/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:43:36,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:43:36,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:43:36,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:43:36,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 02:43:36,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 02:43:36,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 02:43:36,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 02:43:36,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 02:43:36,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 02:43:36,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 02:43:36,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 02:43:36,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 02:43:36,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 02:43:36,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 02:43:36,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 02:43:36,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 02:43:36,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:43:36,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:43:36,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:43:36,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:43:36,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:43:36,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:43:36,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:43:36,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:43:36,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:43:36,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:43:36,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:43:36,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:43:36,194 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:43:36,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:43:36,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:43:36,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:43:36,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:43:36,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:43:36,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:43:36,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:43:36,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:43:36,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:43:36,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:43:36,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:43:36,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:43:36,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:43:36,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:43:36,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:43:36,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:43:36,376 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:43:36,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 02:43:36,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70efef8ac/1dfa7fae60884cf7b603c7a5c3197e2e/FLAG648f00bb1 [2022-01-18 02:43:36,753 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:43:36,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 02:43:36,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70efef8ac/1dfa7fae60884cf7b603c7a5c3197e2e/FLAG648f00bb1 [2022-01-18 02:43:37,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70efef8ac/1dfa7fae60884cf7b603c7a5c3197e2e [2022-01-18 02:43:37,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:43:37,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:43:37,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:43:37,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:43:37,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:43:37,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400dca6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37, skipping insertion in model container [2022-01-18 02:43:37,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:43:37,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:43:37,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-01-18 02:43:37,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:43:37,350 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:43:37,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-01-18 02:43:37,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:43:37,371 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:43:37,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37 WrapperNode [2022-01-18 02:43:37,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:43:37,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:43:37,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:43:37,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:43:37,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,405 INFO L137 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2022-01-18 02:43:37,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:43:37,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:43:37,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:43:37,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:43:37,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:43:37,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:43:37,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:43:37,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:43:37,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (1/1) ... [2022-01-18 02:43:37,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:43:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:37,460 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) [2022-01-18 02:43:37,463 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 [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:43:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:43:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 02:43:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 02:43:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 02:43:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:43:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:43:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:43:37,492 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:43:37,552 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:43:37,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:43:37,722 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:43:37,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:43:37,761 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 02:43:37,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:43:37 BoogieIcfgContainer [2022-01-18 02:43:37,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:43:37,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:43:37,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:43:37,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:43:37,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:43:37" (1/3) ... [2022-01-18 02:43:37,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2dc8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:43:37, skipping insertion in model container [2022-01-18 02:43:37,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:43:37" (2/3) ... [2022-01-18 02:43:37,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2dc8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:43:37, skipping insertion in model container [2022-01-18 02:43:37,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:43:37" (3/3) ... [2022-01-18 02:43:37,770 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 02:43:37,773 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:43:37,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:43:37,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:43:37,773 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:43:37,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,811 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,813 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,813 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,813 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,813 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,815 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,815 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,815 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,815 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:43:37,821 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 02:43:37,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:43:37,850 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, mAutomataTypeConcurrency=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 [2022-01-18 02:43:37,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 02:43:37,858 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 134 places, 131 transitions, 294 flow [2022-01-18 02:43:38,024 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 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) [2022-01-18 02:43:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 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) [2022-01-18 02:43:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-18 02:43:38,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:38,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:38,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash 621740972, now seen corresponding path program 1 times [2022-01-18 02:43:38,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:38,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525179787] [2022-01-18 02:43:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:38,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:38,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525179787] [2022-01-18 02:43:38,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525179787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:38,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:38,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:43:38,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97499548] [2022-01-18 02:43:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:38,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:43:38,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:43:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:43:38,296 INFO L87 Difference]: Start difference. First operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 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 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-01-18 02:43:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:38,395 INFO L93 Difference]: Finished difference Result 3953 states and 17198 transitions. [2022-01-18 02:43:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:43:38,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2022-01-18 02:43:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:38,445 INFO L225 Difference]: With dead ends: 3953 [2022-01-18 02:43:38,445 INFO L226 Difference]: Without dead ends: 3951 [2022-01-18 02:43:38,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:43:38,450 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:38,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:43:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-01-18 02:43:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2022-01-18 02:43:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 4.353417721518987) internal successors, (17196), 3950 states have internal predecessors, (17196), 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) [2022-01-18 02:43:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 17196 transitions. [2022-01-18 02:43:38,698 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 17196 transitions. Word has length 98 [2022-01-18 02:43:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:38,698 