/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/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:48:18,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:48:18,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:48:18,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:48:18,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:48:18,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:48:18,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:48:18,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:48:18,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:48:18,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:48:18,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:48:18,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:48:18,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:48:18,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:48:18,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:48:18,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:48:18,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:48:18,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:48:18,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:48:18,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:48:18,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:48:18,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:48:18,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:48:18,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:48:18,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:48:18,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:48:18,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:48:18,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:48:18,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:48:18,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:48:18,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:48:18,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:48:18,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:48:18,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:48:18,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:48:18,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:48:18,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:48:18,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:48:18,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:48:18,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:48:18,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:48:18,273 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 14:48:18,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:48:18,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:48:18,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:48:18,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:48:18,329 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:48:18,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:48:18,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:48:18,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:48:18,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:48:18,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:48:18,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:48:18,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:48:18,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:48:18,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:48:18,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:48:18,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:48:18,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:48:18,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:48:18,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:48:18,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:48:18,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:48:18,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:48:18,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:48:18,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:48:18,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:48:18,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:48:18,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:48:18,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:48:18,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:48:18,336 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:48:18,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:48:18,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:48:18,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:48:18,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:48:18,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:48:18,871 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:48:18,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-01-20 14:48:18,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341dff3a0/385da8b8677a44d9879baeb37e4c9ab2/FLAGc36580ee5 [2021-01-20 14:48:19,637 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:48:19,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-01-20 14:48:19,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341dff3a0/385da8b8677a44d9879baeb37e4c9ab2/FLAGc36580ee5 [2021-01-20 14:48:19,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341dff3a0/385da8b8677a44d9879baeb37e4c9ab2 [2021-01-20 14:48:19,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:48:19,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:48:19,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:48:19,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:48:19,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:48:19,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:48:19" (1/1) ... [2021-01-20 14:48:19,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d926e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:19, skipping insertion in model container [2021-01-20 14:48:19,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:48:19" (1/1) ... [2021-01-20 14:48:19,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:48:20,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:48:20,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:48:20,515 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:48:20,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:48:20,728 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:48:20,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20 WrapperNode [2021-01-20 14:48:20,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:48:20,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:48:20,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:48:20,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:48:20,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:48:20,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:48:20,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:48:20,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:48:20,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (1/1) ... [2021-01-20 14:48:20,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:48:20,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:48:20,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:48:20,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:48:20,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (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 14:48:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:48:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:48:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:48:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:48:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:48:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:48:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:48:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:48:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:48:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:48:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:48:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:48:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:48:20,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:48:20,992 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 14:48:21,542 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:48:21,543 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:48:21,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:48:21 BoogieIcfgContainer [2021-01-20 14:48:21,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:48:21,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:48:21,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:48:21,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:48:21,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:48:19" (1/3) ... [2021-01-20 14:48:21,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18cc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:48:21, skipping insertion in model container [2021-01-20 14:48:21,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:48:20" (2/3) ... [2021-01-20 14:48:21,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18cc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:48:21, skipping insertion in model container [2021-01-20 14:48:21,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:48:21" (3/3) ... [2021-01-20 14:48:21,554 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-01-20 14:48:21,569 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:48:21,569 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:48:21,573 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:48:21,574 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:48:21,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,614 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,615 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,615 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,616 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,620 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,620 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:48:21,637 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:48:21,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:48:21,675 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:48:21,675 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:48:21,675 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:48:21,675 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:48:21,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:48:21,676 