/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:30:14,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:30:14,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:30:14,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:30:14,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:30:14,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:30:14,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:30:14,328 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 17:30:14,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:30:14,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:30:14,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:30:14,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:30:14,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:30:14,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:30:14,368 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:30:14,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:30:14,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:30:14,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:30:14,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:30:14,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:30:14,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:30:14,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:30:14,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:30:14,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:30:14,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:30:14,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:30:14,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:30:14,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:30:14,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:30:14,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:30:14,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:30:14,372 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:30:14,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:30:14,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:30:14,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:30:14,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:30:14,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:30:14,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:30:14,742 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:30:14,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-03-10 17:30:14,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39fa62d3/fcae5955979b42508487eff03d1d0253/FLAGfd99d16da [2021-03-10 17:30:15,277 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:30:15,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-03-10 17:30:15,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39fa62d3/fcae5955979b42508487eff03d1d0253/FLAGfd99d16da [2021-03-10 17:30:15,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39fa62d3/fcae5955979b42508487eff03d1d0253 [2021-03-10 17:30:15,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:30:15,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:30:15,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:15,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:30:15,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:30:15,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:15" (1/1) ... [2021-03-10 17:30:15,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d42a2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:15, skipping insertion in model container [2021-03-10 17:30:15,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:15" (1/1) ... [2021-03-10 17:30:15,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:30:15,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:30:15,783 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/safe013_tso.oepc.i[950,963] [2021-03-10 17:30:15,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:15,899 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:30:15,915 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/safe013_tso.oepc.i[950,963] [2021-03-10 17:30:15,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:16,058 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:30:16,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16 WrapperNode [2021-03-10 17:30:16,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:16,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:16,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:30:16,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:30:16,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:16,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:30:16,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:30:16,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:30:16,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (1/1) ... [2021-03-10 17:30:16,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:30:16,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:30:16,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:30:16,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:30:16,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (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 17:30:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:30:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:30:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:30:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:30:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:30:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:30:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:30:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:30:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:30:16,219 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 17:30:16,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:30:16,504 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:30:16,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:16 BoogieIcfgContainer [2021-03-10 17:30:16,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:30:16,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:30:16,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:30:16,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:30:16,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:30:15" (1/3) ... [2021-03-10 17:30:16,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642571bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:16, skipping insertion in model container [2021-03-10 17:30:16,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:16" (2/3) ... [2021-03-10 17:30:16,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642571bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:16, skipping insertion in model container [2021-03-10 17:30:16,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:16" (3/3) ... [2021-03-10 17:30:16,512 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2021-03-10 17:30:16,517 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:30:16,517 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:30:16,521 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:30:16,522 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,551 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,551 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:16,564 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:30:16,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:30:16,594 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:30:16,594 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:30:16,594 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:30:16,594 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:30:16,594 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:30:16,594 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:30:16,594 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:30:16,594 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:30:16,603 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:30:17,146 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 17:30:17,190 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 17:30:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:30:17,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:17,236 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 17:30:17,236 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:17,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1193660471, now seen corresponding path program 1 times [2021-03-10 17:30:17,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:17,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987815406] [2021-03-10 17:30:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:17,702 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 17:30:17,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987815406] [2021-03-10 17:30:17,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:17,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:17,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907861444] [2021-03-10 17:30:17,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:17,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:17,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:17,746 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 17:30:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:18,293 INFO L93 Difference]: Finished difference Result 17030 states and 58588 transitions. [2021-03-10 17:30:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:18,294 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 17:30:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:18,338 INFO L225 Difference]: With dead ends: 17030 [2021-03-10 17:30:18,338 INFO L226 Difference]: Without dead ends: 5151 [2021-03-10 17:30:18,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 284.