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 17196 transitions. [2022-01-18 02:43:38,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-01-18 02:43:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 17196 transitions. [2022-01-18 02:43:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-18 02:43:38,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:38,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:38,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:43:38,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1371881006, now seen corresponding path program 1 times [2022-01-18 02:43:38,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:38,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903875712] [2022-01-18 02:43:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:38,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:38,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:38,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903875712] [2022-01-18 02:43:38,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903875712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:38,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:38,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:43:38,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869527321] [2022-01-18 02:43:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:38,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:43:38,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:43:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:43:38,952 INFO L87 Difference]: Start difference. First operand 3951 states and 17196 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2022-01-18 02:43:39,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:39,139 INFO L93 Difference]: Finished difference Result 7852 states and 32994 transitions. [2022-01-18 02:43:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:43:39,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 98 [2022-01-18 02:43:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:39,212 INFO L225 Difference]: With dead ends: 7852 [2022-01-18 02:43:39,212 INFO L226 Difference]: Without dead ends: 6391 [2022-01-18 02:43:39,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:43:39,215 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:39,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 328 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2022-01-18 02:43:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6031. [2022-01-18 02:43:39,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6030 states have (on average 4.253233830845772) internal successors, (25647), 6030 states have internal predecessors, (25647), 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) [2022-01-18 02:43:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 25647 transitions. [2022-01-18 02:43:39,408 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 25647 transitions. Word has length 98 [2022-01-18 02:43:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:39,410 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 25647 transitions. [2022-01-18 02:43:39,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2022-01-18 02:43:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 25647 transitions. [2022-01-18 02:43:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:43:39,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:39,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:39,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:43:39,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash -330592620, now seen corresponding path program 1 times [2022-01-18 02:43:39,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:39,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371270631] [2022-01-18 02:43:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:39,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:39,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371270631] [2022-01-18 02:43:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371270631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:39,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:39,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 02:43:39,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295690610] [2022-01-18 02:43:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:39,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:39,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:43:39,665 INFO L87 Difference]: Start difference. First operand 6031 states and 25647 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:39,981 INFO L93 Difference]: Finished difference Result 12359 states and 52502 transitions. [2022-01-18 02:43:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-18 02:43:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:40,035 INFO L225 Difference]: With dead ends: 12359 [2022-01-18 02:43:40,036 INFO L226 Difference]: Without dead ends: 11771 [2022-01-18 02:43:40,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:43:40,041 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 358 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:40,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 589 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:43:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11771 states. [2022-01-18 02:43:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11771 to 5443. [2022-01-18 02:43:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 4.299889746416759) internal successors, (23400), 5442 states have internal predecessors, (23400), 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) [2022-01-18 02:43:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 23400 transitions. [2022-01-18 02:43:40,334 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 23400 transitions. Word has length 100 [2022-01-18 02:43:40,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:40,334 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 23400 transitions. [2022-01-18 02:43:40,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 23400 transitions. [2022-01-18 02:43:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:43:40,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:40,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:40,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 02:43:40,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -858528176, now seen corresponding path program 1 times [2022-01-18 02:43:40,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:40,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800634599] [2022-01-18 02:43:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:40,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:40,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:40,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800634599] [2022-01-18 02:43:40,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800634599] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:40,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664985829] [2022-01-18 02:43:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:40,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:40,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:40,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:43:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:40,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:43:40,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:40,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:41,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664985829] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:41,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 02:43:41,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 02:43:41,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494849164] [2022-01-18 02:43:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:41,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:41,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:43:41,190 INFO L87 Difference]: Start difference. First operand 5443 states and 23400 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:41,392 INFO L93 Difference]: Finished difference Result 13827 states and 58858 transitions. [2022-01-18 02:43:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-18 02:43:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:41,444 INFO L225 Difference]: With dead ends: 13827 [2022-01-18 02:43:41,444 INFO L226 Difference]: Without dead ends: 13827 [2022-01-18 02:43:41,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-01-18 02:43:41,445 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 567 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:41,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 406 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2022-01-18 02:43:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 6328. [2022-01-18 02:43:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 4.34392287023866) internal successors, (27484), 6327 states have internal predecessors, (27484), 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) [2022-01-18 02:43:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 27484 transitions. [2022-01-18 02:43:41,711 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 27484 transitions. Word has length 100 [2022-01-18 02:43:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:41,712 INFO L470 AbstractCegarLoop]: Abstraction has 6328 states and 27484 transitions. [2022-01-18 02:43:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 27484 transitions. [2022-01-18 02:43:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:43:41,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:41,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:41,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 02:43:41,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:41,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:41,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1176334216, now seen corresponding path program 2 times [2022-01-18 02:43:41,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:41,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897610209] [2022-01-18 02:43:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:41,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:42,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:42,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897610209] [2022-01-18 02:43:42,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897610209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:42,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:42,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 02:43:42,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083021037] [2022-01-18 02:43:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:42,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:42,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:43:42,058 INFO L87 Difference]: Start difference. First operand 6328 states and 27484 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:42,339 INFO L93 Difference]: Finished difference Result 10542 states and 45765 transitions. [2022-01-18 02:43:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:42,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-18 02:43:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:42,381 INFO L225 Difference]: With dead ends: 10542 [2022-01-18 02:43:42,381 INFO L226 Difference]: Without dead ends: 10152 [2022-01-18 02:43:42,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:43:42,382 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 335 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:42,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 