/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:03:59,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:03:59,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:03:59,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:03:59,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:03:59,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:03:59,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:03:59,115 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-Delay.epf [2021-08-06 19:03:59,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:03:59,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:03:59,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:03:59,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:03:59,133 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:03:59,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:03:59,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:03:59,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:03:59,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:03:59,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:03:59,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:03:59,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:03:59,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:03:59,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:03:59,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:03:59,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:03:59,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:03:59,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:03:59,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:03:59,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:03:59,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:03:59,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:03:59,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:03:59,137 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:03:59,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:03:59,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:03:59,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:03:59,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:03:59,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:03:59,386 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:03:59,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-08-06 19:03:59,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb22d1124/b2f9b81b12894339a5db732d47521bb1/FLAGbbb787b65 [2021-08-06 19:03:59,821 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:03:59,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-08-06 19:03:59,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb22d1124/b2f9b81b12894339a5db732d47521bb1/FLAGbbb787b65 [2021-08-06 19:04:00,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb22d1124/b2f9b81b12894339a5db732d47521bb1 [2021-08-06 19:04:00,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:04:00,166 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:04:00,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:00,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:04:00,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:04:00,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5223d782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00, skipping insertion in model container [2021-08-06 19:04:00,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:04:00,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:04:00,304 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/safe014_tso.oepc.i[950,963] [2021-08-06 19:04:00,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:00,392 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:04:00,439 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/safe014_tso.oepc.i[950,963] [2021-08-06 19:04:00,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:00,509 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:04:00,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00 WrapperNode [2021-08-06 19:04:00,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:00,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:00,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:04:00,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:04:00,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:00,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:04:00,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:04:00,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:04:00,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:04:00,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:04:00,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:04:00,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:04:00,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (1/1) ... [2021-08-06 19:04:00,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:00,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:04:00,614 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 19:04:00,642 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 19:04:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:04:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:04:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:04:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:04:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:04:00,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:04:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:04:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:04:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:04:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:04:00,658 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 19:04:00,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:04:00,959 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:04:00,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:00 BoogieIcfgContainer [2021-08-06 19:04:00,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:04:00,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:04:00,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:04:00,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:04:00,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:04:00" (1/3) ... [2021-08-06 19:04:00,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba59cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:00, skipping insertion in model container [2021-08-06 19:04:00,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:00" (2/3) ... [2021-08-06 19:04:00,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba59cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:00, skipping insertion in model container [2021-08-06 19:04:00,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:00" (3/3) ... [2021-08-06 19:04:00,965 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2021-08-06 19:04:00,969 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:04:00,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:04:00,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:04:00,969 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,992 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,997 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,997 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:01,004 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:04:01,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:04:01,044 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 19:04:01,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 19:04:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 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 19:04:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-06 19:04:01,431 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:01,432 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] [2021-08-06 19:04:01,432 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 19:04:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:01,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1061825978, now seen corresponding path program 1 times [2021-08-06 19:04:01,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:01,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208325645] [2021-08-06 19:04:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:01,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:01,709 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:01,713 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:01,823 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 19:04:01,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:01,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208325645] [2021-08-06 19:04:01,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208325645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:01,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:01,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:01,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624270107] [2021-08-06 