/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:25:40,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:25:40,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:25:40,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:25:40,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:25:40,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:25:40,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:25:40,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:25:40,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:25:40,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:25:40,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:25:40,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:25:40,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:25:40,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:25:40,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:25:40,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:25:40,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:25:40,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:25:40,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:25:40,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:25:40,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:25:40,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:25:40,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:25:40,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:25:40,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:25:40,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:25:40,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:25:40,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:25:40,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:25:40,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:25:40,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:25:40,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:25:40,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:25:40,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:25:40,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:25:40,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:25:40,245 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 [2021-01-20 21:25:40,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:25:40,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:25:40,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:25:40,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:25:40,282 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:25:40,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:25:40,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:25:40,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:25:40,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:25:40,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:25:40,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:25:40,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:25:40,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:25:40,284 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:25:40,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:25:40,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:25:40,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:25:40,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:25:40,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:25:40,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:25:40,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:25:40,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:25:40,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:25:40,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:25:40,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:25:40,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:25:40,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:25:40,287 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:25:40,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:25:40,288 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:25:40,288 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:25:40,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:25:40,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:25:40,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:25:40,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:25:40,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:25:40,790 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:25:40,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-01-20 21:25:40,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899b0f0d7/cfd2a7d9183d4b1597a5addec55aa77e/FLAG69e202705 [2021-01-20 21:25:41,585 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:25:41,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-01-20 21:25:41,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899b0f0d7/cfd2a7d9183d4b1597a5addec55aa77e/FLAG69e202705 [2021-01-20 21:25:41,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899b0f0d7/cfd2a7d9183d4b1597a5addec55aa77e [2021-01-20 21:25:41,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:25:41,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:25:41,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:25:41,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:25:41,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:25:41,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:25:41" (1/1) ... [2021-01-20 21:25:41,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4bdb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:41, skipping insertion in model container [2021-01-20 21:25:41,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:25:41" (1/1) ... [2021-01-20 21:25:41,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:25:41,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:25:42,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:25:42,399 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:25:42,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:25:42,552 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:25:42,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42 WrapperNode [2021-01-20 21:25:42,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:25:42,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:25:42,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:25:42,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:25:42,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:25:42,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:25:42,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:25:42,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:25:42,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (1/1) ... [2021-01-20 21:25:42,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:25:42,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:25:42,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:25:42,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:25:42,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (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 21:25:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:25:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:25:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:25:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:25:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:25:42,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:25:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:25:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:25:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:25:42,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:25:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:25:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:25:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:25:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:25:42,800 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 21:25:43,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:25:43,311 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:25:43,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:25:43 BoogieIcfgContainer [2021-01-20 21:25:43,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:25:43,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:25:43,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:25:43,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:25:43,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:25:41" (1/3) ... [2021-01-20 21:25:43,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f409714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:25:43, skipping insertion in model container [2021-01-20 21:25:43,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:25:42" (2/3) ... [2021-01-20 21:25:43,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f409714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:25:43, skipping insertion in model container [2021-01-20 21:25:43,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:25:43" (3/3) ... [2021-01-20 21:25:43,322 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-01-20 21:25:43,339 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:25:43,340 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:25:43,344 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:25:43,345 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:25:43,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,387 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,387 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,390 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,390 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,394 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,394 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,394 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,402 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,406 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,406 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:25:43,409 