/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:43:01,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:43:01,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:43:01,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:43:01,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:43:01,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:43:01,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:43:01,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:43:01,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:43:01,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:43:01,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:43:01,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:43:01,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:43:01,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:43:01,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:43:01,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:43:01,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:43:01,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:43:01,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:43:01,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:43:01,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:43:01,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:43:01,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:43:01,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:43:01,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:43:01,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:43:01,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:43:01,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:43:01,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:43:01,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:43:01,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:43:01,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:43:01,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:43:01,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:43:01,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:43:01,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:43:01,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:43:01,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:43:01,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:43:01,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:43:01,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:43:01,542 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:43:01,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:43:01,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:43:01,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:43:01,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:43:01,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:43:01,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:43:01,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:43:01,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:43:01,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:43:01,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:43:01,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:43:01,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:43:01,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:43:01,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:43:01,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:43:01,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:43:01,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:01,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:43:01,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:43:01,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:43:01,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:43:01,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:43:01,548 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:43:01,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:43:01,548 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:43:01,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:43:01,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:43:01,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:43:01,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:43:01,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:43:01,934 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:43:01,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-01-20 14:43:02,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343f4b755/eb9ebd948904468ab183dedc536dbc66/FLAG9ea7aa091 [2021-01-20 14:43:02,814 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:43:02,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-01-20 14:43:02,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343f4b755/eb9ebd948904468ab183dedc536dbc66/FLAG9ea7aa091 [2021-01-20 14:43:03,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343f4b755/eb9ebd948904468ab183dedc536dbc66 [2021-01-20 14:43:03,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:43:03,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:43:03,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:03,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:43:03,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:43:03,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133967cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03, skipping insertion in model container [2021-01-20 14:43:03,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:43:03,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:43:03,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:03,511 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:43:03,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:03,729 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:43:03,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03 WrapperNode [2021-01-20 14:43:03,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:03,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:03,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:43:03,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:43:03,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:03,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:43:03,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:43:03,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:43:03,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (1/1) ... [2021-01-20 14:43:03,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:43:03,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:43:03,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:43:03,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:43:03,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (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 [2021-01-20 14:43:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:43:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:43:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:43:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:43:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:43:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:43:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:43:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:43:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:43:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:43:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:43:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:43:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:43:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:43:03,941 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:43:04,409 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:43:04,409 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:43:04,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:04 BoogieIcfgContainer [2021-01-20 14:43:04,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:43:04,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:43:04,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:43:04,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:43:04,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:43:03" (1/3) ... [2021-01-20 14:43:04,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2572ee89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:04, skipping insertion in model container [2021-01-20 14:43:04,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:03" (2/3) ... [2021-01-20 14:43:04,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2572ee89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:04, skipping insertion in model container [2021-01-20 14:43:04,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:04" (3/3) ... [2021-01-20 14:43:04,421 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-01-20 14:43:04,436 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:43:04,436 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:43:04,440 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:43:04,441 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:43:04,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,485 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:04,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:43:04,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:43:04,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:43:04,548 