19:04:01,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:01,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:01,843 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 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 8.166666666666666) 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) [2021-08-06 19:04:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:02,214 INFO L93 Difference]: Finished difference Result 10460 states and 18714 transitions. [2021-08-06 19:04:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:02,216 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 [2021-08-06 19:04:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:02,269 INFO L225 Difference]: With dead ends: 10460 [2021-08-06 19:04:02,270 INFO L226 Difference]: Without dead ends: 4110 [2021-08-06 19:04:02,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-08-06 19:04:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3154. [2021-08-06 19:04:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3105 states have (on average 2.1594202898550723) internal successors, (6705), 3153 states have internal predecessors, (6705), 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 19:04:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 6705 transitions. [2021-08-06 19:04:02,410 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 6705 transitions. Word has length 49 [2021-08-06 19:04:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:02,411 INFO L470 AbstractCegarLoop]: Abstraction has 3154 states and 6705 transitions. [2021-08-06 19:04:02,411 INFO L471 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) [2021-08-06 19:04:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 6705 transitions. [2021-08-06 19:04:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-06 19:04:02,415 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:02,417 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] [2021-08-06 19:04:02,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:04:02,422 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 19:04:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1876017593, now seen corresponding path program 1 times [2021-08-06 19:04:02,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:02,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792905478] [2021-08-06 19:04:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:02,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:02,526 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 19:04:02,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:02,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792905478] [2021-08-06 19:04:02,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792905478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:02,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:02,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:02,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772012806] [2021-08-06 19:04:02,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:02,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:02,530 INFO L87 Difference]: Start difference. First operand 3154 states and 6705 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) [2021-08-06 19:04:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:02,675 INFO L93 Difference]: Finished difference Result 3562 states and 7772 transitions. [2021-08-06 19:04:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:02,676 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 [2021-08-06 19:04:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:02,684 INFO L225 Difference]: With dead ends: 3562 [2021-08-06 19:04:02,684 INFO L226 Difference]: Without dead ends: 2478 [2021-08-06 19:04:02,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-08-06 19:04:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2454. [2021-08-06 19:04:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2419 states have (on average 2.1744522529971064) internal successors, (5260), 2453 states have internal predecessors, (5260), 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 19:04:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 5260 transitions. [2021-08-06 19:04:02,727 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 5260 transitions. Word has length 51 [2021-08-06 19:04:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:02,728 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 5260 transitions. [2021-08-06 19:04:02,728 INFO L471 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) [2021-08-06 19:04:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 5260 transitions. [2021-08-06 19:04:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-06 19:04:02,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:02,731 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] [2021-08-06 19:04:02,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:04:02,732 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 19:04:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash -794500185, now seen corresponding path program 1 times [2021-08-06 19:04:02,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:02,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496632002] [2021-08-06 19:04:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:02,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:02,807 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:02,809 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:02,885 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 19:04:02,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:02,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496632002] [2021-08-06 19:04:02,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496632002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:02,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:02,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:02,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379366210] [2021-08-06 19:04:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:02,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:02,887 INFO L87 Difference]: Start difference. First operand 2454 states and 5260 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:03,043 INFO L93 Difference]: Finished difference Result 3294 states and 7679 transitions. [2021-08-06 19:04:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-06 19:04:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:03,052 INFO L225 Difference]: With dead ends: 3294 [2021-08-06 19:04:03,052 INFO L226 Difference]: Without dead ends: 2542 [2021-08-06 19:04:03,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-08-06 19:04:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2070. [2021-08-06 19:04:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2035 states have (on average 2.211302211302211) internal successors, (4500), 2069 states have internal predecessors, (4500), 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 19:04:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 4500 transitions. [2021-08-06 19:04:03,091 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 4500 transitions. Word has length 52 [2021-08-06 19:04:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:03,093 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 4500 transitions. [2021-08-06 19:04:03,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 4500 transitions. [2021-08-06 19:04:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 19:04:03,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:03,096 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] [2021-08-06 19:04:03,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:04:03,096 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 19:04:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:03,097 INFO L82 PathProgramCache]: Analyzing trace with hash 803761480, now seen corresponding path program 1 times [2021-08-06 19:04:03,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:03,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538199832] [2021-08-06 19:04:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:03,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:03,224 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 19:04:03,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:03,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538199832] [2021-08-06 19:04:03,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538199832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:03,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:03,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:03,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995019241] [2021-08-06 19:04:03,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:03,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:03,227 