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:25:43,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:25:43,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:25:43,452 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:25:43,453 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:25:43,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:25:43,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:25:43,453 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:25:43,453 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:25:43,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:25:43,468 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 21:25:44,518 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 21:25:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 21:25:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:25:44,614 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:44,615 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 21:25:44,616 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:44,624 INFO L82 PathProgramCache]: Analyzing trace with hash 557790116, now seen corresponding path program 1 times [2021-01-20 21:25:44,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:44,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304779203] [2021-01-20 21:25:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:45,158 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 21:25:45,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304779203] [2021-01-20 21:25:45,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:45,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:25:45,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387415972] [2021-01-20 21:25:45,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:25:45,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:45,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:25:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:25:45,217 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 21:25:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:45,608 INFO L93 Difference]: Finished difference Result 13207 states and 46043 transitions. [2021-01-20 21:25:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:25:45,611 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 21:25:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:45,614 INFO L769 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 [2021-01-20 21:25:45,614 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 46043 transitions. Word has length 41 [2021-01-20 21:25:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:45,616 INFO L481 AbstractCegarLoop]: Abstraction has 13207 states and 46043 transitions. [2021-01-20 21:25:45,617 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 21:25:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 46043 transitions. [2021-01-20 21:25:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:25:45,644 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:45,644 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 21:25:45,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:25:45,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash -264049339, now seen corresponding path program 1 times [2021-01-20 21:25:45,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:45,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863660228] [2021-01-20 21:25:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:46,053 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 21:25:46,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863660228] [2021-01-20 21:25:46,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:46,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:25:46,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050541307] [2021-01-20 21:25:46,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:25:46,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:25:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:25:46,060 INFO L87 Difference]: Start difference. First operand 13207 states and 46043 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) [2021-01-20 21:25:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:46,552 INFO L93 Difference]: Finished difference Result 20311 states and 70411 transitions. [2021-01-20 21:25:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:25:46,552 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 21:25:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:46,554 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:25:46,554 INFO L78 Accepts]: Start accepts. Automaton has 20311 states and 70411 transitions. Word has length 43 [2021-01-20 21:25:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:46,554 INFO L481 AbstractCegarLoop]: Abstraction has 20311 states and 70411 transitions. [2021-01-20 21:25:46,555 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 21:25:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 20311 states and 70411 transitions. [2021-01-20 21:25:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:25:46,575 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:46,576 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:25:46,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:25:46,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1775680141, now seen corresponding path program 1 times [2021-01-20 21:25:46,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:46,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140365181] [2021-01-20 21:25:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:46,761 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 21:25:46,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140365181] [2021-01-20 21:25:46,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:46,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:25:46,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193810485] [2021-01-20 21:25:46,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:25:46,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:46,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:25:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:25:46,765 INFO L87 Difference]: Start difference. First operand 20311 states and 70411 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:47,407 INFO L93 Difference]: Finished difference Result 31567 states and 108017 transitions. [2021-01-20 21:25:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:25:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 21:25:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:47,409 INFO L769 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 [2021-01-20 21:25:47,409 INFO L78 Accepts]: Start accepts. Automaton has 31567 states and 108017 transitions. Word has length 44 [2021-01-20 21:25:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:47,410 INFO L481 AbstractCegarLoop]: Abstraction has 31567 states and 108017 transitions. [2021-01-20 21:25:47,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31567 states and 108017 transitions. [2021-01-20 21:25:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:25:47,495 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:47,495 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 21:25:47,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:25:47,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:47,503 INFO L82 PathProgramCache]: Analyzing trace with hash 397387748, now seen corresponding path program 1 times [2021-01-20 21:25:47,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:47,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256371580] [2021-01-20 21:25:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:47,763 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 21:25:47,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256371580] [2021-01-20 21:25:47,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:47,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:25:47,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298541540] [2021-01-20 21:25:47,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:25:47,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:25:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:25:47,766 INFO L87 Difference]: Start difference. First operand 31567 states and 108017 transitions. 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 21:25:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:48,096 INFO L93 Difference]: Finished difference Result 20700 states and 68835 transitions. [2021-01-20 21:25:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:25:48,097 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 21:25:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:48,101 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:25:48,101 INFO L78 Accepts]: Start accepts. Automaton has 20700 states and 68835 transitions. Word has length 45 [2021-01-20 21:25:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:48,101 INFO L481 AbstractCegarLoop]: Abstraction has 20700 states and 68835 transitions. [2021-01-20 21:25:48,102 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 21:25:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 20700 states and 68835 transitions. [2021-01-20 21:25:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:25:48,133 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:48,133 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] [2021-01-20 21:25:48,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:25:48,134 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash 214594115, now seen corresponding path program 1 times [2021-01-20 21:25:48,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:48,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894368421] [2021-01-20 21:25:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:48,336 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 21:25:48,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894368421] [2021-01-20 