO L93 Difference]: Finished difference Result 279 states and 742 transitions. [2020-11-09 15:38:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:38:50,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 15:38:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:50,872 INFO L225 Difference]: With dead ends: 279 [2020-11-09 15:38:50,872 INFO L226 Difference]: Without dead ends: 174 [2020-11-09 15:38:50,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:38:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-09 15:38:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-09 15:38:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-09 15:38:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 452 transitions. [2020-11-09 15:38:50,884 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 452 transitions. Word has length 11 [2020-11-09 15:38:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:50,886 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 452 transitions. [2020-11-09 15:38:50,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:38:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 452 transitions. [2020-11-09 15:38:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:38:50,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:50,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:50,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:38:50,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-11-09 15:38:50,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:50,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702911769] [2020-11-09 15:38:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:51,006 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 15:38:51,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702911769] [2020-11-09 15:38:51,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:38:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [861671926] [2020-11-09 15:38:51,010 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:51,012 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:51,018 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-11-09 15:38:51,018 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:51,034 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:51,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:38:51,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:51,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:38:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:51,037 INFO L87 Difference]: Start difference. First operand 174 states and 452 transitions. Second operand 5 states. [2020-11-09 15:38:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:51,112 INFO L93 Difference]: Finished difference Result 316 states and 773 transitions. [2020-11-09 15:38:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:38:51,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:38:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:51,114 INFO L225 Difference]: With dead ends: 316 [2020-11-09 15:38:51,114 INFO L226 Difference]: Without dead ends: 174 [2020-11-09 15:38:51,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:38:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-09 15:38:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 150. [2020-11-09 15:38:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-09 15:38:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-11-09 15:38:51,123 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-11-09 15:38:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:51,123 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-11-09 15:38:51,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:38:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-11-09 15:38:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:38:51,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:51,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:51,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:38:51,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:51,126 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 1 times [2020-11-09 15:38:51,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:51,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475270646] [2020-11-09 15:38:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:51,248 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 15:38:51,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475270646] [2020-11-09 15:38:51,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:51,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:38:51,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1031333138] [2020-11-09 15:38:51,249 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:51,251 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:51,254 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-11-09 15:38:51,255 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:51,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:51,342 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:51,365 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:51,391 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:51,428 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:51,509 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3924#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:38:51,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:38:51,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:38:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:51,512 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 5 states. [2020-11-09 15:38:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:51,625 INFO L93 Difference]: Finished difference Result 128 states and 264 transitions. [2020-11-09 15:38:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:38:51,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:38:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:51,628 INFO L225 Difference]: With dead ends: 128 [2020-11-09 15:38:51,629 INFO L226 Difference]: Without dead ends: 92 [2020-11-09 15:38:51,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:38:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-09 15:38:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-09 15:38:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-09 15:38:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-11-09 15:38:51,636 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 12 [2020-11-09 15:38:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:51,637 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-11-09 15:38:51,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:38:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-11-09 15:38:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:38:51,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:51,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:51,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:38:51,642 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-11-09 15:38:51,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:51,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215522380] [2020-11-09 15:38:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:51,731 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 15:38:51,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215522380] [2020-11-09 15:38:51,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:51,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:38:51,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [948531499] [2020-11-09 15:38:51,733 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:51,735 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:51,742 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-11-09 15:38:51,743 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:51,747 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:51,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:51,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:51,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:51,749 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-11-09 15:38:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:51,784 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-11-09 15:38:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:38:51,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 15:38:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:51,788 INFO L225 Difference]: With dead ends: 104 [2020-11-09 15:38:51,788 INFO L226 Difference]: Without dead ends: 70 [2020-11-09 15:38:51,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 15:38:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-09 15:38:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-11-09 15:38:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-09 15:38:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-11-09 15:38:51,793 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-11-09 15:38:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:51,793 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-11-09 15:38:51,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-11-09 15:38:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:38:51,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:51,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:51,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:38:51,795 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-11-09 15:38:51,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:51,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386533192] [2020-11-09 15:38:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:51,909 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 15:38:51,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386533192] [2020-11-09 15:38:51,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:51,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:38:51,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [727030389] [2020-11-09 15:38:51,913 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:51,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:51,923 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-11-09 15:38:51,923 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:51,940 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:52,083 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4494#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:38:52,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:38:52,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:52,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:38:52,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:38:52,084 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 7 states. [2020-11-09 15:38:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:52,120 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-11-09 15:38:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:38:52,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:38:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:52,121 INFO L225 Difference]: With dead ends: 58 [2020-11-09 15:38:52,121 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:38:52,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:38:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:38:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:38:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:38:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:38:52,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 15:38:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:52,122 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:38:52,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:38:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:38:52,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:38:52,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:38:52,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:38:52 BasicIcfg [2020-11-09 15:38:52,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:38:52,132 INFO L168 Benchmark]: Toolchain (without parser) took 7905.23 ms. Allocated memory was 160.4 MB in the beginning and 263.2 MB in the end (delta: 102.8 MB). Free memory was 133.9 MB in the beginning and 186.8 MB in the end (delta: -52.9 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,135 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:38:52,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.14 ms. Allocated memory is still 160.4 MB. Free memory was 133.3 MB in the beginning and 138.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.31 ms. Allocated memory is still 160.4 MB. Free memory was 138.8 MB in the beginning and 136.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,138 INFO L168 Benchmark]: Boogie Preprocessor took 37.93 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 135.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,140 INFO L168 Benchmark]: RCFGBuilder took 834.15 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 114.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,144 INFO L168 Benchmark]: TraceAbstraction took 6153.49 ms. Allocated memory was 160.4 MB in the beginning and 263.2 MB in the end (delta: 102.8 MB). Free memory was 113.6 MB in the beginning and 186.8 MB in the end (delta: -73.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:52,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 804.14 ms. Allocated memory is still 160.4 MB. Free memory was 133.3 MB in the beginning and 138.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.31 ms. Allocated memory is still 160.4 MB. Free memory was 138.8 MB in the beginning and 136.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.93 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 135.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 834.15 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 114.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6153.49 ms. Allocated memory was 160.4 MB in the beginning and 263.2 MB in the end (delta: 102.8 MB). Free memory was 113.6 MB in the beginning and 186.8 MB in the end (delta: -73.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 715 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 181 SDtfs, 151 SDslu, 287 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...