/usr/bin/java -Xmx8000000000 -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/safe037_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:52:14,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:52:14,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:52:14,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:52:14,487 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 [2021-08-06 13:52:14,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:52:14,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:52:14,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:52:14,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:52:14,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:52:14,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:52:14,532 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:52:14,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:52:14,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:52:14,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:52:14,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:52:14,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:52:14,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:52:14,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:52:14,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:52:14,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:52:14,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:52:14,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:52:14,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:14,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:52:14,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:52:14,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:52:14,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:52:14,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:52:14,536 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:52:14,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:52:14,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:52:14,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:52:14,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:52:14,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:52:14,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:52:14,845 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:52:14,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2021-08-06 13:52:14,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ac17fb9/ac042bc3c65a4eada9357d4c5fa19089/FLAG0ac649f29 [2021-08-06 13:52:15,259 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:52:15,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2021-08-06 13:52:15,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ac17fb9/ac042bc3c65a4eada9357d4c5fa19089/FLAG0ac649f29 [2021-08-06 13:52:15,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ac17fb9/ac042bc3c65a4eada9357d4c5fa19089 [2021-08-06 13:52:15,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:52:15,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:52:15,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:15,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:52:15,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:52:15,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:15" (1/1) ... [2021-08-06 13:52:15,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284be4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:15, skipping insertion in model container [2021-08-06 13:52:15,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:15" (1/1) ... [2021-08-06 13:52:15,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:52:15,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:52:15,801 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/safe037_rmo.oepc.i[950,963] [2021-08-06 13:52:15,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:15,944 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:52:15,971 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/safe037_rmo.oepc.i[950,963] [2021-08-06 13:52:16,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:16,042 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:52:16,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16 WrapperNode [2021-08-06 13:52:16,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:16,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:16,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:52:16,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:52:16,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:16,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:52:16,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:52:16,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:52:16,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:52:16,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:52:16,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:52:16,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:52:16,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (1/1) ... [2021-08-06 13:52:16,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:52:16,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 13:52:16,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 13:52:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 13:52:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 13:52:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 13:52:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 13:52:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 13:52:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:52:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 13:52:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:52:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:52:16,188 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:52:16,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:52:16,559 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 13:52:16,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:16 BoogieIcfgContainer [2021-08-06 13:52:16,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:52:16,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:52:16,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:52:16,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:52:16,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:52:15" (1/3) ... [2021-08-06 13:52:16,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76195af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:16, skipping insertion in model container [2021-08-06 13:52:16,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:16" (2/3) ... [2021-08-06 13:52:16,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76195af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:16, skipping insertion in model container [2021-08-06 13:52:16,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:16" (3/3) ... [2021-08-06 13:52:16,567 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.oepc.i [2021-08-06 13:52:16,571 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:52:16,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:52:16,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 13:52:16,571 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:52:16,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,596 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,596 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:16,619 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 13:52:16,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 13:52:16,661 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 13:52:16,662 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 13:52:16,673 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-08-06 13:52:16,841 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-08-06 13:52:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-08-06 13:52:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 13:52:16,886 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:16,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:16,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:16,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:16,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2125126979, now seen corresponding path program 1 times [2021-08-06 13:52:16,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:16,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389329193] [2021-08-06 13:52:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:16,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:17,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:17,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389329193] [2021-08-06 13:52:17,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389329193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:17,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:17,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:17,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068175122] [2021-08-06 13:52:17,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:17,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:17,359 INFO L87 Difference]: Start difference. First operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:17,599 INFO L93 Difference]: Finished difference Result 6507 states and 21851 transitions. [2021-08-06 13:52:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:52:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-06 13:52:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:17,641 INFO L225 Difference]: With dead ends: 6507 [2021-08-06 13:52:17,642 INFO L226 Difference]: Without dead ends: 4513 [2021-08-06 13:52:17,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-08-06 13:52:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2021-08-06 13:52:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 3.3324468085106385) internal successors, (15036), 4512 states have internal predecessors, (15036), 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) [2021-08-06 13:52:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 15036 transitions. [2021-08-06 13:52:17,891 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 15036 transitions. Word has length 50 [2021-08-06 13:52:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:17,892 