/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:28:45,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:28:45,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:28:45,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:28:45,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:28:45,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:28:45,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:28:45,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:28:45,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:28:45,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:28:45,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:28:45,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:28:45,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:28:45,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:28:45,379 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:28:45,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:28:45,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:28:45,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:28:45,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:28:45,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:28:45,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:28:45,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:28:45,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:28:45,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:28:45,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:28:45,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:28:45,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:28:45,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:28:45,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:28:45,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:28:45,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:28:45,665 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:28:45,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-03-10 17:28:45,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580990f3d/cb400234510b4424ad278f6d00e4174c/FLAGad62094e5 [2021-03-10 17:28:46,101 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:28:46,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-03-10 17:28:46,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580990f3d/cb400234510b4424ad278f6d00e4174c/FLAGad62094e5 [2021-03-10 17:28:46,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580990f3d/cb400234510b4424ad278f6d00e4174c [2021-03-10 17:28:46,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:28:46,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:28:46,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:28:46,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:28:46,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:28:46,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c261a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46, skipping insertion in model container [2021-03-10 17:28:46,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:28:46,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:28:46,591 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i[950,963] [2021-03-10 17:28:46,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:28:46,679 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:28:46,727 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i[950,963] [2021-03-10 17:28:46,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:28:46,805 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:28:46,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46 WrapperNode [2021-03-10 17:28:46,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:28:46,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:28:46,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:28:46,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:28:46,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:28:46,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:28:46,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:28:46,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:28:46,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (1/1) ... [2021-03-10 17:28:46,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:28:46,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:28:46,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:28:46,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:28:46,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (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 [2021-03-10 17:28:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:28:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:28:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:28:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:28:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:28:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:28:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:28:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:28:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:28:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:28:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:28:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:28:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:28:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:28:46,965 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:28:47,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:28:47,300 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:28:47,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:28:47 BoogieIcfgContainer [2021-03-10 17:28:47,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:28:47,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:28:47,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:28:47,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:28:47,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:28:46" (1/3) ... [2021-03-10 17:28:47,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc967a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:28:47, skipping insertion in model container [2021-03-10 17:28:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:46" (2/3) ... [2021-03-10 17:28:47,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc967a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:28:47, skipping insertion in model container [2021-03-10 17:28:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:28:47" (3/3) ... [2021-03-10 17:28:47,307 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2021-03-10 17:28:47,311 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:28:47,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:28:47,315 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:28:47,315 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:28:47,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:47,364 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:28:47,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:28:47,388 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:28:47,388 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:28:47,388 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:28:47,388 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:28:47,389 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:28:47,389 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:28:47,389 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:28:47,389 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:28:47,395 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:28:47,887 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:28:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:28:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:28:47,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:47,954 INFO L519 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] [2021-03-10 17:28:47,954 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:47,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-03-10 17:28:47,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:47,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505992234] [2021-03-10 17:28:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505992234] [2021-03-10 17:28:48,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:48,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:48,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600697237] [2021-03-10 17:28:48,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:48,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:48,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:48,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:48,302 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:28:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:48,679 INFO L93 Difference]: Finished difference Result 14390 states and 49201 transitions. [2021-03-10 17:28:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:28:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:28:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:48,709 INFO L225 Difference]: With dead ends: 14390 [2021-03-10 17:28:48,709 INFO L226 Difference]: Without dead ends: 3445 [2021-03-10 17:28:48,710 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:28:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2021-03-10 17:28:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 2965. [2021-03-10 17:28:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 