INFO L87 Difference]: Start difference. First operand 2070 states and 4500 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) [2021-08-06 19:04:03,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:03,314 INFO L93 Difference]: Finished difference Result 2350 states and 5260 transitions. [2021-08-06 19:04:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:03,314 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 [2021-08-06 19:04:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:03,320 INFO L225 Difference]: With dead ends: 2350 [2021-08-06 19:04:03,320 INFO L226 Difference]: Without dead ends: 1882 [2021-08-06 19:04:03,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-08-06 19:04:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1804. [2021-08-06 19:04:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1776 states have (on average 2.150900900900901) internal successors, (3820), 1803 states have internal predecessors, (3820), 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 19:04:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 3820 transitions. [2021-08-06 19:04:03,348 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 3820 transitions. Word has length 53 [2021-08-06 19:04:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:03,349 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 3820 transitions. [2021-08-06 19:04:03,349 INFO L471 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) [2021-08-06 19:04:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 3820 transitions. [2021-08-06 19:04:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 19:04:03,351 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:03,351 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 19:04:03,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:04:03,352 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 19:04:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:03,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1620999016, now seen corresponding path program 1 times [2021-08-06 19:04:03,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:03,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924870907] [2021-08-06 19:04:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:03,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:03,425 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 19:04:03,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:03,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924870907] [2021-08-06 19:04:03,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924870907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:03,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:03,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:03,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786652310] [2021-08-06 19:04:03,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:03,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:03,427 INFO L87 Difference]: Start difference. First operand 1804 states and 3820 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 19:04:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:03,501 INFO L93 Difference]: Finished difference Result 1980 states and 4392 transitions. [2021-08-06 19:04:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:03,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 19:04:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:03,516 INFO L225 Difference]: With dead ends: 1980 [2021-08-06 19:04:03,516 INFO L226 Difference]: Without dead ends: 1464 [2021-08-06 19:04:03,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-08-06 19:04:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2021-08-06 19:04:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1444 states have (on average 2.200831024930748) internal successors, (3178), 1463 states have internal predecessors, (3178), 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 19:04:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 3178 transitions. [2021-08-06 19:04:03,576 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 3178 transitions. Word has length 54 [2021-08-06 19:04:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 3178 transitions. [2021-08-06 19:04:03,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 19:04:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 3178 transitions. [2021-08-06 19:04:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 19:04:03,581 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:03,581 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] [2021-08-06 19:04:03,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:04:03,581 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 19:04:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1053186439, now seen corresponding path program 1 times [2021-08-06 19:04:03,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:03,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364717093] [2021-08-06 19:04:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:03,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:03,694 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 19:04:03,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:03,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364717093] [2021-08-06 19:04:03,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364717093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:03,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:03,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:03,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660414423] [2021-08-06 19:04:03,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:03,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:03,696 INFO L87 Difference]: Start difference. First operand 1464 states and 3178 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 19:04:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:03,794 INFO L93 Difference]: Finished difference Result 1884 states and 4148 transitions. [2021-08-06 19:04:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-08-06 19:04:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:03,797 INFO L225 Difference]: With dead ends: 1884 [2021-08-06 19:04:03,797 INFO L226 Difference]: Without dead ends: 774 [2021-08-06 19:04:03,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-06 19:04:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-08-06 19:04:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-08-06 19:04:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 754 states have (on average 2.197612732095491) internal successors, (1657), 773 states have internal predecessors, (1657), 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 19:04:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1657 transitions. [2021-08-06 19:04:03,808 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1657 transitions. Word has length 56 [2021-08-06 19:04:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:03,809 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1657 transitions. [2021-08-06 19:04:03,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 19:04:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1657 transitions. [2021-08-06 19:04:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-06 19:04:03,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:03,811 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] [2021-08-06 19:04:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:04:03,811 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 19:04:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:03,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2115441121, now seen corresponding path program 1 times [2021-08-06 19:04:03,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:03,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434498170] [2021-08-06 19:04:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:03,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:03,885 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:03,887 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:03,900 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 19:04:03,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:03,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434498170] [2021-08-06 19:04:03,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434498170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:03,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:03,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:03,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498943957] [2021-08-06 19:04:03,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:03,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:03,902 INFO L87 Difference]: Start difference. First operand 774 states and 1657 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-08-06 