INFO L470 AbstractCegarLoop]: Abstraction has 4513 states and 15036 transitions. [2021-08-06 13:52:17,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 15036 transitions. [2021-08-06 13:52:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 13:52:17,907 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:17,910 INFO L512 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] [2021-08-06 13:52:17,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:52:17,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:17,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:17,913 INFO L82 PathProgramCache]: Analyzing trace with hash -259561983, now seen corresponding path program 1 times [2021-08-06 13:52:17,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:17,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768718653] [2021-08-06 13:52:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:17,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:18,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:18,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768718653] [2021-08-06 13:52:18,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768718653] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:18,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:18,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:52:18,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604004796] [2021-08-06 13:52:18,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:52:18,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:52:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:52:18,127 INFO L87 Difference]: Start difference. First operand 4513 states and 15036 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:18,302 INFO L93 Difference]: Finished difference Result 4045 states and 12969 transitions. [2021-08-06 13:52:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:52:18,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-06 13:52:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:18,315 INFO L225 Difference]: With dead ends: 4045 [2021-08-06 13:52:18,316 INFO L226 Difference]: Without dead ends: 2929 [2021-08-06 13:52:18,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:52:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-08-06 13:52:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2929. [2021-08-06 13:52:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.151639344262295) internal successors, (9228), 2928 states have internal predecessors, (9228), 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) [2021-08-06 13:52:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 9228 transitions. [2021-08-06 13:52:18,412 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 9228 transitions. Word has length 54 [2021-08-06 13:52:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:18,412 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 9228 transitions. [2021-08-06 13:52:18,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 9228 transitions. [2021-08-06 13:52:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 13:52:18,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:18,421 INFO L512 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, 1] [2021-08-06 13:52:18,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:52:18,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:18,422 INFO L82 PathProgramCache]: Analyzing trace with hash -237595841, now seen corresponding path program 1 times [2021-08-06 13:52:18,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:18,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673968789] [2021-08-06 13:52:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:18,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:18,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:18,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673968789] [2021-08-06 13:52:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673968789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:18,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:18,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 13:52:18,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612731918] [2021-08-06 13:52:18,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:52:18,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:52:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:52:18,521 INFO L87 Difference]: Start difference. First operand 2929 states and 9228 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-08-06 13:52:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:18,648 INFO L93 Difference]: Finished difference Result 2281 states and 7005 transitions. [2021-08-06 13:52:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:52:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-08-06 13:52:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:18,657 INFO L225 Difference]: With dead ends: 2281 [2021-08-06 13:52:18,657 INFO L226 Difference]: Without dead ends: 1741 [2021-08-06 13:52:18,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:52:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-08-06 13:52:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2021-08-06 13:52:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 3.027586206896552) internal successors, (5268), 1740 states have internal predecessors, (5268), 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) [2021-08-06 13:52:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 5268 transitions. [2021-08-06 13:52:18,694 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 5268 transitions. Word has length 58 [2021-08-06 13:52:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:18,695 INFO L470 AbstractCegarLoop]: Abstraction has 1741 states and 5268 transitions. [2021-08-06 13:52:18,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-08-06 13:52:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 5268 transitions. [2021-08-06 13:52:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-06 13:52:18,698 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:18,699 INFO L512 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, 1, 1, 1, 1, 1] [2021-08-06 13:52:18,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:52:18,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:18,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:18,699 INFO L82 PathProgramCache]: Analyzing trace with hash 638441341, now seen corresponding path program 1 times [2021-08-06 13:52:18,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:18,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728906917] [2021-08-06 13:52:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:18,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:18,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:18,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728906917] [2021-08-06 13:52:18,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728906917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:18,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:18,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:52:18,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792041441] [2021-08-06 13:52:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:52:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:52:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:52:18,834 INFO L87 Difference]: Start difference. First operand 1741 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:18,923 INFO L93 Difference]: Finished difference Result 2404 states and 7288 transitions. [2021-08-06 13:52:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 13:52:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-08-06 13:52:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:18,931 INFO L225 Difference]: With dead ends: 2404 [2021-08-06 13:52:18,931 INFO L226 Difference]: Without dead ends: 1713 [2021-08-06 13:52:18,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-08-06 13:52:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1485. [2021-08-06 13:52:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.967654986522911) internal successors, (4404), 1484 states have internal predecessors, (4404), 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) [2021-08-06 13:52:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4404 transitions. [2021-08-06 13:52:18,966 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4404 transitions. Word has length 62 [2021-08-06 13:52:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:18,966 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 4404 transitions. [2021-08-06 13:52:18,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4404 transitions. [2021-08-06 13:52:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-06 13:52:18,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:18,972 INFO L512 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, 1, 1, 1, 1, 1] [2021-08-06 13:52:18,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:52:18,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:18,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:18,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1342176095, now seen corresponding path program 2 times [2021-08-06 13:52:18,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:18,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417084569] [2021-08-06 13:52:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:18,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:19,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:19,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417084569] [2021-08-06 13:52:19,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417084569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:19,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:19,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:52:19,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529033261] [2021-08-06 13:52:19,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:52:19,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:52:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:52:19,118 INFO L87 Difference]: Start difference. First operand 1485 states and 4404 