3.282388663967611) internal successors, (9729), 2964 states have internal predecessors, (9729), 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) [2021-03-10 17:28:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 9729 transitions. [2021-03-10 17:28:48,835 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 9729 transitions. Word has length 40 [2021-03-10 17:28:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:48,836 INFO L480 AbstractCegarLoop]: Abstraction has 2965 states and 9729 transitions. [2021-03-10 17:28:48,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:28:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 9729 transitions. [2021-03-10 17:28:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:28:48,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:48,842 INFO L519 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] [2021-03-10 17:28:48,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:28:48,842 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1030148587, now seen corresponding path program 1 times [2021-03-10 17:28:48,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:48,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261859502] [2021-03-10 17:28:48,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:48,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261859502] [2021-03-10 17:28:48,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:48,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:48,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958667882] [2021-03-10 17:28:48,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:48,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:48,952 INFO L87 Difference]: Start difference. First operand 2965 states and 9729 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-03-10 17:28:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:49,113 INFO L93 Difference]: Finished difference Result 5286 states and 17174 transitions. [2021-03-10 17:28:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:28:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 [2021-03-10 17:28:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:49,128 INFO L225 Difference]: With dead ends: 5286 [2021-03-10 17:28:49,128 INFO L226 Difference]: Without dead ends: 3011 [2021-03-10 17:28:49,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:28:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-03-10 17:28:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2599. [2021-03-10 17:28:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2598 states have (on average 3.212471131639723) internal successors, (8346), 2598 states have internal predecessors, (8346), 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) [2021-03-10 17:28:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 8346 transitions. [2021-03-10 17:28:49,196 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 8346 transitions. Word has length 45 [2021-03-10 17:28:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:49,196 INFO L480 AbstractCegarLoop]: Abstraction has 2599 states and 8346 transitions. [2021-03-10 17:28:49,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-03-10 17:28:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 8346 transitions. [2021-03-10 17:28:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:28:49,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:49,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:28:49,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:28:49,202 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:49,202 INFO L82 PathProgramCache]: Analyzing trace with hash -273703259, now seen corresponding path program 1 times [2021-03-10 17:28:49,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:49,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231553993] [2021-03-10 17:28:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:49,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231553993] [2021-03-10 17:28:49,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:49,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490227762] [2021-03-10 17:28:49,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:49,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:49,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:49,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:49,325 INFO L87 Difference]: Start difference. First operand 2599 states and 8346 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:49,485 INFO L93 Difference]: Finished difference Result 5095 states and 16170 transitions. [2021-03-10 17:28:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:28:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 17:28:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:49,496 INFO L225 Difference]: With dead ends: 5095 [2021-03-10 17:28:49,496 INFO L226 Difference]: Without dead ends: 2723 [2021-03-10 17:28:49,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-03-10 17:28:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-03-10 17:28:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1891. [2021-03-10 17:28:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 3.1206349206349207) internal successors, (5898), 1890 states have internal predecessors, (5898), 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) [2021-03-10 17:28:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 5898 transitions. [2021-03-10 17:28:49,554 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 5898 transitions. Word has length 46 [2021-03-10 17:28:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:49,556 INFO L480 AbstractCegarLoop]: Abstraction has 1891 states and 5898 transitions. [2021-03-10 17:28:49,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 5898 transitions. [2021-03-10 17:28:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:28:49,560 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:49,560 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:28:49,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:28:49,560 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1754830538, now seen corresponding path program 1 times [2021-03-10 17:28:49,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:49,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331967016] [2021-03-10 17:28:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:49,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331967016] [2021-03-10 17:28:49,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:49,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:28:49,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377629040] [2021-03-10 17:28:49,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:28:49,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:49,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:28:49,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:28:49,661 INFO L87 Difference]: Start difference. First operand 1891 states and 5898 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:49,751 INFO L93 Difference]: Finished difference Result 2444 states and 7556 transitions. [2021-03-10 17:28:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:28:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:28:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:49,758 INFO L225 Difference]: With dead ends: 2444 [2021-03-10 17:28:49,758 INFO L226 Difference]: Without dead ends: 1704 [2021-03-10 17:28:49,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:28:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-03-10 17:28:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-03-10 17:28:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.094539048737522) internal successors, (5270), 1703 states have internal predecessors, (5270), 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) [2021-03-10 17:28:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5270 transitions. [2021-03-10 17:28:49,786 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5270 transitions. Word has length 48 [2021-03-10 17:28:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:49,787 INFO L480 AbstractCegarLoop]: Abstraction has 1704 states and 5270 transitions. [2021-03-10 17:28:49,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5270 transitions. [2021-03-10 17:28:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:28:49,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:49,790 INFO L519 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] [2021-03-10 17:28:49,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:28:49,790 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:49,790 INFO L82 PathProgramCache]: Analyzing trace with hash -494502633, now seen corresponding path program 1 times [2021-03-10 17:28:49,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:49,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833850504] [2021-03-10 17:28:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:49,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833850504] [2021-03-10 17:28:49,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:49,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:49,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826265218] [2021-03-10 17:28:49,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:49,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:49,891 INFO L87 Difference]: Start difference. First