/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.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:27:18,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:27:18,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:27:18,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:27:18,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:27:18,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:27:18,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:27:18,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:27:18,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:27:18,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:27:18,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:27:18,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:27:18,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:27:18,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:27:18,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:27:18,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:27:18,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:27:18,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:27:18,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:27:18,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:27:18,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:27:18,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:27:18,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:27:18,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:27:18,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:27:18,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:27:18,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:27:18,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:27:18,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:27:18,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:27:18,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:27:18,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:27:18,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:27:18,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:27:18,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:27:18,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:27:18,651 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 [2021-01-26 17:27:18,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:27:18,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:27:18,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:27:18,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:27:18,722 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:27:18,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:27:18,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:27:18,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:27:18,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:27:18,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:27:18,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:27:18,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:27:18,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:27:18,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:27:18,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:27:18,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:27:18,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:27:18,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:27:18,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:27:18,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:27:18,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:27:18,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:27:18,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:27:18,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:27:18,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:27:18,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:27:18,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:27:18,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:27:18,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:27:18,730 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:27:18,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:27:19,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:27:19,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:27:19,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:27:19,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:27:19,199 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:27:19,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-01-26 17:27:19,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1d453f2/d939e2d1d6e343bb9fb2a78b533cb3a6/FLAGd06bf9873 [2021-01-26 17:27:20,113 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:27:20,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-01-26 17:27:20,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1d453f2/d939e2d1d6e343bb9fb2a78b533cb3a6/FLAGd06bf9873 [2021-01-26 17:27:20,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1d453f2/d939e2d1d6e343bb9fb2a78b533cb3a6 [2021-01-26 17:27:20,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:27:20,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:27:20,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:20,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:27:20,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:27:20,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:20" (1/1) ... [2021-01-26 17:27:20,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1082fff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:20, skipping insertion in model container [2021-01-26 17:27:20,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:20" (1/1) ... [2021-01-26 17:27:20,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:27:20,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:27:20,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:20,864 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:27:20,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:21,054 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:27:21,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21 WrapperNode [2021-01-26 17:27:21,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:21,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:21,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:27:21,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:27:21,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:21,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:27:21,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:27:21,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:27:21,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (1/1) ... [2021-01-26 17:27:21,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:27:21,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:27:21,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:27:21,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:27:21,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (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 [2021-01-26 17:27:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:27:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:27:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:27:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:27:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:27:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:27:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:27:21,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:27:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:27:21,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:27:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:27:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:27:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:27:21,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:27:21,300 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:27:21,921 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:27:21,921 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:27:21,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:21 BoogieIcfgContainer [2021-01-26 17:27:21,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:27:21,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:27:21,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:27:21,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:27:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:27:20" (1/3) ... [2021-01-26 17:27:21,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff3b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:21, skipping insertion in model container [2021-01-26 17:27:21,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:21" (2/3) ... [2021-01-26 17:27:21,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff3b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:21, skipping insertion in model container [2021-01-26 17:27:21,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:21" (3/3) ... [2021-01-26 17:27:21,937 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2021-01-26 17:27:21,955 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:27:21,955 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:27:21,960 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:27:21,961 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:27:22,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,018 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,018 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,021 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,023 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,026 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,052 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,052 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:22,066 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:27:22,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:27:22,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:27:22,118 