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:43:04,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:43:04,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:43:04,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:43:04,549 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:43:04,549 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:43:04,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:43:04,561 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 14:43:05,406 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 14:43:05,503 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:05,504 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:05,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash 407701414, now seen corresponding path program 1 times [2021-01-20 14:43:05,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:05,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960513347] [2021-01-20 14:43:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:06,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960513347] [2021-01-20 14:43:06,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:06,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:06,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078186173] [2021-01-20 14:43:06,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:06,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:06,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:06,132 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:06,802 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-20 14:43:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-01-20 14:43:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:06,881 INFO L225 Difference]: With dead ends: 12200 [2021-01-20 14:43:06,881 INFO L226 Difference]: Without dead ends: 4605 [2021-01-20 14:43:06,884 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:06,885 INFO L78 Accepts]: Start accepts. Automaton has 4605 states. Word has length 42 [2021-01-20 14:43:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:06,886 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states. [2021-01-20 14:43:06,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states. [2021-01-20 14:43:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:43:06,908 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:06,909 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:06,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:43:06,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:06,916 INFO L82 PathProgramCache]: Analyzing trace with hash 410392453, now seen corresponding path program 1 times [2021-01-20 14:43:06,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:06,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138051183] [2021-01-20 14:43:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:07,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138051183] [2021-01-20 14:43:07,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:07,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:07,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306248519] [2021-01-20 14:43:07,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:07,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:07,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:07,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:07,159 INFO L87 Difference]: Start difference. First operand 4605 states. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:07,442 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-01-20 14:43:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:07,593 INFO L93 Difference]: Finished difference Result 5473 states and 18505 transitions. [2021-01-20 14:43:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:07,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 14:43:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:07,640 INFO L225 Difference]: With dead ends: 5473 [2021-01-20 14:43:07,641 INFO L226 Difference]: Without dead ends: 4493 [2021-01-20 14:43:07,642 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:07,642 INFO L78 Accepts]: Start accepts. Automaton has 4493 states. Word has length 44 [2021-01-20 14:43:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:07,642 INFO L481 AbstractCegarLoop]: Abstraction has 4493 states. [2021-01-20 14:43:07,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states. [2021-01-20 14:43:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:43:07,655 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:07,655 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:07,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:43:07,656 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:07,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1509155095, now seen corresponding path program 1 times [2021-01-20 14:43:07,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:07,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094359979] [2021-01-20 14:43:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094359979] [2021-01-20 14:43:07,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:07,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367128874] [2021-01-20 14:43:07,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:07,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:07,818 INFO L87 Difference]: Start difference. First operand 4493 states. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:08,164 INFO L93 Difference]: Finished difference Result 5605 states and 18839 transitions. [2021-01-20 14:43:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:43:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:43:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:08,193 INFO L225 Difference]: With dead ends: 5605 [2021-01-20 14:43:08,193 INFO L226 Difference]: Without dead ends: 2966 [2021-01-20 14:43:08,194 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:43:08,194 INFO L78 Accepts]: Start accepts. Automaton has 2966 states. Word has length 45 [2021-01-20 14:43:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:08,195 INFO L481 AbstractCegarLoop]: Abstraction has 2966 states. [2021-01-20 14:43:08,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states. [2021-01-20 14:43:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:43:08,204 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:08,204 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:08,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:43:08,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash 977887402, now seen corresponding path program 1 times [2021-01-20 14:43:08,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:08,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969347242] [2021-01-20 14:43:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:08,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969347242] [2021-01-20 14:43:08,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:08,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:08,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412176038] [2021-01-20 14:43:08,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:08,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:08,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:08,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:08,430 INFO L87 Difference]: Start difference. First operand 2966 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:08,694 INFO L93 Difference]: Finished difference Result 4678 states and 15066 transitions. [2021-01-20 14:43:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:43:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:08,722 INFO L225 Difference]: With dead ends: 4678 [2021-01-20 14:43:08,723 INFO L226 Difference]: Without dead ends: 3350 [2021-01-20 14:43:08,723 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:08,723 INFO L78 Accepts]: Start accepts. Automaton has 3350 states. Word has length 48 [2021-01-20 14:43:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:08,724 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states. [2021-01-20 14:43:08,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states. [2021-01-20 14:43:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:43:08,733 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:08,734 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:08,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:43:08,734 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:08,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1662232019, now seen corresponding path program 1 times [2021-01-20 14:43:08,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:08,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091494117] [2021-01-20 14:43:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:08,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091494117] [2021-01-20 14:43:08,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:08,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:08,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11463508] [2021-01-20 