19:04:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:03,977 INFO L93 Difference]: Finished difference Result 966 states and 2043 transitions. [2021-08-06 19:04:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:03,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 [2021-08-06 19:04:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:03,979 INFO L225 Difference]: With dead ends: 966 [2021-08-06 19:04:03,979 INFO L226 Difference]: Without dead ends: 662 [2021-08-06 19:04:03,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-08-06 19:04:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2021-08-06 19:04:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 642 states have (on average 2.264797507788162) internal successors, (1454), 661 states have internal predecessors, (1454), 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 19:04:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1454 transitions. [2021-08-06 19:04:03,990 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1454 transitions. Word has length 57 [2021-08-06 19:04:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:03,990 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1454 transitions. [2021-08-06 19:04:03,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-08-06 19:04:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1454 transitions. [2021-08-06 19:04:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 19:04:03,992 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:03,992 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 19:04:03,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:04:03,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1879648782, now seen corresponding path program 1 times [2021-08-06 19:04:03,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:03,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466225924] [2021-08-06 19:04:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:03,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:04,068 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:04,070 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:04,082 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 19:04:04,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:04,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466225924] [2021-08-06 19:04:04,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466225924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:04,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:04,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:04,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3534831] [2021-08-06 19:04:04,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:04,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:04,084 INFO L87 Difference]: Start difference. First operand 662 states and 1454 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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 19:04:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:04,170 INFO L93 Difference]: Finished difference Result 671 states and 1409 transitions. [2021-08-06 19:04:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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 19:04:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:04,172 INFO L225 Difference]: With dead ends: 671 [2021-08-06 19:04:04,172 INFO L226 Difference]: Without dead ends: 443 [2021-08-06 19:04:04,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:04:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-08-06 19:04:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-08-06 19:04:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 425 states have (on average 2.192941176470588) internal successors, (932), 442 states have internal predecessors, (932), 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 19:04:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 932 transitions. [2021-08-06 19:04:04,181 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 932 transitions. Word has length 58 [2021-08-06 19:04:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:04,181 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 932 transitions. [2021-08-06 19:04:04,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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 19:04:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 932 transitions. [2021-08-06 19:04:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-06 19:04:04,182 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:04,182 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] [2021-08-06 19:04:04,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:04:04,182 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:04,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1959358861, now seen corresponding path program 1 times [2021-08-06 19:04:04,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:04,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181949774] [2021-08-06 19:04:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:04,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:04,264 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:04,265 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:04,275 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 19:04:04,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:04,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181949774] [2021-08-06 19:04:04,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181949774] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:04,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:04,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:04,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220721584] [2021-08-06 19:04:04,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:04,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:04,277 INFO L87 Difference]: Start difference. First operand 443 states and 932 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 19:04:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:04,374 INFO L93 Difference]: Finished difference Result 335 states and 642 transitions. [2021-08-06 19:04:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:04:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-08-06 19:04:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:04,375 INFO L225 Difference]: With dead ends: 335 [2021-08-06 19:04:04,375 INFO L226 Difference]: Without dead ends: 200 [2021-08-06 19:04:04,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-08-06 19:04:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-08-06 19:04:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 191 states have (on average 1.8219895287958114) internal successors, (348), 199 states have internal predecessors, (348), 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 19:04:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 348 transitions. [2021-08-06 19:04:04,378 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 348 transitions. Word has length 59 [2021-08-06 19:04:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:04,378 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 348 transitions. [2021-08-06 19:04:04,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 19:04:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 348 transitions. [2021-08-06 19:04:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-06 19:04:04,379 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:04,379 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] [2021-08-06 19:04:04,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:04:04,379 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:04,379 INFO L82 PathProgramCache]: Analyzing trace with hash 491738510, now seen corresponding path program 1 times [2021-08-06 19:04:04,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:04,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30905215] [2021-08-06 19:04:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:04,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:04,421 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:04,422 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:04,481 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 19:04:04,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:04,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30905215] [2021-08-06 19:04:04,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30905215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:04,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:04,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:04,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130603239] [2021-08-06 19:04:04,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:04,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:04,483 INFO L87 Difference]: Start difference. First operand 200 states and 348 