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:27:22,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:27:22,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:27:22,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:27:22,119 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:27:22,119 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:27:22,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:27:22,137 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-26 17:27:23,139 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) [2021-01-26 17:27:23,185 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) [2021-01-26 17:27:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-26 17:27:23,239 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:23,240 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] [2021-01-26 17:27:23,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 407701414, now seen corresponding path program 1 times [2021-01-26 17:27:23,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:23,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133783785] [2021-01-26 17:27:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:23,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133783785] [2021-01-26 17:27:23,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:23,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:23,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453811427] [2021-01-26 17:27:23,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:23,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:23,856 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) [2021-01-26 17:27:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:24,289 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-26 17:27:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:24,292 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 [2021-01-26 17:27:24,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:24,454 INFO L225 Difference]: With dead ends: 12200 [2021-01-26 17:27:24,454 INFO L226 Difference]: Without dead ends: 4605 [2021-01-26 17:27:24,456 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 [2021-01-26 17:27:24,456 INFO L78 Accepts]: Start accepts. Automaton has 4605 states. Word has length 42 [2021-01-26 17:27:24,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:24,459 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states. [2021-01-26 17:27:24,459 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) [2021-01-26 17:27:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states. [2021-01-26 17:27:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-26 17:27:24,475 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:24,475 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] [2021-01-26 17:27:24,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:27:24,476 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash 410392453, now seen corresponding path program 1 times [2021-01-26 17:27:24,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:24,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383305995] [2021-01-26 17:27:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:24,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383305995] [2021-01-26 17:27:24,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:24,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:24,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989956443] [2021-01-26 17:27:24,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:24,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:24,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:24,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:24,695 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) [2021-01-26 17:27:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:24,938 INFO L93 Difference]: Finished difference Result 5473 states and 18505 transitions. [2021-01-26 17:27:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:24,939 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 [2021-01-26 17:27:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:24,977 INFO L225 Difference]: With dead ends: 5473 [2021-01-26 17:27:24,978 INFO L226 Difference]: Without dead ends: 4493 [2021-01-26 17:27:24,979 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 [2021-01-26 17:27:24,979 INFO L78 Accepts]: Start accepts. Automaton has 4493 states. Word has length 44 [2021-01-26 17:27:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:24,979 INFO L481 AbstractCegarLoop]: Abstraction has 4493 states. [2021-01-26 17:27:24,980 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) [2021-01-26 17:27:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states. [2021-01-26 17:27:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:27:24,992 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:24,992 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] [2021-01-26 17:27:24,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:27:24,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1509155095, now seen corresponding path program 1 times [2021-01-26 17:27:24,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611124261] [2021-01-26 17:27:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:25,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611124261] [2021-01-26 17:27:25,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:25,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:25,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853820952] [2021-01-26 17:27:25,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:25,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:25,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:25,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:25,166 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) [2021-01-26 17:27:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:25,505 INFO L93 Difference]: Finished difference Result 5605 states and 18839 transitions. [2021-01-26 17:27:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:25,506 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 [2021-01-26 17:27:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:25,530 INFO L225 Difference]: With dead ends: 5605 [2021-01-26 17:27:25,531 INFO L226 Difference]: Without dead ends: 2966 [2021-01-26 17:27:25,531 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 [2021-01-26 17:27:25,531 INFO L78 Accepts]: Start accepts. Automaton has 2966 states. Word has length 45 [2021-01-26 17:27:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:25,532 INFO L481 AbstractCegarLoop]: Abstraction has 2966 states. [2021-01-26 17:27:25,532 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) [2021-01-26 17:27:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states. [2021-01-26 17:27:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:27:25,541 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:25,541 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] [2021-01-26 17:27:25,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:27:25,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash 977887402, now seen corresponding path program 1 times [2021-01-26 17:27:25,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:25,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015187015] [2021-01-26 17:27:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:25,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015187015] [2021-01-26 17:27:25,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:25,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:25,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342139970] [2021-01-26 17:27:25,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:25,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:25,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:25,769 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) [2021-01-26 17:27:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:26,018 INFO L93 Difference]: Finished difference Result 4678 states and 15066 transitions. [2021-01-26 17:27:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:26,019 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 [2021-01-26 17:27:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:26,114 INFO L225 Difference]: With dead ends: 4678 [2021-01-26 17:27:26,114 INFO L226 Difference]: Without dead ends: 3350 [2021-01-26 17:27:26,115 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 [2021-01-26 17:27:26,115 INFO L78 Accepts]: Start accepts. Automaton has 3350 states. Word has length 48 [2021-01-26 17:27:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:26,116 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states. [2021-01-26 17:27:26,116 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) [2021-01-26 17:27:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states. [2021-01-26 17:27:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-26 17:27:26,127 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:26,127 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] [2021-01-26 17:27:26,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:27:26,128 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1662232019, now seen corresponding path program 1 times [2021-01-26 17:27:26,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:26,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470977764] [2021-01-26 17:27:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:26,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470977764] [2021-01-26 17:27:26,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:26,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:26,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574784474] [2021-01-26 