operand 1704 states and 5270 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) [2021-03-10 17:28:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:50,030 INFO L93 Difference]: Finished difference Result 1914 states and 5812 transitions. [2021-03-10 17:28:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:28:50,031 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 [2021-03-10 17:28:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:50,039 INFO L225 Difference]: With dead ends: 1914 [2021-03-10 17:28:50,039 INFO L226 Difference]: Without dead ends: 1314 [2021-03-10 17:28:50,039 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:28:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-03-10 17:28:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-03-10 17:28:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 2.993145468392993) internal successors, (3930), 1313 states have internal predecessors, (3930), 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) [2021-03-10 17:28:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 3930 transitions. [2021-03-10 17:28:50,061 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 3930 transitions. Word has length 49 [2021-03-10 17:28:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:50,061 INFO L480 AbstractCegarLoop]: Abstraction has 1314 states and 3930 transitions. [2021-03-10 17:28:50,061 INFO L481 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) [2021-03-10 17:28:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 3930 transitions. [2021-03-10 17:28:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:28:50,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:50,063 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:28:50,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:28:50,064 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1238647632, now seen corresponding path program 1 times [2021-03-10 17:28:50,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:50,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325859227] [2021-03-10 17:28:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:50,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325859227] [2021-03-10 17:28:50,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:50,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:50,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990264966] [2021-03-10 17:28:50,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:50,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:50,141 INFO L87 Difference]: Start difference. First operand 1314 states and 3930 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:50,248 INFO L93 Difference]: Finished difference Result 1143 states and 3297 transitions. [2021-03-10 17:28:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:28:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-03-10 17:28:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:50,252 INFO L225 Difference]: With dead ends: 1143 [2021-03-10 17:28:50,252 INFO L226 Difference]: Without dead ends: 783 [2021-03-10 17:28:50,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:28:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-03-10 17:28:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 751. [2021-03-10 17:28:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.752) internal successors, (2064), 750 states have internal predecessors, (2064), 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) [2021-03-10 17:28:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2064 transitions. [2021-03-10 17:28:50,264 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2064 transitions. Word has length 50 [2021-03-10 17:28:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:50,264 INFO L480 AbstractCegarLoop]: Abstraction has 751 states and 2064 transitions. [2021-03-10 17:28:50,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2064 transitions. [2021-03-10 17:28:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:28:50,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:50,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:28:50,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:28:50,266 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash 339231951, now seen corresponding path program 1 times [2021-03-10 17:28:50,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:50,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523148154] [2021-03-10 17:28:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:28:50,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523148154] [2021-03-10 17:28:50,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:50,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:50,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187204458] [2021-03-10 17:28:50,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:50,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:50,367 INFO L87 Difference]: Start difference. First operand 751 states and 2064 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:50,445 INFO L93 Difference]: Finished difference Result 729 states and 1998 transitions. [2021-03-10 17:28:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:28:50,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-03-10 17:28:50,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:50,445 INFO L225 Difference]: With dead ends: 729 [2021-03-10 17:28:50,445 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:28:50,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:28:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:28:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:28:50,447 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) [2021-03-10 17:28:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:28:50,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-03-10 17:28:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:50,447 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:28:50,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:28:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:28:50,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:28:50,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:28:50,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:28:50 BasicIcfg [2021-03-10 17:28:50,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:28:50,453 INFO L168 Benchmark]: Toolchain (without parser) took 3990.54 ms. Allocated memory was 318.8 MB in the beginning and 415.2 MB in the end (delta: 96.5 MB). Free memory was 282.5 MB in the beginning and 308.2 MB in the end (delta: -25.7 MB). Peak memory consumption was 73.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:50,455 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 318.8 MB. Free memory is still 300.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:28:50,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.06 ms. Allocated memory is still 318.8 MB. Free memory was 281.8 MB in the beginning and 283.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:50,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 318.8 MB. Free memory was 283.2 MB in the beginning and 281.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:50,465 INFO L168 Benchmark]: Boogie Preprocessor took 37.40 ms. Allocated memory is still 318.8 MB. Free memory was 281.1 MB in the beginning and 280.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:28:50,465 INFO L168 Benchmark]: RCFGBuilder took 409.97 ms. Allocated memory is still 318.8 MB. Free memory was 280.1 MB in the beginning and 257.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:50,466 INFO L168 Benchmark]: TraceAbstraction took 3148.42 ms. Allocated memory was 318.8 MB in the beginning and 415.2 MB in the end (delta: 96.5 MB). Free memory was 256.0 MB in the beginning and 308.2 MB in the end (delta: -52.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:50,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 318.8 MB. Free memory is still 300.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 342.06 ms. Allocated memory is still 318.8 MB. Free memory was 281.8 MB in the beginning and 283.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 318.8 MB. Free memory was 283.2 MB in the beginning and 281.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 37.40 ms. Allocated memory is still 318.8 MB. Free memory was 281.1 MB in the beginning and 280.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 409.97 ms. Allocated memory is still 318.8 MB. Free memory was 280.1 MB in the beginning and 257.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3148.42 ms. Allocated memory was 318.8 MB in the beginning and 415.2 MB in the end (delta: 96.5 MB). Free memory was 256.0 MB in the beginning and 308.2 MB in the end (delta: -52.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3061.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 84.2ms, AutomataDifference: 1223.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 498.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 654 SDtfs, 1211 SDslu, 2272 SDs, 0 SdLazy, 319 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 741.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 302.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 1756 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.8ms SsaConstructionTime, 158.9ms SatisfiabilityAnalysisTime, 601.2ms InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...