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:19,217 INFO L93 Difference]: Finished difference Result 2100 states and 6260 transitions. [2021-08-06 13:52:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 13:52:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-08-06 13:52:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:19,225 INFO L225 Difference]: With dead ends: 2100 [2021-08-06 13:52:19,225 INFO L226 Difference]: Without dead ends: 1301 [2021-08-06 13:52:19,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-08-06 13:52:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1121. [2021-08-06 13:52:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 2.9214285714285713) internal successors, (3272), 1120 states have internal predecessors, (3272), 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) [2021-08-06 13:52:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 3272 transitions. [2021-08-06 13:52:19,271 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 3272 transitions. Word has length 62 [2021-08-06 13:52:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:19,272 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 3272 transitions. [2021-08-06 13:52:19,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 3272 transitions. [2021-08-06 13:52:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-06 13:52:19,274 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:19,274 INFO L512 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, 1, 1, 1, 1, 1] [2021-08-06 13:52:19,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:52:19,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1040045983, now seen corresponding path program 3 times [2021-08-06 13:52:19,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:19,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884213872] [2021-08-06 13:52:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:19,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:19,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:19,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884213872] [2021-08-06 13:52:19,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884213872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:19,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:19,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 13:52:19,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189016665] [2021-08-06 13:52:19,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:52:19,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:52:19,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:52:19,410 INFO L87 Difference]: Start difference. First operand 1121 states and 3272 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:19,473 INFO L93 Difference]: Finished difference Result 1640 states and 4800 transitions. [2021-08-06 13:52:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 13:52:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 62 [2021-08-06 13:52:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:19,477 INFO L225 Difference]: With dead ends: 1640 [2021-08-06 13:52:19,477 INFO L226 Difference]: Without dead ends: 1002 [2021-08-06 13:52:19,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:52:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-08-06 13:52:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2021-08-06 13:52:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1001 states have (on average 2.8931068931068933) internal successors, (2896), 1001 states have internal predecessors, (2896), 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) [2021-08-06 13:52:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 2896 transitions. [2021-08-06 13:52:19,492 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 2896 transitions. Word has length 62 [2021-08-06 13:52:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:19,492 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 2896 transitions. [2021-08-06 13:52:19,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 2896 transitions. [2021-08-06 13:52:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-06 13:52:19,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:19,494 INFO L512 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, 1, 1, 1, 1, 1] [2021-08-06 13:52:19,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 13:52:19,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 13:52:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash 747653005, now seen corresponding path program 4 times [2021-08-06 13:52:19,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:19,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161929036] [2021-08-06 13:52:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:19,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:19,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:19,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161929036] [2021-08-06 13:52:19,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161929036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:19,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:19,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 13:52:19,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595131069] [2021-08-06 13:52:19,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:52:19,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:19,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:52:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:52:19,563 INFO L87 Difference]: Start difference. First operand 1002 states and 2896 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:19,611 INFO L93 Difference]: Finished difference Result 948 states and 2734 transitions. [2021-08-06 13:52:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 13:52:19,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-08-06 13:52:19,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:19,611 INFO L225 Difference]: With dead ends: 948 [2021-08-06 13:52:19,611 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 13:52:19,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 13:52:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 13:52:19,612 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) [2021-08-06 13:52:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 13:52:19,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-08-06 13:52:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:19,612 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 13:52:19,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 13:52:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 13:52:19,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 13:52:19,614 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:52:19,614 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 13:52:19,615 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 13:52:19,615 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 13:52:19,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 13:52:19,618 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 13:52:19,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 13:52:19,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 01:52:19 BasicIcfg [2021-08-06 13:52:19,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 13:52:19,619 INFO L168 Benchmark]: Toolchain (without parser) took 3998.33 ms. Allocated memory was 196.1 MB in the beginning and 414.2 MB in the end (delta: 218.1 MB). Free memory was 158.3 MB in the beginning and 223.7 MB in the end (delta: -65.4 MB). Peak memory consumption was 153.4 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory is still 176.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.79 ms. Allocated memory is still 196.1 MB. Free memory was 158.2 MB in the beginning and 170.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 196.1 MB. Free memory was 170.1 MB in the beginning and 168.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 196.1 MB. Free memory was 168.4 MB in the beginning and 166.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: RCFGBuilder took 436.43 ms. Allocated memory is still 196.1 MB. Free memory was 166.9 MB in the beginning and 143.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,620 INFO L168 Benchmark]: TraceAbstraction took 3056.31 ms. Allocated memory was 196.1 MB in the beginning and 414.2 MB in the end (delta: 218.1 MB). Free memory was 143.2 MB in the beginning and 223.7 MB in the end (delta: -80.5 MB). Peak memory consumption was 139.2 MB. Max. memory is 8.0 GB. [2021-08-06 13:52:19,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory is still 176.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.79 ms. Allocated memory is still 196.1 MB. Free memory was 158.2 MB in the beginning and 170.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 196.1 MB. Free memory was 170.1 MB in the beginning and 168.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 196.1 MB. Free memory was 168.4 MB in the beginning and 166.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 436.43 ms. Allocated memory is still 196.1 MB. Free memory was 166.9 MB in the beginning and 143.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3056.31 ms. Allocated memory was 196.1 MB in the beginning and 414.2 MB in the end (delta: 218.1 MB). Free memory was 143.2 MB in the beginning and 223.7 MB in the end (delta: -80.5 MB). Peak memory consumption was 139.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2962.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 74.3ms, AutomataDifference: 990.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 179.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 732 SDtfs, 925 SDslu, 2736 SDs, 0 SdLazy, 263 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 173.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 622.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5560occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 466.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 408 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.3ms SsaConstructionTime, 200.6ms SatisfiabilityAnalysisTime, 869.0ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 13:52:19,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...