/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:12:35,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:12:35,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:12:35,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:12:35,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:12:35,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:12:35,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:12:35,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:12:35,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:12:35,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:12:35,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:12:35,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:12:35,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:12:35,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:12:35,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:12:35,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:12:35,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:12:35,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:12:35,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:12:35,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:12:35,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:12:35,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:12:35,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:12:35,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:12:35,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:12:35,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:12:35,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:12:35,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:12:35,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:12:35,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:12:35,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:12:35,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:12:35,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:12:35,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:12:35,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:12:35,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:12:35,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:12:35,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:12:35,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:12:35,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:12:35,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:12:35,275 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:12:35,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:12:35,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:12:35,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:12:35,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:12:35,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:12:35,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:12:35,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:12:35,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:12:35,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:12:35,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:12:35,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:12:35,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:12:35,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:12:35,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:12:35,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:12:35,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:12:35,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:12:35,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:12:35,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:12:35,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:12:35,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:12:35,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:12:35,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:12:35,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:12:35,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:12:35,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:12:35,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:12:35,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:12:35,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:12:35,763 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:12:35,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-11 18:12:35,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078382c33/12f6e9a422db44d389e2468cbd1eefe2/FLAG34accdedf [2020-11-11 18:12:36,514 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:12:36,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-11 18:12:36,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078382c33/12f6e9a422db44d389e2468cbd1eefe2/FLAG34accdedf [2020-11-11 18:12:36,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078382c33/12f6e9a422db44d389e2468cbd1eefe2 [2020-11-11 18:12:36,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:12:36,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:12:36,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:36,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:12:36,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:12:36,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:36" (1/1) ... [2020-11-11 18:12:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ee4f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:36, skipping insertion in model container [2020-11-11 18:12:36,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:36" (1/1) ... [2020-11-11 18:12:36,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:12:36,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:12:37,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:37,415 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:12:37,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:37,662 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:12:37,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37 WrapperNode [2020-11-11 18:12:37,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:37,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:37,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:12:37,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:12:37,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:37,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:12:37,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:12:37,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:12:37,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (1/1) ... [2020-11-11 18:12:37,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:12:37,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:12:37,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:12:37,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:12:37,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (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 [2020-11-11 18:12:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:12:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:12:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:12:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:12:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:12:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:12:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:12:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:12:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:12:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:12:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:12:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:12:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:12:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:12:37,925 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:12:38,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:12:38,473 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:12:38,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:38 BoogieIcfgContainer [2020-11-11 18:12:38,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:12:38,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:12:38,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:12:38,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:12:38,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:12:36" (1/3) ... [2020-11-11 18:12:38,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759bcd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:38, skipping insertion in model container [2020-11-11 18:12:38,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:37" (2/3) ... [2020-11-11 18:12:38,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759bcd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:38, skipping insertion in model container [2020-11-11 18:12:38,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:38" (3/3) ... [2020-11-11 18:12:38,485 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-11-11 18:12:38,501 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:12:38,502 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:12:38,506 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:12:38,507 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:12:38,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,538 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,538 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:38,564 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:12:38,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:12:38,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:12:38,603 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:12:38,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:12:38,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:12:38,604 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:12:38,604 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:12:38,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:12:38,604 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:12:38,618 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:12:39,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:12:39,720 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:39,721 INFO L494 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] [2020-11-11 18:12:39,721 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2020-11-11 18:12:39,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:39,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404886490] [2020-11-11 18:12:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:40,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404886490] [2020-11-11 18:12:40,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:40,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:40,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682829886] [2020-11-11 18:12:40,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:40,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:40,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:40,389 