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-03-10 17:30:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 4311. [2021-03-10 17:30:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4310 states have (on average 3.3477958236658933) internal successors, (14429), 4310 states have internal predecessors, (14429), 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 17:30:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 14429 transitions. [2021-03-10 17:30:18,655 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 14429 transitions. Word has length 40 [2021-03-10 17:30:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:18,657 INFO L480 AbstractCegarLoop]: Abstraction has 4311 states and 14429 transitions. [2021-03-10 17:30:18,658 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 17:30:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 14429 transitions. [2021-03-10 17:30:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:30:18,668 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:18,669 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] [2021-03-10 17:30:18,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:30:18,674 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash 887484200, now seen corresponding path program 1 times [2021-03-10 17:30:18,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:18,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677365086] [2021-03-10 17:30:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:18,897 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 17:30:18,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677365086] [2021-03-10 17:30:18,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:18,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:18,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572155156] [2021-03-10 17:30:18,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:18,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:18,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:18,900 INFO L87 Difference]: Start difference. First operand 4311 states and 14429 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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) [2021-03-10 17:30:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:19,152 INFO L93 Difference]: Finished difference Result 6271 states and 20652 transitions. [2021-03-10 17:30:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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 [2021-03-10 17:30:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:19,180 INFO L225 Difference]: With dead ends: 6271 [2021-03-10 17:30:19,180 INFO L226 Difference]: Without dead ends: 4731 [2021-03-10 17:30:19,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-03-10 17:30:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3891. [2021-03-10 17:30:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3890 states have (on average 3.3287917737789203) internal successors, (12949), 3890 states have internal predecessors, (12949), 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 17:30:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 12949 transitions. [2021-03-10 17:30:19,306 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 12949 transitions. Word has length 42 [2021-03-10 17:30:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:19,307 INFO L480 AbstractCegarLoop]: Abstraction has 3891 states and 12949 transitions. [2021-03-10 17:30:19,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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) [2021-03-10 17:30:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 12949 transitions. [2021-03-10 17:30:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:30:19,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:19,315 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] [2021-03-10 17:30:19,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:30:19,315 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1880770807, now seen corresponding path program 1 times [2021-03-10 17:30:19,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:19,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791371443] [2021-03-10 17:30:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:19,462 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 17:30:19,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791371443] [2021-03-10 17:30:19,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:19,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:19,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328722454] [2021-03-10 17:30:19,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:19,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:19,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:19,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:19,465 INFO L87 Difference]: Start difference. First operand 3891 states and 12949 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:19,614 INFO L93 Difference]: Finished difference Result 5713 states and 18716 transitions. [2021-03-10 17:30:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:30:19,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 17:30:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:19,632 INFO L225 Difference]: With dead ends: 5713 [2021-03-10 17:30:19,632 INFO L226 Difference]: Without dead ends: 3102 [2021-03-10 17:30:19,632 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2021-03-10 17:30:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2622. [2021-03-10 17:30:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 3.1972529568866843) internal successors, (8380), 2621 states have internal predecessors, (8380), 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 17:30:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 8380 transitions. [2021-03-10 17:30:19,709 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 8380 transitions. Word has length 44 [2021-03-10 17:30:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:19,709 INFO L480 AbstractCegarLoop]: Abstraction has 2622 states and 8380 transitions. [2021-03-10 17:30:19,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 8380 transitions. [2021-03-10 17:30:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:30:19,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:19,715 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] [2021-03-10 17:30:19,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:30:19,715 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:19,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1407131030, now seen corresponding path program 1 times [2021-03-10 17:30:19,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:19,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189435218] [2021-03-10 17:30:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:19,783 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 17:30:19,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189435218] [2021-03-10 17:30:19,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:19,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:19,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143853307] [2021-03-10 17:30:19,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:19,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:19,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:19,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:19,785 INFO L87 Difference]: Start difference. First operand 2622 states and 8380 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) [2021-03-10 17:30:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:19,907 INFO L93 Difference]: Finished difference Result 3409 states and 10756 transitions. [2021-03-10 17:30:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:19,908 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 [2021-03-10 17:30:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:19,920 INFO L225 Difference]: With dead ends: 3409 [2021-03-10 17:30:19,920 INFO L226 Difference]: Without dead ends: 2393 [2021-03-10 17:30:19,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-03-10 17:30:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2021-03-10 17:30:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 2392 states have (on average 3.1475752508361206) internal successors, (7529), 2392 states have internal predecessors, (7529), 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 17:30:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 7529 transitions. [2021-03-10 17:30:19,988 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 7529 transitions. Word has length 47 [2021-03-10 17:30:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:19,989 INFO L480 AbstractCegarLoop]: Abstraction has 2393 states and 7529 transitions. [2021-03-10 17:30:19,989 INFO L481 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) [2021-03-10 17:30:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 7529 transitions. [2021-03-10 17:30:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:30:19,995 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:19,995 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 17:30:19,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:30:19,995 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:19,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1650146997, now seen corresponding path program 1 times [2021-03-10 17:30:19,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:19,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819571953] [2021-03-10 17:30:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:20,076 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 17:30:20,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819571953] [2021-03-10 17:30:20,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:20,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:20,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752600199] [2021-03-10 17:30:20,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:20,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:20,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:20,079 