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:48:21,676 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:48:21,676 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:48:21,689 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 14:48:22,381 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 14:48:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 14:48:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:48:22,490 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:22,491 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] [2021-01-20 14:48:22,492 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:22,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1677715490, now seen corresponding path program 1 times [2021-01-20 14:48:22,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:22,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969696425] [2021-01-20 14:48:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:23,022 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 14:48:23,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969696425] [2021-01-20 14:48:23,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:23,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:48:23,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414034007] [2021-01-20 14:48:23,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:48:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:23,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:48:23,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:48:23,076 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 14:48:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:23,567 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2021-01-20 14:48:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:48:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-01-20 14:48:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:23,625 INFO L225 Difference]: With dead ends: 10463 [2021-01-20 14:48:23,625 INFO L226 Difference]: Without dead ends: 3953 [2021-01-20 14:48:23,627 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:48:23,627 INFO L78 Accepts]: Start accepts. Automaton has 3953 states. Word has length 41 [2021-01-20 14:48:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:23,629 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states. [2021-01-20 14:48:23,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 14:48:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states. [2021-01-20 14:48:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:48:23,643 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:23,643 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] [2021-01-20 14:48:23,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:48:23,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:23,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:23,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1722165763, now seen corresponding path program 1 times [2021-01-20 14:48:23,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:23,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520899855] [2021-01-20 14:48:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:23,871 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 14:48:23,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520899855] [2021-01-20 14:48:23,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:23,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:48:23,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107276487] [2021-01-20 14:48:23,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:48:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:23,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:48:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:48:23,876 INFO L87 Difference]: Start difference. First operand 3953 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 14:48:24,114 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-01-20 14:48:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:24,282 INFO L93 Difference]: Finished difference Result 4553 states and 15234 transitions. [2021-01-20 14:48:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:48:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-01-20 14:48:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:24,320 INFO L225 Difference]: With dead ends: 4553 [2021-01-20 14:48:24,320 INFO L226 Difference]: Without dead ends: 3713 [2021-01-20 14:48:24,321 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 14:48:24,322 INFO L78 Accepts]: Start accepts. Automaton has 3713 states. Word has length 43 [2021-01-20 14:48:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:24,323 INFO L481 AbstractCegarLoop]: Abstraction has 3713 states. [2021-01-20 14:48:24,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 14:48:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states. [2021-01-20 14:48:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:48:24,336 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:24,337 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 14:48:24,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:48:24,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash -76177078, now seen corresponding path program 1 times [2021-01-20 14:48:24,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:24,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839149451] [2021-01-20 14:48:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:24,533 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 14:48:24,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839149451] [2021-01-20 14:48:24,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:24,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:48:24,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236957560] [2021-01-20 14:48:24,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:48:24,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:48:24,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:48:24,537 INFO L87 Difference]: Start difference. First operand 3713 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 14:48:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:24,862 INFO L93 Difference]: Finished difference Result 4553 states and 15064 transitions. [2021-01-20 14:48:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:48:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 14:48:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:24,893 INFO L225 Difference]: With dead ends: 4553 [2021-01-20 14:48:24,893 INFO L226 Difference]: Without dead ends: 3377 [2021-01-20 14:48:24,893 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 14:48:24,894 INFO L78 Accepts]: Start accepts. Automaton has 3377 states. Word has length 45 [2021-01-20 14:48:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:24,894 INFO L481 AbstractCegarLoop]: Abstraction has 3377 states. [2021-01-20 14:48:24,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 14:48:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states. [2021-01-20 14:48:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:48:24,906 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:24,906 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] [2021-01-20 14:48:24,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:48:24,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1683529846, now seen corresponding path program 1 times [2021-01-20 14:48:24,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:24,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929622596] [2021-01-20 14:48:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:25,111 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 14:48:25,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929622596] [2021-01-20 14:48:25,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:25,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:48:25,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566699854] [2021-01-20 14:48:25,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:48:25,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:25,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:48:25,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:48:25,115 INFO L87 Difference]: Start difference. First operand 3377 states. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 14:48:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:25,326 INFO L93 Difference]: Finished difference Result 3281 states and 10456 transitions. [2021-01-20 14:48:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:48:25,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-01-20 14:48:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:25,346 INFO L225 Difference]: With dead ends: 3281 [2021-01-20 14:48:25,346 INFO L226 Difference]: Without dead ends: 2297 [2021-01-20 14:48:25,347 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 14:48:25,347 INFO L78 Accepts]: Start accepts. Automaton has 2297 states. Word has length 46 [2021-01-20 14:48:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:25,348 INFO L481 AbstractCegarLoop]: Abstraction has 2297 states. [2021-01-20 14:48:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 14:48:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states. [2021-01-20 14:48:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:48:25,357 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:25,357 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 14:48:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:48:25,358 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:25,359 INFO L82 PathProgramCache]: Analyzing trace with hash 563011175, now seen corresponding path program 1 times [2021-01-20 14:48:25,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165212568] [2021-01-20 14:48:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:25,545 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 14:48:25,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165212568] [2021-01-20 14:48:25,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:25,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:48:25,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591015148] [2021-01-20 14:48:25,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:48:25,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:48:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:48:25,548 INFO L87 Difference]: Start difference. First operand 2297 states. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 14:48:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:25,772 INFO L93 Difference]: Finished difference Result 1658 states and 4985 transitions. [2021-01-20 14:48:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:48:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 14:48:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:25,782 INFO L225 Difference]: With dead ends: 1658 [2021-01-20 14:48:25,782 INFO L226 Difference]: Without dead ends: 1154 [2021-01-20 14:48:25,783 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 14:48:25,783 INFO L78 Accepts]: Start accepts. Automaton has 1154 states. Word has length 48 [2021-01-20 14:48:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:25,783 INFO L481 AbstractCegarLoop]: Abstraction has 1154 states. [2021-01-20 14:48:25,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 14:48:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states. [2021-01-20 14:48:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:48:25,789 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:25,790 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 14:48:25,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:48:25,790 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:25,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1443652201, now seen corresponding path program 1 times [2021-01-20 14:48:25,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:25,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688412274] [2021-01-20 14:48:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:25,978 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 14:48:25,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688412274] [2021-01-20 14:48:25,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:25,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:48:25,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67877551] [2021-01-20 14:48:25,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:48:25,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:25,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:48:25,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:48:25,982 INFO L87 Difference]: Start difference. First operand 1154 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:26,105 INFO L93 Difference]: Finished difference Result 1637 states and 4789 transitions. [2021-01-20 14:48:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:48:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:26,120 INFO L225 Difference]: With dead ends: 1637 [2021-01-20 14:48:26,120 INFO L226 Difference]: Without dead ends: 834 [2021-01-20 14:48:26,121 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 14:48:26,121 INFO L78 Accepts]: Start accepts. Automaton has 834 states. Word has length 52 [2021-01-20 14:48:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:26,121 INFO L481 AbstractCegarLoop]: Abstraction has 834 states. [2021-01-20 14:48:26,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states. [2021-01-20 14:48:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:48:26,126 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:26,126 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 14:48:26,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:48:26,127 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1808649785, now seen corresponding path program 2 times [2021-01-20 14:48:26,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:26,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736889284] [2021-01-20 14:48:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:26,323 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 14:48:26,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736889284] [2021-01-20 14:48:26,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:26,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:48:26,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274956112] [2021-01-20 14:48:26,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:48:26,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:26,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:48:26,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:48:26,326 INFO L87 Difference]: Start difference. First operand 834 states. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 14:48:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:26,421 INFO L93 Difference]: Finished difference Result 1205 states and 3469 transitions. [2021-01-20 14:48:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 14:48:26,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 14:48:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:26,426 INFO L225 Difference]: With dead ends: 1205 [2021-01-20 14:48:26,426 INFO L226 Difference]: Without dead ends: 658 [2021-01-20 14:48:26,427 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 14:48:26,427 INFO L78 Accepts]: Start accepts. Automaton has 658 states. Word has length 52 [2021-01-20 14:48:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:26,427 INFO L481 AbstractCegarLoop]: Abstraction has 658 states. [2021-01-20 14:48:26,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 14:48:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states. [2021-01-20 14:48:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:48:26,431 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:48:26,431 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 14:48:26,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:48:26,432 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:48:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:48:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash 976887845, now seen corresponding path program 3 times [2021-01-20 14:48:26,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:48:26,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250254765] [2021-01-20 14:48:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:48:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:48:26,562 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 14:48:26,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250254765] [2021-01-20 14:48:26,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:48:26,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:48:26,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311470200] [2021-01-20 14:48:26,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:48:26,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:48:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:48:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:48:26,565 INFO L87 Difference]: Start difference. First operand 658 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:48:26,663 INFO L93 Difference]: Finished difference Result 550 states and 1528 transitions. [2021-01-20 14:48:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:48:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:48:26,664 INFO L225 Difference]: With dead ends: 550 [2021-01-20 14:48:26,664 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:48:26,665 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:48:26,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 52 [2021-01-20 14:48:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:48:26,665 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:48:26,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 14:48:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:48:26,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:48:26,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:48:26,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:48:26 BasicIcfg [2021-01-20 14:48:26,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:48:26,674 INFO L168 Benchmark]: Toolchain (without parser) took 6714.45 ms. Allocated memory was 310.4 MB in the beginning and 633.3 MB in the end (delta: 323.0 MB). Free memory was 284.7 MB in the beginning and 491.7 MB in the end (delta: -207.0 MB). Peak memory consumption was 117.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,675 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 281.3 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:48:26,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.72 ms. Allocated memory is still 310.4 MB. Free memory was 284.5 MB in the beginning and 285.0 MB in the end (delta: -499.6 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.80 ms. Allocated memory is still 310.4 MB. Free memory was 285.0 MB in the beginning and 282.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,677 INFO L168 Benchmark]: Boogie Preprocessor took 62.88 ms. Allocated memory is still 310.4 MB. Free memory was 282.9 MB in the beginning and 281.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,679 INFO L168 Benchmark]: RCFGBuilder took 659.35 ms. Allocated memory is still 310.4 MB. Free memory was 281.8 MB in the beginning and 258.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,681 INFO L168 Benchmark]: TraceAbstraction took 5124.76 ms. Allocated memory was 310.4 MB in the beginning and 633.3 MB in the end (delta: 323.0 MB). Free memory was 258.8 MB in the beginning and 491.7 MB in the end (delta: -232.9 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:48:26,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 281.3 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 765.72 ms. Allocated memory is still 310.4 MB. Free memory was 284.5 MB in the beginning and 285.0 MB in the end (delta: -499.6 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 90.80 ms. Allocated memory is still 310.4 MB. Free memory was 285.0 MB in the beginning and 282.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.88 ms. Allocated memory is still 310.4 MB. Free memory was 282.9 MB in the beginning and 281.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 659.35 ms. Allocated memory is still 310.4 MB. Free memory was 281.8 MB in the beginning and 258.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5124.76 ms. Allocated memory was 310.4 MB in the beginning and 633.3 MB in the end (delta: 323.0 MB). Free memory was 258.8 MB in the beginning and 491.7 MB in the end (delta: -232.9 MB). Peak memory consumption was 89.0 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 707 SDtfs, 947 SDslu, 2306 SDs, 0 SdLazy, 278 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8447occurred 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, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 46089 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...