/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:26:38,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:26:38,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:26:38,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:26:38,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:26:38,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:26:38,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:26:38,209 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 [2021-05-21 17:26:38,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:26:38,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:26:38,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:26:38,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:26:38,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:26:38,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:26:38,229 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:26:38,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:26:38,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:26:38,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:26:38,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:26:38,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:26:38,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:26:38,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:26:38,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:26:38,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:26:38,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:26:38,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:26:38,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:26:38,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:26:38,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:26:38,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:26:38,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:26:38,489 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:26:38,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-05-21 17:26:38,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e0bd618/09c727c9e8ad49d39ccebbc781ecadc8/FLAG3cce1d463 [2021-05-21 17:26:38,963 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:26:38,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-05-21 17:26:38,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e0bd618/09c727c9e8ad49d39ccebbc781ecadc8/FLAG3cce1d463 [2021-05-21 17:26:39,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e0bd618/09c727c9e8ad49d39ccebbc781ecadc8 [2021-05-21 17:26:39,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:26:39,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:26:39,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:26:39,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:26:39,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:26:39,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570127f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39, skipping insertion in model container [2021-05-21 17:26:39,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:26:39,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:26:39,411 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-05-21 17:26:39,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:26:39,522 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:26:39,529 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-05-21 17:26:39,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:26:39,585 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:26:39,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39 WrapperNode [2021-05-21 17:26:39,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:26:39,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:26:39,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:26:39,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:26:39,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:26:39,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:26:39,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:26:39,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:26:39,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (1/1) ... [2021-05-21 17:26:39,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:26:39,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:26:39,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:26:39,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:26:39,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (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 [2021-05-21 17:26:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:26:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:26:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:26:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:26:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:26:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:26:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:26:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:26:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:26:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:26:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:26:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:26:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:26:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:26:39,699 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:26:40,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:26:40,016 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:26:40,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:26:40 BoogieIcfgContainer [2021-05-21 17:26:40,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:26:40,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:26:40,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:26:40,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:26:40,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:26:39" (1/3) ... [2021-05-21 17:26:40,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2bd52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:26:40, skipping insertion in model container [2021-05-21 17:26:40,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:39" (2/3) ... [2021-05-21 17:26:40,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2bd52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:26:40, skipping insertion in model container [2021-05-21 17:26:40,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:26:40" (3/3) ... [2021-05-21 17:26:40,022 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-05-21 17:26:40,027 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:26:40,027 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:26:40,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:26:40,028 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:26:40,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,079 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,079 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:40,087 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:26:40,101 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:26:40,122 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:26:40,123 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:26:40,123 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:26:40,123 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:26:40,123 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:26:40,123 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:26:40,123 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:26:40,123 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:26:40,134 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-05-21 17:26:40,535 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 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) [2021-05-21 17:26:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 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) [2021-05-21 17:26:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-21 17:26:40,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:40,597 INFO L521 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] [2021-05-21 17:26:40,597 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 292083127, now seen corresponding path program 1 times [2021-05-21 17:26:40,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:40,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622928995] [2021-05-21 17:26:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:40,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:40,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622928995] [2021-05-21 17:26:40,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622928995] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:40,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:40,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:40,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742843988] [2021-05-21 17:26:40,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:40,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:40,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:40,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:40,993 INFO L87 Difference]: Start difference. First operand has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.833333333333333) 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) [2021-05-21 17:26:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:41,305 INFO L93 Difference]: Finished difference Result 17929 states and 62892 transitions. [2021-05-21 17:26:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:41,307 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 [2021-05-21 17:26:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:41,344 INFO L225 Difference]: With dead ends: 17929 [2021-05-21 17:26:41,344 INFO L226 Difference]: Without dead ends: 5742 [2021-05-21 17:26:41,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 212.