/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:34:04,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:34:04,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:34:04,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:34:04,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:34:04,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:34:04,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:34:04,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:34:04,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:34:04,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:34:04,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:34:04,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:34:04,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:34:04,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:34:04,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:34:04,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:34:04,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:34:04,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:34:04,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:34:04,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:34:04,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:34:04,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:34:04,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:34:04,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:34:04,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 00:34:04,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 00:34:04,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 00:34:04,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 00:34:04,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 00:34:04,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 00:34:04,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:34:04,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:34:04,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:34:04,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:34:04,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:34:04,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:34:04,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:34:04,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:34:04,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:34:04,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:34:04,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:34:04,558 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 [2020-10-22 00:34:04,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:34:04,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:34:04,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:34:04,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:34:04,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:34:04,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:34:04,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:34:04,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:34:04,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:34:04,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:34:04,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:34:04,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:34:04,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:34:04,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:34:04,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:34:04,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:34:04,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:34:04,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:34:04,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:34:04,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:34:04,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:34:04,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:34:04,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:34:04,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:34:04,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:34:04,587 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:34:04,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:34:04,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:34:04,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:34:04,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:34:04,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:34:04,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-10-22 00:34:04,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a4f1b7f/6e8091023bbe40f2a2cae6d06251c92d/FLAG33358a67b [2020-10-22 00:34:05,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:34:05,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-10-22 00:34:05,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a4f1b7f/6e8091023bbe40f2a2cae6d06251c92d/FLAG33358a67b [2020-10-22 00:34:05,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a4f1b7f/6e8091023bbe40f2a2cae6d06251c92d [2020-10-22 00:34:05,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:34:05,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:34:05,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:34:05,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:34:05,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:34:05,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:34:05" (1/1) ... [2020-10-22 00:34:05,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d83ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:05, skipping insertion in model container [2020-10-22 00:34:05,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:34:05" (1/1) ... [2020-10-22 00:34:05,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:34:05,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:34:06,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:34:06,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:34:06,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:34:06,462 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:34:06,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06 WrapperNode [2020-10-22 00:34:06,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:34:06,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:34:06,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:34:06,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:34:06,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:34:06,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:34:06,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:34:06,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:34:06,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (1/1) ... [2020-10-22 00:34:06,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:34:06,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:34:06,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:34:06,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:34:06,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (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 [2020-10-22 00:34:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:34:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:34:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:34:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:34:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:34:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:34:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:34:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:34:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:34:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:34:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:34:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:34:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:34:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:34:06,621 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:34:07,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:34:07,040 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:34:07,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:34:07 BoogieIcfgContainer [2020-10-22 00:34:07,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:34:07,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:34:07,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:34:07,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:34:07,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:34:05" (1/3) ... [2020-10-22 00:34:07,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db6b3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:34:07, skipping insertion in model container [2020-10-22 00:34:07,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:34:06" (2/3) ... [2020-10-22 00:34:07,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db6b3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:34:07, skipping insertion in model container [2020-10-22 00:34:07,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:34:07" (3/3) ... [2020-10-22 00:34:07,052 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-10-22 00:34:07,065 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:34:07,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:34:07,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:34:07,075 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:34:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,110 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,110 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:34:07,130 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:34:07,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:34:07,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:34:07,161 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:34:07,161 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:34:07,161 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:34:07,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:34:07,162 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:34:07,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:34:07,162 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:34:07,176 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:34:07,176 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-22 00:34:07,179 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-22 00:34:07,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-22 00:34:07,228 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-22 00:34:07,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:34:07,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-22 00:34:07,237 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-10-22 00:34:08,722 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-22 00:34:08,830 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-22 00:34:08,830 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-22 00:34:08,841 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 00:34:08,885 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-10-22 00:34:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-10-22 00:34:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:34:08,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:08,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:08,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-10-22 