21:25:48,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:48,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:25:48,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609424841] [2021-01-20 21:25:48,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:25:48,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:48,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:25:48,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:25:48,339 INFO L87 Difference]: Start difference. First operand 20700 states and 68835 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-01-20 21:25:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:48,898 INFO L93 Difference]: Finished difference Result 11925 states and 38523 transitions. [2021-01-20 21:25:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:25:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2021-01-20 21:25:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:48,900 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:25:48,900 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 38523 transitions. Word has length 47 [2021-01-20 21:25:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:48,900 INFO L481 AbstractCegarLoop]: Abstraction has 11925 states and 38523 transitions. [2021-01-20 21:25:48,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-01-20 21:25:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 38523 transitions. [2021-01-20 21:25:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:25:48,921 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:48,922 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:25:48,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:25:48,922 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1212397294, now seen corresponding path program 1 times [2021-01-20 21:25:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944562435] [2021-01-20 21:25:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:49,024 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 21:25:49,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944562435] [2021-01-20 21:25:49,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:49,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:25:49,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209366188] [2021-01-20 21:25:49,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:25:49,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:49,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:25:49,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:25:49,027 INFO L87 Difference]: Start difference. First operand 11925 states and 38523 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:49,377 INFO L93 Difference]: Finished difference Result 20419 states and 65088 transitions. [2021-01-20 21:25:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:25:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 21:25:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:49,378 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:25:49,378 INFO L78 Accepts]: Start accepts. Automaton has 20419 states and 65088 transitions. Word has length 49 [2021-01-20 21:25:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:49,379 INFO L481 AbstractCegarLoop]: Abstraction has 20419 states and 65088 transitions. [2021-01-20 21:25:49,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:49,380 INFO L276 IsEmpty]: Start isEmpty. Operand 20419 states and 65088 transitions. [2021-01-20 21:25:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:25:49,417 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:49,418 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:25:49,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:25:49,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:49,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1431291322, now seen corresponding path program 1 times [2021-01-20 21:25:49,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:49,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369620703] [2021-01-20 21:25:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:49,568 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 21:25:49,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369620703] [2021-01-20 21:25:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:49,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:25:49,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692839559] [2021-01-20 21:25:49,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:25:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:25:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:25:49,571 INFO L87 Difference]: Start difference. First operand 20419 states and 65088 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:50,076 INFO L93 Difference]: Finished difference Result 12427 states and 39393 transitions. [2021-01-20 21:25:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:25:50,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 21:25:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:50,078 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:25:50,078 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 39393 transitions. Word has length 49 [2021-01-20 21:25:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:50,079 INFO L481 AbstractCegarLoop]: Abstraction has 12427 states and 39393 transitions. [2021-01-20 21:25:50,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:25:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 39393 transitions. [2021-01-20 21:25:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:25:50,105 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:25:50,105 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:25:50,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:25:50,106 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:25:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:25:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1425582298, now seen corresponding path program 1 times [2021-01-20 21:25:50,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:25:50,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815028837] [2021-01-20 21:25:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:25:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:25:50,212 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 21:25:50,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815028837] [2021-01-20 21:25:50,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:25:50,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:25:50,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321848837] [2021-01-20 21:25:50,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:25:50,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:25:50,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:25:50,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:25:50,214 INFO L87 Difference]: Start difference. First operand 12427 states and 39393 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 21:25:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:25:50,399 INFO L93 Difference]: Finished difference Result 18639 states and 58533 transitions. [2021-01-20 21:25:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:25:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-01-20 21:25:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:25:50,401 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 21:25:50,401 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 58533 transitions. Word has length 53 [2021-01-20 21:25:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:25:50,402 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 58533 transitions. [2021-01-20 21:25:50,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 21:25:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 58533 transitions. [2021-01-20 21:25:50,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:25:50,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:25:50,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:25:50 BasicIcfg [2021-01-20 21:25:50,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:25:50,593 INFO L168 Benchmark]: Toolchain (without parser) took 8713.07 ms. Allocated memory was 302.0 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 277.3 MB in the beginning and 2.5 GB in the end (delta: -2.2 GB). Peak memory consumption was 383.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:25:50,594 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.7 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:25:50,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.72 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.4 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:25:50,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:25:50,596 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:25:50,597 INFO L168 Benchmark]: RCFGBuilder took 671.44 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 262.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:25:50,598 INFO L168 Benchmark]: TraceAbstraction took 7268.55 ms. Allocated memory was 302.0 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 262.7 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 368.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:25:50,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.7 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 678.72 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.4 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 671.44 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 262.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7268.55 ms. Allocated memory was 302.0 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 262.7 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 368.6 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 949 SDtfs, 1596 SDslu, 3135 SDs, 0 SdLazy, 320 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31567occurred in iteration=3, 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, 42389 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...