14:43:08,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:08,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:08,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:08,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:08,914 INFO L87 Difference]: Start difference. First operand 3350 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:09,138 INFO L93 Difference]: Finished difference Result 4006 states and 12590 transitions. [2021-01-20 14:43:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:43:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:09,153 INFO L225 Difference]: With dead ends: 4006 [2021-01-20 14:43:09,153 INFO L226 Difference]: Without dead ends: 3054 [2021-01-20 14:43:09,154 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:09,154 INFO L78 Accepts]: Start accepts. Automaton has 3054 states. Word has length 49 [2021-01-20 14:43:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:09,155 INFO L481 AbstractCegarLoop]: Abstraction has 3054 states. [2021-01-20 14:43:09,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states. [2021-01-20 14:43:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:43:09,164 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:09,165 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:09,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:43:09,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash -803137758, now seen corresponding path program 1 times [2021-01-20 14:43:09,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:09,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733067839] [2021-01-20 14:43:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:09,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733067839] [2021-01-20 14:43:09,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:09,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:09,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52699551] [2021-01-20 14:43:09,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:09,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:09,303 INFO L87 Difference]: Start difference. First operand 3054 states. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:09,513 INFO L93 Difference]: Finished difference Result 2916 states and 8884 transitions. [2021-01-20 14:43:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:43:09,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 14:43:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:09,524 INFO L225 Difference]: With dead ends: 2916 [2021-01-20 14:43:09,524 INFO L226 Difference]: Without dead ends: 2124 [2021-01-20 14:43:09,525 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:43:09,525 INFO L78 Accepts]: Start accepts. Automaton has 2124 states. Word has length 50 [2021-01-20 14:43:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:09,526 INFO L481 AbstractCegarLoop]: Abstraction has 2124 states. [2021-01-20 14:43:09,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states. [2021-01-20 14:43:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:43:09,534 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:09,534 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:09,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:43:09,534 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -127783167, now seen corresponding path program 1 times [2021-01-20 14:43:09,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:09,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028707401] [2021-01-20 14:43:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:09,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028707401] [2021-01-20 14:43:09,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:09,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:43:09,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433586877] [2021-01-20 14:43:09,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:43:09,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:09,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:43:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:43:09,697 INFO L87 Difference]: Start difference. First operand 2124 states. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:09,962 INFO L93 Difference]: Finished difference Result 1503 states and 4360 transitions. [2021-01-20 14:43:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:43:09,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 14:43:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:09,966 INFO L225 Difference]: With dead ends: 1503 [2021-01-20 14:43:09,966 INFO L226 Difference]: Without dead ends: 731 [2021-01-20 14:43:09,966 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:43:09,966 INFO L78 Accepts]: Start accepts. Automaton has 731 states. Word has length 52 [2021-01-20 14:43:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:09,967 INFO L481 AbstractCegarLoop]: Abstraction has 731 states. [2021-01-20 14:43:09,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-01-20 14:43:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:43:09,970 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:09,970 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:09,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:43:09,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash -293180094, now seen corresponding path program 1 times [2021-01-20 14:43:09,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:09,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043812773] [2021-01-20 14:43:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:10,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043812773] [2021-01-20 14:43:10,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:10,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:10,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896193398] [2021-01-20 14:43:10,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:10,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:10,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:10,071 INFO L87 Difference]: Start difference. First operand 731 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:10,168 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2021-01-20 14:43:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:43:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 14:43:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:10,169 INFO L225 Difference]: With dead ends: 623 [2021-01-20 14:43:10,169 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:43:10,169 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:10,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-20 14:43:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:10,170 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:43:10,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:43:10,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:43:10,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:43:10,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:43:10 BasicIcfg [2021-01-20 14:43:10,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:43:10,177 INFO L168 Benchmark]: Toolchain (without parser) took 7121.04 ms. Allocated memory was 302.0 MB in the beginning and 639.6 MB in the end (delta: 337.6 MB). Free memory was 277.0 MB in the beginning and 484.5 MB in the end (delta: -207.6 MB). Peak memory consumption was 132.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,178 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.7 MB in the end (delta: 83.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:43:10,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.54 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 245.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 302.0 MB. Free memory was 245.9 MB in the beginning and 244.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,180 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,181 INFO L168 Benchmark]: RCFGBuilder took 576.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.7 MB in the beginning and 262.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,182 INFO L168 Benchmark]: TraceAbstraction took 5762.76 ms. Allocated memory was 302.0 MB in the beginning and 639.6 MB in the end (delta: 337.6 MB). Free memory was 261.5 MB in the beginning and 484.5 MB in the end (delta: -223.1 MB). Peak memory consumption was 117.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:10,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.7 MB in the end (delta: 83.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 672.54 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 245.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 302.0 MB. Free memory was 245.9 MB in the beginning and 244.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * RCFGBuilder took 576.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.7 MB in the beginning and 262.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5762.76 ms. Allocated memory was 302.0 MB in the beginning and 639.6 MB in the end (delta: 337.6 MB). Free memory was 261.5 MB in the beginning and 484.5 MB in the end (delta: -223.1 MB). Peak memory consumption was 117.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 770 SDtfs, 1093 SDslu, 2476 SDs, 0 SdLazy, 284 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 46638 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...