INFO L87 Difference]: Start difference. First operand 2393 states and 7529 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:20,217 INFO L93 Difference]: Finished difference Result 2621 states and 8035 transitions. [2021-03-10 17:30:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:30:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:30:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:20,225 INFO L225 Difference]: With dead ends: 2621 [2021-03-10 17:30:20,226 INFO L226 Difference]: Without dead ends: 1769 [2021-03-10 17:30:20,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:30:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-03-10 17:30:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1769. [2021-03-10 17:30:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 3.006787330316742) internal successors, (5316), 1768 states have internal predecessors, (5316), 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 17:30:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 5316 transitions. [2021-03-10 17:30:20,276 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 5316 transitions. Word has length 48 [2021-03-10 17:30:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:20,277 INFO L480 AbstractCegarLoop]: Abstraction has 1769 states and 5316 transitions. [2021-03-10 17:30:20,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 5316 transitions. [2021-03-10 17:30:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:30:20,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:20,281 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 17:30:20,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:30:20,282 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash -439255882, now seen corresponding path program 1 times [2021-03-10 17:30:20,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:20,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758256689] [2021-03-10 17:30:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:20,395 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 17:30:20,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758256689] [2021-03-10 17:30:20,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:20,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:20,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107585361] [2021-03-10 17:30:20,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:20,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:20,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:20,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:20,398 INFO L87 Difference]: Start difference. First operand 1769 states and 5316 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 17:30:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:20,543 INFO L93 Difference]: Finished difference Result 1517 states and 4422 transitions. [2021-03-10 17:30:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:30:20,544 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 17:30:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:20,550 INFO L225 Difference]: With dead ends: 1517 [2021-03-10 17:30:20,550 INFO L226 Difference]: Without dead ends: 777 [2021-03-10 17:30:20,551 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-03-10 17:30:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 745. [2021-03-10 17:30:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 2.807795698924731) internal successors, (2089), 744 states have internal predecessors, (2089), 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 17:30:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2089 transitions. [2021-03-10 17:30:20,566 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2089 transitions. Word has length 50 [2021-03-10 17:30:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:20,566 INFO L480 AbstractCegarLoop]: Abstraction has 745 states and 2089 transitions. [2021-03-10 17:30:20,566 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 17:30:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2089 transitions. [2021-03-10 17:30:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:30:20,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:20,569 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 17:30:20,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:30:20,569 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1507994129, now seen corresponding path program 1 times [2021-03-10 17:30:20,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:20,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076996919] [2021-03-10 17:30:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:20,695 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 17:30:20,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076996919] [2021-03-10 17:30:20,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:20,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:20,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958054143] [2021-03-10 17:30:20,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:20,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:20,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:20,704 INFO L87 Difference]: Start difference. First operand 745 states and 2089 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 17:30:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:20,792 INFO L93 Difference]: Finished difference Result 723 states and 2023 transitions. [2021-03-10 17:30:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:30:20,792 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 17:30:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:20,793 INFO L225 Difference]: With dead ends: 723 [2021-03-10 17:30:20,793 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:30:20,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:30:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:30:20,794 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 17:30:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:30:20,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-03-10 17:30:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:20,795 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:30:20,795 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 17:30:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:30:20,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:30:20,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:30:20,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:30:20 BasicIcfg [2021-03-10 17:30:20,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:30:20,801 INFO L168 Benchmark]: Toolchain (without parser) took 5205.30 ms. Allocated memory was 348.1 MB in the beginning and 784.3 MB in the end (delta: 436.2 MB). Free memory was 311.6 MB in the beginning and 625.5 MB in the end (delta: -313.9 MB). Peak memory consumption was 123.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,802 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 348.1 MB. Free memory was 329.5 MB in the beginning and 329.4 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:30:20,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.35 ms. Allocated memory is still 348.1 MB. Free memory was 311.0 MB in the beginning and 312.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.48 ms. Allocated memory is still 348.1 MB. Free memory was 312.5 MB in the beginning and 309.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,805 INFO L168 Benchmark]: Boogie Preprocessor took 35.50 ms. Allocated memory is still 348.1 MB. Free memory was 309.7 MB in the beginning and 308.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,805 INFO L168 Benchmark]: RCFGBuilder took 349.72 ms. Allocated memory is still 348.1 MB. Free memory was 308.3 MB in the beginning and 284.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,809 INFO L168 Benchmark]: TraceAbstraction took 4291.74 ms. Allocated memory was 348.1 MB in the beginning and 784.3 MB in the end (delta: 436.2 MB). Free memory was 283.1 MB in the beginning and 625.5 MB in the end (delta: -342.4 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:20,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 348.1 MB. Free memory was 329.5 MB in the beginning and 329.4 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 459.35 ms. Allocated memory is still 348.1 MB. Free memory was 311.0 MB in the beginning and 312.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.48 ms. Allocated memory is still 348.1 MB. Free memory was 312.5 MB in the beginning and 309.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.50 ms. Allocated memory is still 348.1 MB. Free memory was 309.7 MB in the beginning and 308.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 349.72 ms. Allocated memory is still 348.1 MB. Free memory was 308.3 MB in the beginning and 284.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4291.74 ms. Allocated memory was 348.1 MB in the beginning and 784.3 MB in the end (delta: 436.2 MB). Free memory was 283.1 MB in the beginning and 625.5 MB in the end (delta: -342.4 MB). Peak memory consumption was 94.9 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: 4203.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 120.9ms, AutomataDifference: 1616.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 552.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 653 SDtfs, 1280 SDslu, 2220 SDs, 0 SdLazy, 303 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 265.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1071.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 639.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 2192 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.5ms SsaConstructionTime, 185.3ms SatisfiabilityAnalysisTime, 893.0ms InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 1192 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...