/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:54:51,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:54:51,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:54:51,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:54:51,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:54:51,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:54:51,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:54:51,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:54:51,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:54:51,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:54:51,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:54:51,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:54:51,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:54:51,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:54:51,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:54:51,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:54:51,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:54:51,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:54:51,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:54:51,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:54:51,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:54:51,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:54:51,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:54:51,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:54:51,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:54:51,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:54:51,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:54:51,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:54:51,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:54:51,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:54:51,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:54:51,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:54:51,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:54:51,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:54:51,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:54:51,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:54:51,293 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-keepdead.epf [2020-12-17 23:54:51,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:54:51,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:54:51,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:54:51,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:54:51,357 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:54:51,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:54:51,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:54:51,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:54:51,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:54:51,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:54:51,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:54:51,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:54:51,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:54:51,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:54:51,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:54:51,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:54:51,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:54:51,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:54:51,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:54:51,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:54:51,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:54:51,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:54:51,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:54:51,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:54:51,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:54:51,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:54:51,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:54:51,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:54:51,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:54:51,363 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:54:51,363 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:54:51,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:54:51,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:54:51,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:54:51,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:54:51,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:54:51,839 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:54:51,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-12-17 23:54:51,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be55c1b7b/6798852e19734b6c9ad053ea7302111d/FLAGbbcbdc7ac [2020-12-17 23:54:52,541 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:54:52,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-12-17 23:54:52,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be55c1b7b/6798852e19734b6c9ad053ea7302111d/FLAGbbcbdc7ac [2020-12-17 23:54:52,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be55c1b7b/6798852e19734b6c9ad053ea7302111d [2020-12-17 23:54:52,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:54:52,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:54:52,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:54:52,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:54:52,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:54:52,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:54:52" (1/1) ... [2020-12-17 23:54:52,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38caa21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:52, skipping insertion in model container [2020-12-17 23:54:52,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:54:52" (1/1) ... [2020-12-17 23:54:52,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:54:52,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:54:53,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:54:53,350 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:54:53,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:54:53,543 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:54:53,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53 WrapperNode [2020-12-17 23:54:53,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:54:53,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:54:53,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:54:53,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:54:53,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:54:53,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:54:53,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:54:53,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:54:53,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... [2020-12-17 23:54:53,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:54:53,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:54:53,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:54:53,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:54:53,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:54:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:54:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:54:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:54:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:54:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:54:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:54:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:54:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:54:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:54:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:54:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:54:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:54:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:54:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:54:53,721 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:54:54,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:54:54,174 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:54:54,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:54:54 BoogieIcfgContainer [2020-12-17 23:54:54,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:54:54,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:54:54,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:54:54,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:54:54,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:54:52" (1/3) ... [2020-12-17 23:54:54,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3a2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:54:54, skipping insertion in model container [2020-12-17 23:54:54,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:54:53" (2/3) ... [2020-12-17 23:54:54,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3a2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:54:54, skipping insertion in model container [2020-12-17 23:54:54,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:54:54" (3/3) ... [2020-12-17 23:54:54,186 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-12-17 23:54:54,203 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:54:54,204 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:54:54,208 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:54:54,209 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:54:54,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,257 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,258 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,262 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,262 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:54:54,265 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:54:54,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:54:54,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:54:54,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:54:54,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:54:54,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:54:54,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:54:54,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:54:54,300 