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:40,830 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2020-11-11 18:12:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-11 18:12:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:40,897 INFO L225 Difference]: With dead ends: 11318 [2020-11-11 18:12:40,897 INFO L226 Difference]: Without dead ends: 4213 [2020-11-11 18:12:40,899 INFO L749 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 [2020-11-11 18:12:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-11-11 18:12:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4213. [2020-11-11 18:12:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 3.3874643874643873) internal successors, (14268), 4212 states have internal predecessors, (14268), 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) [2020-11-11 18:12:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 14268 transitions. [2020-11-11 18:12:41,292 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 14268 transitions. Word has length 42 [2020-11-11 18:12:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:41,293 INFO L481 AbstractCegarLoop]: Abstraction has 4213 states and 14268 transitions. [2020-11-11 18:12:41,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 14268 transitions. [2020-11-11 18:12:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:12:41,304 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:41,305 INFO L494 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] [2020-11-11 18:12:41,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:12:41,305 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1558378250, now seen corresponding path program 1 times [2020-11-11 18:12:41,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:41,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688389906] [2020-11-11 18:12:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:41,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688389906] [2020-11-11 18:12:41,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:41,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:41,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841475942] [2020-11-11 18:12:41,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:41,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:41,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:41,597 INFO L87 Difference]: Start difference. First operand 4213 states and 14268 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) [2020-11-11 18:12:41,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:41,820 INFO L93 Difference]: Finished difference Result 6434 states and 21456 transitions. [2020-11-11 18:12:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:41,821 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 [2020-11-11 18:12:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:41,849 INFO L225 Difference]: With dead ends: 6434 [2020-11-11 18:12:41,850 INFO L226 Difference]: Without dead ends: 3235 [2020-11-11 18:12:41,851 INFO L749 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 [2020-11-11 18:12:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-11-11 18:12:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3235. [2020-11-11 18:12:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 3.3123067408781695) internal successors, (10712), 3234 states have internal predecessors, (10712), 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) [2020-11-11 18:12:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 10712 transitions. [2020-11-11 18:12:42,028 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 10712 transitions. Word has length 45 [2020-11-11 18:12:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:42,028 INFO L481 AbstractCegarLoop]: Abstraction has 3235 states and 10712 transitions. [2020-11-11 18:12:42,029 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) [2020-11-11 18:12:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 10712 transitions. [2020-11-11 18:12:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:12:42,038 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:42,039 INFO L494 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] [2020-11-11 18:12:42,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:12:42,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash -529352823, now seen corresponding path program 1 times [2020-11-11 18:12:42,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:42,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692214705] [2020-11-11 18:12:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:42,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692214705] [2020-11-11 18:12:42,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:42,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:42,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836679023] [2020-11-11 18:12:42,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:42,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:42,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:42,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:42,226 INFO L87 Difference]: Start difference. First operand 3235 states and 10712 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) [2020-11-11 18:12:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:42,403 INFO L93 Difference]: Finished difference Result 3475 states and 11384 transitions. [2020-11-11 18:12:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:42,404 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 [2020-11-11 18:12:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:42,428 INFO L225 Difference]: With dead ends: 3475 [2020-11-11 18:12:42,428 INFO L226 Difference]: Without dead ends: 2915 [2020-11-11 18:12:42,430 INFO L749 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 [2020-11-11 18:12:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-11-11 18:12:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2020-11-11 18:12:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 3.286204529855868) internal successors, (9576), 2914 states have internal predecessors, (9576), 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) [2020-11-11 18:12:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 9576 transitions. [2020-11-11 18:12:42,603 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 9576 transitions. Word has length 47 [2020-11-11 18:12:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:42,605 INFO L481 AbstractCegarLoop]: Abstraction has 2915 states and 9576 transitions. [2020-11-11 18:12:42,605 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) [2020-11-11 18:12:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 9576 transitions. [2020-11-11 18:12:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:12:42,616 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:42,616 INFO L494 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] [2020-11-11 18:12:42,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:12:42,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1641571734, now seen corresponding path program 1 times [2020-11-11 18:12:42,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:42,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314362224] [2020-11-11 18:12:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314362224] [2020-11-11 18:12:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165483432] [2020-11-11 18:12:42,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:42,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:42,803 INFO L87 Difference]: Start difference. First operand 2915 states and 9576 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-11-11 18:12:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:43,004 INFO L93 Difference]: Finished difference Result 3855 states and 12593 transitions. [2020-11-11 18:12:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:43,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2020-11-11 18:12:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:43,023 INFO L225 Difference]: With dead ends: 3855 [2020-11-11 18:12:43,023 INFO L226 Difference]: Without dead ends: 2090 [2020-11-11 18:12:43,024 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:12:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-11-11 18:12:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2020-11-11 18:12:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 3.1680229775011965) internal successors, (6618), 2089 states have internal predecessors, (6618), 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) [2020-11-11 18:12:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 6618 transitions. [2020-11-11 18:12:43,114 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 6618 transitions. Word has length 49 [2020-11-11 18:12:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:43,114 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 6618 transitions. [2020-11-11 18:12:43,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-11-11 18:12:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 6618 transitions. [2020-11-11 18:12:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:12:43,122 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:43,122 INFO L494 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] [2020-11-11 18:12:43,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:12:43,122 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1854967778, now seen corresponding path program 1 times [2020-11-11 18:12:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:43,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821459447] [2020-11-11 18:12:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:43,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821459447] [2020-11-11 18:12:43,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:43,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:43,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240533204] [2020-11-11 18:12:43,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:43,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:43,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:43,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:43,369 INFO L87 Difference]: Start difference. First operand 2090 states and 6618 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2020-11-11 18:12:43,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:43,536 INFO L93 Difference]: Finished difference Result 2646 states and 8314 transitions. [2020-11-11 18:12:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:43,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2020-11-11 18:12:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:43,552 INFO L225 Difference]: With dead ends: 2646 [2020-11-11 18:12:43,553 INFO L226 Difference]: Without dead