17:27:26,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:26,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:26,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:26,283 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) [2021-01-26 17:27:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:26,471 INFO L93 Difference]: Finished difference Result 4006 states and 12590 transitions. [2021-01-26 17:27:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:26,472 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 [2021-01-26 17:27:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:26,486 INFO L225 Difference]: With dead ends: 4006 [2021-01-26 17:27:26,487 INFO L226 Difference]: Without dead ends: 3054 [2021-01-26 17:27:26,487 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:26,487 INFO L78 Accepts]: Start accepts. Automaton has 3054 states. Word has length 49 [2021-01-26 17:27:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:26,488 INFO L481 AbstractCegarLoop]: Abstraction has 3054 states. [2021-01-26 17:27:26,488 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) [2021-01-26 17:27:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states. [2021-01-26 17:27:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:27:26,498 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:26,498 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] [2021-01-26 17:27:26,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:27:26,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:26,499 INFO L82 PathProgramCache]: Analyzing trace with hash -803137758, now seen corresponding path program 1 times [2021-01-26 17:27:26,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:26,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006405223] [2021-01-26 17:27:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:26,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006405223] [2021-01-26 17:27:26,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:26,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:26,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493773927] [2021-01-26 17:27:26,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:26,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:26,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:26,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:26,636 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) [2021-01-26 17:27:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:26,886 INFO L93 Difference]: Finished difference Result 2916 states and 8884 transitions. [2021-01-26 17:27:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:26,886 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 [2021-01-26 17:27:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:26,895 INFO L225 Difference]: With dead ends: 2916 [2021-01-26 17:27:26,895 INFO L226 Difference]: Without dead ends: 2124 [2021-01-26 17:27:26,896 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 [2021-01-26 17:27:26,896 INFO L78 Accepts]: Start accepts. Automaton has 2124 states. Word has length 50 [2021-01-26 17:27:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:26,897 INFO L481 AbstractCegarLoop]: Abstraction has 2124 states. [2021-01-26 17:27:26,897 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) [2021-01-26 17:27:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states. [2021-01-26 17:27:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:27:26,903 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:26,904 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] [2021-01-26 17:27:26,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:27:26,904 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash -127783167, now seen corresponding path program 1 times [2021-01-26 17:27:26,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:26,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962320283] [2021-01-26 17:27:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:27,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962320283] [2021-01-26 17:27:27,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:27,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:27:27,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585362588] [2021-01-26 17:27:27,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:27:27,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:27,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:27:27,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:27:27,108 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) [2021-01-26 17:27:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:27,319 INFO L93 Difference]: Finished difference Result 1503 states and 4360 transitions. [2021-01-26 17:27:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:27:27,320 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 [2021-01-26 17:27:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:27,324 INFO L225 Difference]: With dead ends: 1503 [2021-01-26 17:27:27,324 INFO L226 Difference]: Without dead ends: 731 [2021-01-26 17:27:27,324 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 [2021-01-26 17:27:27,325 INFO L78 Accepts]: Start accepts. Automaton has 731 states. Word has length 52 [2021-01-26 17:27:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:27,325 INFO L481 AbstractCegarLoop]: Abstraction has 731 states. [2021-01-26 17:27:27,325 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) [2021-01-26 17:27:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-01-26 17:27:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-26 17:27:27,328 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:27,328 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] [2021-01-26 17:27:27,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:27:27,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash -293180094, now seen corresponding path program 1 times [2021-01-26 17:27:27,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:27,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603991594] [2021-01-26 17:27:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:27,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603991594] [2021-01-26 17:27:27,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:27,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:27,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526179688] [2021-01-26 17:27:27,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:27,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:27,453 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) [2021-01-26 17:27:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:27,548 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2021-01-26 17:27:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:27:27,549 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 [2021-01-26 17:27:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:27,549 INFO L225 Difference]: With dead ends: 623 [2021-01-26 17:27:27,549 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:27:27,550 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 [2021-01-26 17:27:27,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-26 17:27:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:27,550 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:27:27,550 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) [2021-01-26 17:27:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:27:27,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:27:27,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:27:27,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:27:27 BasicIcfg [2021-01-26 17:27:27,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:27:27,567 INFO L168 Benchmark]: Toolchain (without parser) took 7201.53 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 277.0 MB in the beginning and 442.5 MB in the end (delta: -165.5 MB). Peak memory consumption was 163.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:27,568 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:27,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.18 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:27,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.17 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 283.3 MB in the end (delta: -38.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:27,570 INFO L168 Benchmark]: Boogie Preprocessor took 27.22 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 282.3 MB in the end (delta: 993.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:27,571 INFO L168 Benchmark]: RCFGBuilder took 711.29 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:27,574 INFO L168 Benchmark]: TraceAbstraction took 5630.54 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 257.1 MB in the beginning and 442.5 MB in the end (delta: -185.4 MB). Peak memory consumption was 143.8 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:27,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 687.18 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 128.17 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 283.3 MB in the end (delta: -38.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.22 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 282.3 MB in the end (delta: 993.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 711.29 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5630.54 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 257.1 MB in the beginning and 442.5 MB in the end (delta: -185.4 MB). Peak memory consumption was 143.8 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: 5.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, 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, 1.7s 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, 1.3s 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...