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 19:04:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:04,541 INFO L93 Difference]: Finished difference Result 313 states and 580 transitions. [2021-08-06 19:04:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-08-06 19:04:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:04,543 INFO L225 Difference]: With dead ends: 313 [2021-08-06 19:04:04,543 INFO L226 Difference]: Without dead ends: 198 [2021-08-06 19:04:04,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:04:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-06 19:04:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-08-06 19:04:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 189 states have (on average 1.8253968253968254) internal successors, (345), 197 states have internal predecessors, (345), 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 19:04:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 345 transitions. [2021-08-06 19:04:04,546 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 345 transitions. Word has length 61 [2021-08-06 19:04:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:04,546 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 345 transitions. [2021-08-06 19:04:04,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 19:04:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 345 transitions. [2021-08-06 19:04:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-06 19:04:04,548 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:04,549 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] [2021-08-06 19:04:04,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 19:04:04,549 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:04,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1911532780, now seen corresponding path program 2 times [2021-08-06 19:04:04,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:04,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771824918] [2021-08-06 19:04:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:04,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:04,601 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:04,602 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:04,654 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 19:04:04,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:04,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771824918] [2021-08-06 19:04:04,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771824918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:04,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:04,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:04,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578157896] [2021-08-06 19:04:04,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:04,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:04,656 INFO L87 Difference]: Start difference. First operand 198 states and 345 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 19:04:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:04,708 INFO L93 Difference]: Finished difference Result 162 states and 285 transitions. [2021-08-06 19:04:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:04:04,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-08-06 19:04:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:04,708 INFO L225 Difference]: With dead ends: 162 [2021-08-06 19:04:04,708 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:04:04,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:04:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:04:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:04:04,709 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 19:04:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:04:04,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-08-06 19:04:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:04,709 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:04:04,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 19:04:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:04:04,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:04:04,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:04:04,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:04:04,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:04:04,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:04:04,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 19:04:04,714 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:04:04,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:04:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:04:04 BasicIcfg [2021-08-06 19:04:04,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:04:04,716 INFO L168 Benchmark]: Toolchain (without parser) took 4549.92 ms. Allocated memory was 189.8 MB in the beginning and 239.1 MB in the end (delta: 49.3 MB). Free memory was 152.3 MB in the beginning and 93.2 MB in the end (delta: 59.1 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,716 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory was 170.2 MB in the beginning and 170.1 MB in the end (delta: 89.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:04:04,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.18 ms. Allocated memory is still 189.8 MB. Free memory was 152.1 MB in the beginning and 163.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 189.8 MB. Free memory was 163.9 MB in the beginning and 161.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,717 INFO L168 Benchmark]: Boogie Preprocessor took 28.29 ms. Allocated memory is still 189.8 MB. Free memory was 161.8 MB in the beginning and 160.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,717 INFO L168 Benchmark]: RCFGBuilder took 372.85 ms. Allocated memory is still 189.8 MB. Free memory was 160.8 MB in the beginning and 136.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,717 INFO L168 Benchmark]: TraceAbstraction took 3753.82 ms. Allocated memory was 189.8 MB in the beginning and 239.1 MB in the end (delta: 49.3 MB). Free memory was 136.1 MB in the beginning and 93.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:04,718 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 189.8 MB. Free memory was 170.2 MB in the beginning and 170.1 MB in the end (delta: 89.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.18 ms. Allocated memory is still 189.8 MB. Free memory was 152.1 MB in the beginning and 163.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 189.8 MB. Free memory was 163.9 MB in the beginning and 161.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.29 ms. Allocated memory is still 189.8 MB. Free memory was 161.8 MB in the beginning and 160.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 372.85 ms. Allocated memory is still 189.8 MB. Free memory was 160.8 MB in the beginning and 136.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3753.82 ms. Allocated memory was 189.8 MB in the beginning and 239.1 MB in the end (delta: 49.3 MB). Free memory was 136.1 MB in the beginning and 93.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18424, positive: 17668, positive conditional: 17668, positive unconditional: 0, negative: 756, negative conditional: 756, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18345, positive: 17668, positive conditional: 0, positive unconditional: 17668, negative: 677, negative conditional: 0, negative unconditional: 677, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 637, positive conditional: 0, positive unconditional: 637, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 658, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18345, positive: 17031, positive conditional: 0, positive unconditional: 17031, negative: 656, negative conditional: 0, negative unconditional: 656, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 637, Positive conditional cache size: 0, Positive unconditional cache size: 637, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 79 - 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3675.6ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 50.2ms, AutomataDifference: 1430.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 357.4ms, PartialOrderReductionTime: 342.1ms, HoareTripleCheckerStatistics: 1035 SDtfs, 1225 SDslu, 3235 SDs, 0 SdLazy, 455 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 304.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 944.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 333.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 1530 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.6ms SsaConstructionTime, 213.0ms SatisfiabilityAnalysisTime, 1086.3ms InterpolantComputationTime, 611 NumberOfCodeBlocks, 611 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 2288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 19:04:04,740 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...