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:54:54,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:54:54,313 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2020-12-17 23:54:55,154 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) [2020-12-17 23:54:55,207 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) [2020-12-17 23:54:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-17 23:54:55,260 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:55,261 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] [2020-12-17 23:54:55,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -736353114, now seen corresponding path program 1 times [2020-12-17 23:54:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:55,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192649581] [2020-12-17 23:54:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:55,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192649581] [2020-12-17 23:54:55,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:55,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:54:55,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691339049] [2020-12-17 23:54:55,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:54:55,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:54:55,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:54:55,809 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) [2020-12-17 23:54:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:54:56,219 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2020-12-17 23:54:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:54:56,222 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 [2020-12-17 23:54:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:54:56,225 INFO L763 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 [2020-12-17 23:54:56,226 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 36159 transitions. Word has length 41 [2020-12-17 23:54:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:54:56,228 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 36159 transitions. [2020-12-17 23:54:56,229 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) [2020-12-17 23:54:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 36159 transitions. [2020-12-17 23:54:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 23:54:56,253 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:56,255 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] [2020-12-17 23:54:56,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:54:56,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2028391175, now seen corresponding path program 1 times [2020-12-17 23:54:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:56,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451856691] [2020-12-17 23:54:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:56,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451856691] [2020-12-17 23:54:56,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:56,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:54:56,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725742583] [2020-12-17 23:54:56,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:54:56,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:54:56,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:54:56,444 INFO L87 Difference]: Start difference. First operand 10463 states and 36159 transitions. 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) [2020-12-17 23:54:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:54:56,870 INFO L93 Difference]: Finished difference Result 16127 states and 55447 transitions. [2020-12-17 23:54:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:54:56,872 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 [2020-12-17 23:54:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:54:56,874 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:54:56,874 INFO L78 Accepts]: Start accepts. Automaton has 16127 states and 55447 transitions. Word has length 43 [2020-12-17 23:54:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:54:56,876 INFO L481 AbstractCegarLoop]: Abstraction has 16127 states and 55447 transitions. [2020-12-17 23:54:56,876 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) [2020-12-17 23:54:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16127 states and 55447 transitions. [2020-12-17 23:54:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:54:56,898 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:56,898 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] [2020-12-17 23:54:56,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:54:56,898 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash 565402146, now seen corresponding path program 1 times [2020-12-17 23:54:56,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:56,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849463436] [2020-12-17 23:54:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:57,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849463436] [2020-12-17 23:54:57,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:57,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:54:57,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666740047] [2020-12-17 23:54:57,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:54:57,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:54:57,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:54:57,184 INFO L87 Difference]: Start difference. First operand 16127 states and 55447 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2020-12-17 23:54:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:54:57,715 INFO L93 Difference]: Finished difference Result 24151 states and 82095 transitions. [2020-12-17 23:54:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:54:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 [2020-12-17 23:54:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:54:57,717 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:54:57,717 INFO L78 Accepts]: Start accepts. Automaton has 24151 states and 82095 transitions. Word has length 44 [2020-12-17 23:54:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:54:57,717 INFO L481 AbstractCegarLoop]: Abstraction has 24151 states and 82095 transitions. [2020-12-17 23:54:57,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2020-12-17 23:54:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 24151 states and 82095 transitions. [2020-12-17 23:54:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 23:54:57,905 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:57,906 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] [2020-12-17 23:54:57,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:54:57,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -676376959, now seen corresponding path program 1 times [2020-12-17 23:54:57,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:57,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113823199] [2020-12-17 23:54:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:58,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113823199] [2020-12-17 23:54:58,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:58,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:54:58,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667298760] [2020-12-17 23:54:58,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:54:58,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:58,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:54:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:54:58,045 INFO L87 Difference]: Start difference. First operand 24151 states and 82095 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2020-12-17 23:54:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:54:58,547 INFO L93 Difference]: Finished difference Result 39943 states and 133963 transitions. [2020-12-17 23:54:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:54:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 [2020-12-17 23:54:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:54:58,549 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:54:58,549 INFO L78 Accepts]: Start accepts. Automaton has 39943 states and 133963 transitions. Word has length 46 [2020-12-17 23:54:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:54:58,550 INFO L481 AbstractCegarLoop]: Abstraction has 39943 states and 133963 transitions. [2020-12-17 23:54:58,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2020-12-17 23:54:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 39943 states and 133963 transitions. [2020-12-17 23:54:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:54:58,593 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:58,593 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] [2020-12-17 23:54:58,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:54:58,594 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1519714679, now seen corresponding path program 1 times [2020-12-17 23:54:58,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:58,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183217942] [2020-12-17 23:54:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:58,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183217942] [2020-12-17 23:54:58,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:58,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:54:58,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650530872] [2020-12-17 23:54:58,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:54:58,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:58,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:54:58,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:54:58,832 INFO L87 Difference]: Start difference. First operand 39943 states and 133963 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2020-12-17 