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2021-05-21 17:26:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5094. [2021-05-21 17:26:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 3.297663459650501) internal successors, (16795), 5093 states have internal predecessors, (16795), 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) [2021-05-21 17:26:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 16795 transitions. [2021-05-21 17:26:41,661 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 16795 transitions. Word has length 47 [2021-05-21 17:26:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:41,662 INFO L482 AbstractCegarLoop]: Abstraction has 5094 states and 16795 transitions. [2021-05-21 17:26:41,662 INFO L483 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) [2021-05-21 17:26:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 16795 transitions. [2021-05-21 17:26:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 17:26:41,669 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:41,670 INFO L521 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] [2021-05-21 17:26:41,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:26:41,670 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1989202966, now seen corresponding path program 1 times [2021-05-21 17:26:41,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:41,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587850420] [2021-05-21 17:26:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:41,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:41,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587850420] [2021-05-21 17:26:41,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587850420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:41,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:41,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:41,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31462488] [2021-05-21 17:26:41,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:41,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:41,829 INFO L87 Difference]: Start difference. First operand 5094 states and 16795 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:41,970 INFO L93 Difference]: Finished difference Result 6054 states and 19858 transitions. [2021-05-21 17:26:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-05-21 17:26:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:41,991 INFO L225 Difference]: With dead ends: 6054 [2021-05-21 17:26:41,991 INFO L226 Difference]: Without dead ends: 4794 [2021-05-21 17:26:41,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2021-05-21 17:26:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4730. [2021-05-21 17:26:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 3.2681327976316346) internal successors, (15455), 4729 states have internal predecessors, (15455), 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) [2021-05-21 17:26:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 15455 transitions. [2021-05-21 17:26:42,140 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 15455 transitions. Word has length 49 [2021-05-21 17:26:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:42,140 INFO L482 AbstractCegarLoop]: Abstraction has 4730 states and 15455 transitions. [2021-05-21 17:26:42,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 15455 transitions. [2021-05-21 17:26:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 17:26:42,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:42,149 INFO L521 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] [2021-05-21 17:26:42,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:26:42,149 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -514663752, now seen corresponding path program 1 times [2021-05-21 17:26:42,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:42,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841737755] [2021-05-21 17:26:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:42,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:42,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841737755] [2021-05-21 17:26:42,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841737755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:42,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:42,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:42,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468838446] [2021-05-21 17:26:42,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:42,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:42,285 INFO L87 Difference]: Start difference. First operand 4730 states and 15455 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:42,436 INFO L93 Difference]: Finished difference Result 5530 states and 18000 transitions. [2021-05-21 17:26:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-05-21 17:26:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:42,456 INFO L225 Difference]: With dead ends: 5530 [2021-05-21 17:26:42,456 INFO L226 Difference]: Without dead ends: 4550 [2021-05-21 17:26:42,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-05-21 17:26:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4486. [2021-05-21 17:26:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4485 states have (on average 3.2452619843924193) internal successors, (14555), 4485 states have internal predecessors, (14555), 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) [2021-05-21 17:26:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 14555 transitions. [2021-05-21 17:26:42,563 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 14555 transitions. Word has length 49 [2021-05-21 17:26:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:42,563 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 14555 transitions. [2021-05-21 17:26:42,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 14555 transitions. [2021-05-21 17:26:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 17:26:42,570 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:42,570 INFO L521 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] [2021-05-21 17:26:42,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:26:42,571 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:42,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:42,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1670070953, now seen corresponding path program 1 times [2021-05-21 17:26:42,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:42,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906205072] [2021-05-21 17:26:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:42,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:42,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906205072] [2021-05-21 17:26:42,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906205072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:42,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:42,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:42,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11780962] [2021-05-21 17:26:42,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:42,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:42,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:42,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:42,649 INFO L87 Difference]: Start difference. First operand 4486 states and 14555 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:42,806 INFO L93 Difference]: Finished difference Result 5126 states and 16582 transitions. [2021-05-21 17:26:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:42,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-05-21 17:26:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:42,818 INFO L225 Difference]: With dead ends: 5126 [2021-05-21 17:26:42,818 INFO L226 Difference]: Without dead ends: 4426 [2021-05-21 17:26:42,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-05-21 17:26:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4334. [2021-05-21 17:26:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.2351719363027924) internal successors, (14018), 4333 states have internal predecessors, (14018), 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) [2021-05-21 17:26:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14018 transitions. [2021-05-21 17:26:42,903 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14018 transitions. Word has length 51 [2021-05-21 17:26:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:42,903 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14018 transitions. [2021-05-21 17:26:42,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14018 transitions. [2021-05-21 17:26:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:26:42,910 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:42,911 INFO L521 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] [2021-05-21 17:26:42,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:26:42,911 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:42,911 INFO L82 PathProgramCache]: Analyzing trace with hash -717898673, now