00:34:08,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:08,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658158199] [2020-10-22 00:34:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:09,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658158199] [2020-10-22 00:34:09,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:09,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:34:09,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1962209319] [2020-10-22 00:34:09,161 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:09,164 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:09,183 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:34:09,183 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:09,187 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:09,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 00:34:09,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 00:34:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 00:34:09,206 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-10-22 00:34:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:09,227 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 00:34:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 00:34:09,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 00:34:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:09,251 INFO L225 Difference]: With dead ends: 282 [2020-10-22 00:34:09,251 INFO L226 Difference]: Without dead ends: 234 [2020-10-22 00:34:09,253 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 [2020-10-22 00:34:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-22 00:34:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-22 00:34:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-22 00:34:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-10-22 00:34:09,350 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-10-22 00:34:09,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:09,351 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-10-22 00:34:09,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 00:34:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-10-22 00:34:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:34:09,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:09,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:09,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:34:09,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-10-22 00:34:09,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:09,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560425609] [2020-10-22 00:34:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560425609] [2020-10-22 00:34:09,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:09,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:34:09,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [172830702] [2020-10-22 00:34:09,460 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:09,460 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:09,464 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 00:34:09,466 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:09,467 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:09,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:34:09,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:09,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:34:09,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:34:09,470 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-10-22 00:34:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:09,501 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-10-22 00:34:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:34:09,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 00:34:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:09,504 INFO L225 Difference]: With dead ends: 180 [2020-10-22 00:34:09,504 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 00:34:09,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:34:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 00:34:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-22 00:34:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-22 00:34:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-10-22 00:34:09,529 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-10-22 00:34:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:09,530 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-10-22 00:34:09,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:34:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-10-22 00:34:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 00:34:09,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:09,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:09,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:34:09,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-10-22 00:34:09,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:09,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849967883] [2020-10-22 00:34:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:09,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849967883] [2020-10-22 00:34:09,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:09,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:34:09,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1567424480] [2020-10-22 00:34:09,635 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:09,636 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:09,638 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-22 00:34:09,638 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:09,639 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:34:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:34:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:34:09,640 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-10-22 00:34:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:09,667 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-10-22 00:34:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:34:09,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-22 00:34:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:09,669 INFO L225 Difference]: With dead ends: 117 [2020-10-22 00:34:09,669 INFO L226 Difference]: Without dead ends: 117 [2020-10-22 00:34:09,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:34:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-22 00:34:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-22 00:34:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-22 00:34:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-10-22 00:34:09,677 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-10-22 00:34:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:09,677 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-10-22 00:34:09,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:34:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-10-22 00:34:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 00:34:09,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:09,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:09,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:34:09,679 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:09,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-10-22 00:34:09,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:09,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844656775] [2020-10-22 00:34:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:09,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844656775] [2020-10-22 00:34:09,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:09,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:34:09,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1982761325] [2020-10-22 00:34:09,787 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:09,788 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:09,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-22 00:34:09,795 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:10,013 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:10,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:34:10,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:10,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:34:10,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:34:10,015 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-10-22 00:34:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:10,046 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-10-22 00:34:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:34:10,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 00:34:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:10,048 INFO L225 Difference]: With dead ends: 93 [2020-10-22 00:34:10,048 INFO L226 Difference]: Without dead ends: 93 [2020-10-22 00:34:10,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:34:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-22 00:34:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-22 00:34:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-22 00:34:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-10-22 00:34:10,054 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-10-22 00:34:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:10,054 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-10-22 00:34:10,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:34:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-10-22 00:34:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:34:10,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:10,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:10,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:34:10,057 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-10-22 00:34:10,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:10,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575728138] [2020-10-22 00:34:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:10,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575728138] [2020-10-22 00:34:10,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:10,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:34:10,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2001606133] [2020-10-22 00:34:10,153 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:10,155 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:10,162 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-10-22 00:34:10,162 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:10,411 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:10,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:34:10,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:34:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:34:10,412 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 5 states. [2020-10-22 00:34:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:10,451 INFO L93 Difference]: Finished difference Result 137 states and 290 transitions. [2020-10-22 00:34:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:34:10,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 