23:54:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:54:59,241 INFO L93 Difference]: Finished difference Result 31299 states and 102436 transitions. [2020-12-17 23:54:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:54:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2020-12-17 23:54:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:54:59,242 INFO L763 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 [2020-12-17 23:54:59,242 INFO L78 Accepts]: Start accepts. Automaton has 31299 states and 102436 transitions. Word has length 47 [2020-12-17 23:54:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:54:59,243 INFO L481 AbstractCegarLoop]: Abstraction has 31299 states and 102436 transitions. [2020-12-17 23:54:59,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2020-12-17 23:54:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31299 states and 102436 transitions. [2020-12-17 23:54:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 23:54:59,322 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:54:59,322 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] [2020-12-17 23:54:59,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:54:59,323 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:54:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:54:59,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2042804477, now seen corresponding path program 1 times [2020-12-17 23:54:59,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:54:59,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848007046] [2020-12-17 23:54:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:54:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:54:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:54:59,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848007046] [2020-12-17 23:54:59,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:54:59,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:54:59,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947481669] [2020-12-17 23:54:59,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:54:59,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:54:59,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:54:59,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:54:59,511 INFO L87 Difference]: Start difference. First operand 31299 states and 102436 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-12-17 23:54:59,777 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-12-17 23:55:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:00,097 INFO L93 Difference]: Finished difference Result 18033 states and 57430 transitions. [2020-12-17 23:55:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:55:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2020-12-17 23:55:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:00,098 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:55:00,099 INFO L78 Accepts]: Start accepts. Automaton has 18033 states and 57430 transitions. Word has length 48 [2020-12-17 23:55:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:00,099 INFO L481 AbstractCegarLoop]: Abstraction has 18033 states and 57430 transitions. [2020-12-17 23:55:00,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-12-17 23:55:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18033 states and 57430 transitions. [2020-12-17 23:55:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-17 23:55:00,127 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:00,128 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] [2020-12-17 23:55:00,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:55:00,128 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash -207995556, now seen corresponding path program 1 times [2020-12-17 23:55:00,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:00,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247287194] [2020-12-17 23:55:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:00,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247287194] [2020-12-17 23:55:00,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:00,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:55:00,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037408028] [2020-12-17 23:55:00,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:55:00,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:00,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:55:00,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:55:00,406 INFO L87 Difference]: Start difference. First operand 18033 states and 57430 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-12-17 23:55:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:00,821 INFO L93 Difference]: Finished difference Result 11571 states and 36475 transitions. [2020-12-17 23:55:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:55:00,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2020-12-17 23:55:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:00,823 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:55:00,823 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 36475 transitions. Word has length 50 [2020-12-17 23:55:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:00,823 INFO L481 AbstractCegarLoop]: Abstraction has 11571 states and 36475 transitions. [2020-12-17 23:55:00,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-12-17 23:55:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 36475 transitions. [2020-12-17 23:55:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:55:00,844 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:00,845 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] [2020-12-17 23:55:00,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:55:00,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash 848095813, now seen corresponding path program 1 times [2020-12-17 23:55:00,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:00,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701696581] [2020-12-17 23:55:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:00,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701696581] [2020-12-17 23:55:00,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:00,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:00,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559379253] [2020-12-17 23:55:00,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:00,978 INFO L87 Difference]: Start difference. First operand 11571 states and 36475 transitions. 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) [2020-12-17 23:55:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:01,255 INFO L93 Difference]: Finished difference Result 17174 states and 53588 transitions. [2020-12-17 23:55:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:55:01,256 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 [2020-12-17 23:55:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:01,257 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:55:01,257 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 53588 transitions. Word has length 52 [2020-12-17 23:55:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:01,258 INFO L481 AbstractCegarLoop]: Abstraction has 17174 states and 53588 transitions. [2020-12-17 23:55:01,258 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) [2020-12-17 23:55:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 53588 transitions. [2020-12-17 23:55:01,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:55:01,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:55:01,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:55:01 BasicIcfg [2020-12-17 23:55:01,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:55:01,305 INFO L168 Benchmark]: Toolchain (without parser) took 8446.29 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 277.2 MB in the beginning and 1.2 GB in the end (delta: -886.7 MB). Peak memory consumption was 323.9 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:01,306 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:01,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.23 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.3 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:01,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 284.6 MB in the end (delta: -38.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:01,309 INFO L168 Benchmark]: Boogie Preprocessor took 28.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 282.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:01,310 INFO L168 Benchmark]: RCFGBuilder took 538.39 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 260.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:01,313 INFO L168 Benchmark]: TraceAbstraction took 7117.08 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 259.5 MB in the beginning and 1.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 304.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:01,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 686.23 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.3 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 284.6 MB in the end (delta: -38.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 282.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 538.39 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 260.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7117.08 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 259.5 MB in the beginning and 1.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 304.6 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: 6.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 901 SDtfs, 1660 SDslu, 3026 SDs, 0 SdLazy, 355 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39943occurred in iteration=4, 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, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 43187 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...