seen corresponding path program 1 times [2021-05-21 17:26:42,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:42,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137468234] [2021-05-21 17:26:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:42,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:42,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137468234] [2021-05-21 17:26:42,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137468234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:42,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:42,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:42,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526005722] [2021-05-21 17:26:42,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:42,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:42,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:42,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:42,978 INFO L87 Difference]: Start difference. First operand 4334 states and 14018 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:43,115 INFO L93 Difference]: Finished difference Result 6274 states and 19953 transitions. [2021-05-21 17:26:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 [2021-05-21 17:26:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:43,128 INFO L225 Difference]: With dead ends: 6274 [2021-05-21 17:26:43,129 INFO L226 Difference]: Without dead ends: 4694 [2021-05-21 17:26:43,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-05-21 17:26:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4030. [2021-05-21 17:26:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4029 states have (on average 3.166790766939687) internal successors, (12759), 4029 states have internal predecessors, (12759), 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) [2021-05-21 17:26:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 12759 transitions. [2021-05-21 17:26:43,237 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 12759 transitions. Word has length 52 [2021-05-21 17:26:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:43,237 INFO L482 AbstractCegarLoop]: Abstraction has 4030 states and 12759 transitions. [2021-05-21 17:26:43,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 12759 transitions. [2021-05-21 17:26:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:26:43,244 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:43,244 INFO L521 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] [2021-05-21 17:26:43,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:26:43,245 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash 399864681, now seen corresponding path program 1 times [2021-05-21 17:26:43,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:43,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207198551] [2021-05-21 17:26:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:43,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:43,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207198551] [2021-05-21 17:26:43,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207198551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:43,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:43,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:43,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219642033] [2021-05-21 17:26:43,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:43,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:43,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:43,315 INFO L87 Difference]: Start difference. First operand 4030 states and 12759 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:43,395 INFO L93 Difference]: Finished difference Result 5830 states and 18337 transitions. [2021-05-21 17:26:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:43,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 [2021-05-21 17:26:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:43,406 INFO L225 Difference]: With dead ends: 5830 [2021-05-21 17:26:43,406 INFO L226 Difference]: Without dead ends: 4390 [2021-05-21 17:26:43,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2021-05-21 17:26:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 3698. [2021-05-21 17:26:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 3.1317284284555043) internal successors, (11578), 3697 states have internal predecessors, (11578), 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) [2021-05-21 17:26:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 11578 transitions. [2021-05-21 17:26:43,476 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 11578 transitions. Word has length 52 [2021-05-21 17:26:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:43,477 INFO L482 AbstractCegarLoop]: Abstraction has 3698 states and 11578 transitions. [2021-05-21 17:26:43,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 11578 transitions. [2021-05-21 17:26:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:26:43,482 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:43,482 INFO L521 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] [2021-05-21 17:26:43,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:26:43,482 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 936249593, now seen corresponding path program 1 times [2021-05-21 17:26:43,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:43,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198229525] [2021-05-21 17:26:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:43,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:43,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198229525] [2021-05-21 17:26:43,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198229525] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:43,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:43,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:43,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802416793] [2021-05-21 17:26:43,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:43,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:43,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:43,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:43,572 INFO L87 Difference]: Start difference. First operand 3698 states and 11578 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:43,712 INFO L93 Difference]: Finished difference Result 5498 states and 17156 transitions. [2021-05-21 17:26:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:43,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 [2021-05-21 17:26:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:43,725 INFO L225 Difference]: With dead ends: 5498 [2021-05-21 17:26:43,726 INFO L226 Difference]: Without dead ends: 4058 [2021-05-21 17:26:43,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2021-05-21 17:26:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3394. [2021-05-21 17:26:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.09755378720896) internal successors, (10510), 3393 states have internal predecessors, (10510), 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) [2021-05-21 17:26:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 10510 transitions. [2021-05-21 17:26:43,796 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 10510 transitions. Word has length 52 [2021-05-21 17:26:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:43,796 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 10510 transitions. [2021-05-21 17:26:43,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2021-05-21 17:26:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 10510 transitions. [2021-05-21 17:26:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 17:26:43,801 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:43,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:26:43,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:26:43,802 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash 687458870, now seen corresponding path program 1 times [2021-05-21 17:26:43,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:43,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680060797] [2021-05-21 17:26:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:43,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:43,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680060797] [2021-05-21 17:26:43,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680060797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:43,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:43,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:43,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545920406] [2021-05-21 17:26:43,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:43,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:43,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:43,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:43,877 INFO L87 Difference]: Start difference. First operand 3394 states and 10510 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:43,959 INFO L93 Difference]: Finished difference Result 4147 states and 12611 transitions. [2021-05-21 17:26:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-05-21 17:26:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:43,966 INFO L225 Difference]: With dead ends: 4147 [2021-05-21 17:26:43,967 INFO L226 Difference]: Without dead ends: 3028 [2021-05-21 17:26:43,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-05-21 