ends: 1934 [2020-11-11 18:12:43,553 INFO L749 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 [2020-11-11 18:12:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-11-11 18:12:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1934. [2020-11-11 18:12:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 3.1370926021727885) internal successors, (6064), 1933 states have internal predecessors, (6064), 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) [2020-11-11 18:12:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 6064 transitions. [2020-11-11 18:12:43,625 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 6064 transitions. Word has length 50 [2020-11-11 18:12:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:43,625 INFO L481 AbstractCegarLoop]: Abstraction has 1934 states and 6064 transitions. [2020-11-11 18:12:43,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2020-11-11 18:12:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 6064 transitions. [2020-11-11 18:12:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:12:43,631 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:43,632 INFO L494 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] [2020-11-11 18:12:43,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:12:43,632 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:43,633 INFO L82 PathProgramCache]: Analyzing trace with hash -250295335, now seen corresponding path program 1 times [2020-11-11 18:12:43,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:43,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181614316] [2020-11-11 18:12:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:43,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181614316] [2020-11-11 18:12:43,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:43,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:43,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500347679] [2020-11-11 18:12:43,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:43,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:43,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:43,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:43,754 INFO L87 Difference]: Start difference. First operand 1934 states and 6064 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2020-11-11 18:12:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:43,924 INFO L93 Difference]: Finished difference Result 2114 states and 6487 transitions. [2020-11-11 18:12:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:43,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2020-11-11 18:12:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:43,936 INFO L225 Difference]: With dead ends: 2114 [2020-11-11 18:12:43,937 INFO L226 Difference]: Without dead ends: 1514 [2020-11-11 18:12:43,937 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:12:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-11-11 18:12:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2020-11-11 18:12:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.019828155981494) internal successors, (4569), 1513 states have internal predecessors, (4569), 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) [2020-11-11 18:12:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4569 transitions. [2020-11-11 18:12:44,019 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4569 transitions. Word has length 51 [2020-11-11 18:12:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:44,020 INFO L481 AbstractCegarLoop]: Abstraction has 1514 states and 4569 transitions. [2020-11-11 18:12:44,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2020-11-11 18:12:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4569 transitions. [2020-11-11 18:12:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 18:12:44,025 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:44,025 INFO L494 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] [2020-11-11 18:12:44,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:12:44,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1821297602, now seen corresponding path program 1 times [2020-11-11 18:12:44,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:44,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764807751] [2020-11-11 18:12:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:44,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764807751] [2020-11-11 18:12:44,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:44,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:12:44,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432931187] [2020-11-11 18:12:44,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:12:44,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:12:44,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:12:44,184 INFO L87 Difference]: Start difference. First operand 1514 states and 4569 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:44,382 INFO L93 Difference]: Finished difference Result 1271 states and 3696 transitions. [2020-11-11 18:12:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:12:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2020-11-11 18:12:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:44,392 INFO L225 Difference]: With dead ends: 1271 [2020-11-11 18:12:44,393 INFO L226 Difference]: Without dead ends: 911 [2020-11-11 18:12:44,393 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:12:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-11-11 18:12:44,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2020-11-11 18:12:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.812087912087912) internal successors, (2559), 910 states have internal predecessors, (2559), 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) [2020-11-11 18:12:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2559 transitions. [2020-11-11 18:12:44,434 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2559 transitions. Word has length 52 [2020-11-11 18:12:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:44,435 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 2559 transitions. [2020-11-11 18:12:44,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2559 transitions. [2020-11-11 18:12:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:12:44,439 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:44,439 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:12:44,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:12:44,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2020-11-11 18:12:44,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:44,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033874671] [2020-11-11 18:12:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:44,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033874671] [2020-11-11 18:12:44,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:44,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:44,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737295404] [2020-11-11 18:12:44,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:44,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:44,615 INFO L87 Difference]: Start difference. First operand 911 states and 2559 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:44,716 INFO L93 Difference]: Finished difference Result 803 states and 2235 transitions. [2020-11-11 18:12:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:12:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-11 18:12:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:44,717 INFO L225 Difference]: With dead ends: 803 [2020-11-11 18:12:44,717 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:12:44,717 INFO L749 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 [2020-11-11 18:12:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:12:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:12:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2020-11-11 18:12:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:12:44,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:12:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:44,719 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:12:44,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:12:44,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:12:44,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:12:44,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:12:44 BasicIcfg [2020-11-11 18:12:44,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:12:44,728 INFO L168 Benchmark]: Toolchain (without parser) took 7952.05 ms. Allocated memory was 302.0 MB in the beginning and 631.2 MB in the end (delta: 329.3 MB). Free memory was 275.8 MB in the beginning and 436.2 MB in the end (delta: -160.4 MB). Peak memory consumption was 170.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:44,728 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:44,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.13 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 276.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:44,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.72 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 274.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:44,731 INFO L168 Benchmark]: Boogie Preprocessor took 60.66 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 273.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:44,731 INFO L168 Benchmark]: RCFGBuilder took 646.69 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 250.1 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:44,732 INFO L168 Benchmark]: TraceAbstraction took 6247.41 ms. Allocated memory was 302.0 MB in the beginning and 631.2 MB in the end (delta: 329.3 MB). Free memory was 249.1 MB in the beginning and 436.2 MB in the end (delta: -187.1 MB). Peak memory consumption was 142.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:44,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 875.13 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 276.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 97.72 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 274.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.66 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 273.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 646.69 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 250.1 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6247.41 ms. Allocated memory was 302.0 MB in the beginning and 631.2 MB in the end (delta: 329.3 MB). Free memory was 249.1 MB in the beginning and 436.2 MB in the end (delta: -187.1 MB). Peak memory consumption was 142.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 765 SDtfs, 1031 SDslu, 2388 SDs, 0 SdLazy, 296 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 48748 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...