00:34:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:10,453 INFO L225 Difference]: With dead ends: 137 [2020-10-22 00:34:10,453 INFO L226 Difference]: Without dead ends: 69 [2020-10-22 00:34:10,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:34:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-22 00:34:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-22 00:34:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-22 00:34:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-10-22 00:34:10,458 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 17 [2020-10-22 00:34:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:10,458 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-10-22 00:34:10,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:34:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-10-22 00:34:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:34:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:10,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:10,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:34:10,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1623757075, now seen corresponding path program 2 times [2020-10-22 00:34:10,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:10,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141988219] [2020-10-22 00:34:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:10,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141988219] [2020-10-22 00:34:10,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:10,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:34:10,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1357566699] [2020-10-22 00:34:10,517 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:10,519 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:10,523 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 36 transitions. [2020-10-22 00:34:10,524 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:10,549 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:10,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:34:10,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:10,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:34:10,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:34:10,550 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-10-22 00:34:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:10,571 INFO L93 Difference]: Finished difference Result 87 states and 167 transitions. [2020-10-22 00:34:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:34:10,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 00:34:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:10,573 INFO L225 Difference]: With dead ends: 87 [2020-10-22 00:34:10,573 INFO L226 Difference]: Without dead ends: 53 [2020-10-22 00:34:10,574 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 [2020-10-22 00:34:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-22 00:34:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-22 00:34:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-22 00:34:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-22 00:34:10,577 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-10-22 00:34:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:10,578 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-22 00:34:10,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:34:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-22 00:34:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:34:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:10,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:10,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:34:10,579 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-10-22 00:34:10,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:10,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917312333] [2020-10-22 00:34:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:10,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917312333] [2020-10-22 00:34:10,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:10,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:34:10,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [354493890] [2020-10-22 00:34:10,668 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:10,670 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:10,677 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 69 transitions. [2020-10-22 00:34:10,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:10,956 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:10,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:34:10,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:34:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:34:10,958 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-10-22 00:34:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:10,997 INFO L93 Difference]: Finished difference Result 67 states and 121 transitions. [2020-10-22 00:34:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:34:10,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 00:34:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:10,998 INFO L225 Difference]: With dead ends: 67 [2020-10-22 00:34:10,998 INFO L226 Difference]: Without dead ends: 35 [2020-10-22 00:34:10,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:34:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-22 00:34:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-22 00:34:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-22 00:34:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2020-10-22 00:34:11,003 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 17 [2020-10-22 00:34:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:11,010 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2020-10-22 00:34:11,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:34:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2020-10-22 00:34:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:34:11,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:34:11,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:34:11,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:34:11,014 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:34:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:34:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -152781209, now seen corresponding path program 4 times [2020-10-22 00:34:11,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:34:11,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529394690] [2020-10-22 00:34:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:34:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:34:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:34:11,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529394690] [2020-10-22 00:34:11,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:34:11,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:34:11,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990239186] [2020-10-22 00:34:11,108 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:34:11,110 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:34:11,116 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 42 transitions. [2020-10-22 00:34:11,116 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:34:11,196 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:34:11,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:34:11,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:34:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:34:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:34:11,198 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand 5 states. [2020-10-22 00:34:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:34:11,221 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2020-10-22 00:34:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:34:11,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 00:34:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:34:11,222 INFO L225 Difference]: With dead ends: 34 [2020-10-22 00:34:11,223 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:34:11,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:34:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:34:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:34:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:34:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:34:11,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 00:34:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:34:11,225 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:34:11,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:34:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:34:11,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:34:11,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:34:11,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:34:11 BasicIcfg [2020-10-22 00:34:11,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:34:11,232 INFO L168 Benchmark]: Toolchain (without parser) took 5506.00 ms. Allocated memory was 141.0 MB in the beginning and 281.0 MB in the end (delta: 140.0 MB). Free memory was 102.7 MB in the beginning and 197.2 MB in the end (delta: -94.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,233 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.38 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 159.9 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.63 ms. Allocated memory is still 205.5 MB. Free memory was 159.9 MB in the beginning and 157.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,236 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 ms. Allocated memory is still 205.5 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,237 INFO L168 Benchmark]: RCFGBuilder took 497.04 ms. Allocated memory is still 205.5 MB. Free memory was 155.9 MB in the beginning and 132.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,238 INFO L168 Benchmark]: TraceAbstraction took 4185.33 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 131.5 MB in the beginning and 197.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-22 00:34:11,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.38 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 159.9 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.63 ms. Allocated memory is still 205.5 MB. Free memory was 159.9 MB in the beginning and 157.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.15 ms. Allocated memory is still 205.5 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.04 ms. Allocated memory is still 205.5 MB. Free memory was 155.9 MB in the beginning and 132.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4185.33 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 131.5 MB in the beginning and 197.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 707 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2462 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 130 SDtfs, 74 SDslu, 184 SDs, 0 SdLazy, 71 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3452 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...