17:26:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3028. [2021-05-21 17:26:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 3.028741328047572) internal successors, (9168), 3027 states have internal predecessors, (9168), 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) [2021-05-21 17:26:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 9168 transitions. [2021-05-21 17:26:44,019 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 9168 transitions. Word has length 53 [2021-05-21 17:26:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:44,019 INFO L482 AbstractCegarLoop]: Abstraction has 3028 states and 9168 transitions. [2021-05-21 17:26:44,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 9168 transitions. [2021-05-21 17:26:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:26:44,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:44,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:26:44,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 17:26:44,024 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1246274999, now seen corresponding path program 1 times [2021-05-21 17:26:44,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:44,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538801939] [2021-05-21 17:26:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:44,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:44,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538801939] [2021-05-21 17:26:44,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538801939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:44,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:44,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:26:44,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372580464] [2021-05-21 17:26:44,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:26:44,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:44,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:26:44,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:26:44,107 INFO L87 Difference]: Start difference. First operand 3028 states and 9168 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-05-21 17:26:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:44,203 INFO L93 Difference]: Finished difference Result 3001 states and 8835 transitions. [2021-05-21 17:26:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:26:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-05-21 17:26:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:44,207 INFO L225 Difference]: With dead ends: 3001 [2021-05-21 17:26:44,207 INFO L226 Difference]: Without dead ends: 1976 [2021-05-21 17:26:44,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:26:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-05-21 17:26:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2021-05-21 17:26:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 2.869367088607595) internal successors, (5667), 1975 states have internal predecessors, (5667), 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) [2021-05-21 17:26:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 5667 transitions. [2021-05-21 17:26:44,239 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 5667 transitions. Word has length 55 [2021-05-21 17:26:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:44,239 INFO L482 AbstractCegarLoop]: Abstraction has 1976 states and 5667 transitions. [2021-05-21 17:26:44,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-05-21 17:26:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 5667 transitions. [2021-05-21 17:26:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:26:44,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:44,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:26:44,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 17:26:44,242 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:44,243 INFO L82 PathProgramCache]: Analyzing trace with hash 297892472, now seen corresponding path program 1 times [2021-05-21 17:26:44,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:44,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590739459] [2021-05-21 17:26:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:26:44,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:44,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590739459] [2021-05-21 17:26:44,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590739459] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:44,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:44,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:26:44,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012327639] [2021-05-21 17:26:44,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:26:44,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:26:44,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:26:44,327 INFO L87 Difference]: Start difference. First operand 1976 states and 5667 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-05-21 17:26:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:44,404 INFO L93 Difference]: Finished difference Result 1409 states and 3912 transitions. [2021-05-21 17:26:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 17:26:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 57 [2021-05-21 17:26:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:44,404 INFO L225 Difference]: With dead ends: 1409 [2021-05-21 17:26:44,404 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:26:44,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:26:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:26:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:26:44,405 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) [2021-05-21 17:26:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:26:44,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-05-21 17:26:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:44,405 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:26:44,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-05-21 17:26:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:26:44,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:26:44,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 17:26:44,407 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:26:44,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:26:44 BasicIcfg [2021-05-21 17:26:44,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:26:44,409 INFO L168 Benchmark]: Toolchain (without parser) took 5126.38 ms. Allocated memory was 348.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 310.3 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 102.8 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,410 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 348.1 MB. Free memory was 328.6 MB in the beginning and 328.5 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:26:44,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.91 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 310.3 MB in the end (delta: -265.5 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.34 ms. Allocated memory is still 348.1 MB. Free memory was 310.3 MB in the beginning and 308.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,410 INFO L168 Benchmark]: Boogie Preprocessor took 14.13 ms. Allocated memory is still 348.1 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,410 INFO L168 Benchmark]: RCFGBuilder took 390.52 ms. Allocated memory is still 348.1 MB. Free memory was 306.1 MB in the beginning and 282.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,411 INFO L168 Benchmark]: TraceAbstraction took 4390.76 ms. Allocated memory was 348.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 282.0 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 76.4 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:44,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 348.1 MB. Free memory was 328.6 MB in the beginning and 328.5 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 300.91 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 310.3 MB in the end (delta: -265.5 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.34 ms. Allocated memory is still 348.1 MB. Free memory was 310.3 MB in the beginning and 308.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.13 ms. Allocated memory is still 348.1 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 390.52 ms. Allocated memory is still 348.1 MB. Free memory was 306.1 MB in the beginning and 282.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4390.76 ms. Allocated memory was 348.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 282.0 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 76.4 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4285.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 113.8ms, AutomataDifference: 1551.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 412.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1133 SDtfs, 1347 SDslu, 3423 SDs, 0 SdLazy, 323 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 239.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1077.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9330occurred in iteration=0, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 973.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2888 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 180.0ms SatisfiabilityAnalysisTime, 883.8ms InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 1683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...