482 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:43:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2022-01-18 02:43:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 5938. [2022-01-18 02:43:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5938 states, 5937 states have (on average 4.3518612093649995) internal successors, (25837), 5937 states have internal predecessors, (25837), 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) [2022-01-18 02:43:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 25837 transitions. [2022-01-18 02:43:42,566 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 25837 transitions. Word has length 100 [2022-01-18 02:43:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:42,567 INFO L470 AbstractCegarLoop]: Abstraction has 5938 states and 25837 transitions. [2022-01-18 02:43:42,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 25837 transitions. [2022-01-18 02:43:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:43:42,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:42,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:42,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 02:43:42,581 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1097611240, now seen corresponding path program 2 times [2022-01-18 02:43:42,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:42,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353179751] [2022-01-18 02:43:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:42,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:42,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353179751] [2022-01-18 02:43:42,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353179751] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210355709] [2022-01-18 02:43:42,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:43:42,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:42,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:42,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:42,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:43:42,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:43:42,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:42,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:43:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:43,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:43,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210355709] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:43,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 02:43:43,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 02:43:43,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865443171] [2022-01-18 02:43:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:43,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:43,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:43:43,402 INFO L87 Difference]: Start difference. First operand 5938 states and 25837 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:43,575 INFO L93 Difference]: Finished difference Result 9243 states and 39941 transitions. [2022-01-18 02:43:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:43,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-18 02:43:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:43,604 INFO L225 Difference]: With dead ends: 9243 [2022-01-18 02:43:43,604 INFO L226 Difference]: Without dead ends: 9243 [2022-01-18 02:43:43,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:43:43,605 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 298 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:43,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 605 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2022-01-18 02:43:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 6252. [2022-01-18 02:43:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 4.363781794912814) internal successors, (27278), 6251 states have internal predecessors, (27278), 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) [2022-01-18 02:43:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 27278 transitions. [2022-01-18 02:43:43,828 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 27278 transitions. Word has length 100 [2022-01-18 02:43:43,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:43,828 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 27278 transitions. [2022-01-18 02:43:43,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 27278 transitions. [2022-01-18 02:43:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:43:43,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:43,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:43,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 02:43:44,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 02:43:44,051 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 714430562, now seen corresponding path program 3 times [2022-01-18 02:43:44,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401989362] [2022-01-18 02:43:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:44,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:44,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:44,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401989362] [2022-01-18 02:43:44,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401989362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:44,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:44,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 02:43:44,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607924821] [2022-01-18 02:43:44,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:44,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:44,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:43:44,189 INFO L87 Difference]: Start difference. First operand 6252 states and 27278 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:44,356 INFO L93 Difference]: Finished difference Result 7454 states and 32257 transitions. [2022-01-18 02:43:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 02:43:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-18 02:43:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:44,377 INFO L225 Difference]: With dead ends: 7454 [2022-01-18 02:43:44,377 INFO L226 Difference]: Without dead ends: 6926 [2022-01-18 02:43:44,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:43:44,378 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 258 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:44,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 364 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2022-01-18 02:43:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 5886. [2022-01-18 02:43:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5886 states, 5885 states have (on average 4.357349192863212) internal successors, (25643), 5885 states have internal predecessors, (25643), 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) [2022-01-18 02:43:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5886 states to 5886 states and 25643 transitions. [2022-01-18 02:43:44,509 INFO L78 Accepts]: Start accepts. Automaton has 5886 states and 25643 transitions. Word has length 100 [2022-01-18 02:43:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 5886 states and 25643 transitions. [2022-01-18 02:43:44,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2022-01-18 02:43:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5886 states and 25643 transitions. [2022-01-18 02:43:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 02:43:44,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:44,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:44,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 02:43:44,523 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1717384526, now seen corresponding path program 1 times [2022-01-18 02:43:44,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925627074] [2022-01-18 02:43:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:44,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:44,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925627074] [2022-01-18 02:43:44,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925627074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173530878] [2022-01-18 02:43:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:44,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:44,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:44,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:43:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:44,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:43:44,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:44,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:45,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173530878] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:45,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:45,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-01-18 02:43:45,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480806066] [2022-01-18 02:43:45,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:45,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 02:43:45,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 02:43:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-18 02:43:45,077 INFO L87 Difference]: Start difference. First operand 5886 states and 25643 transitions. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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) [2022-01-18 02:43:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:45,482 INFO L93 Difference]: Finished difference Result 23775 states and 103391 transitions. [2022-01-18 02:43:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 02:43:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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 102 [2022-01-18 02:43:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:45,551 INFO L225 Difference]: With dead ends: 23775 [2022-01-18 02:43:45,551 INFO L226 Difference]: Without dead ends: 21393 [2022-01-18 02:43:45,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:43:45,553 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 432 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:45,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1310 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:43:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2022-01-18 02:43:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 12696. [2022-01-18 02:43:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12695 states have (on average 4.422764868058291) internal successors, (56147), 12695 states have internal predecessors, (56147), 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) [2022-01-18 02:43:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 56147 transitions. [2022-01-18 02:43:45,943 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 56147 transitions. Word has length 102 [2022-01-18 02:43:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:45,943 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 56147 transitions. [2022-01-18 02:43:45,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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) [2022-01-18 02:43:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 56147 transitions. [2022-01-18 02:43:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 02:43:45,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:45,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:45,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 02:43:46,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:46,178 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:46,179 INFO L85 PathProgramCache]: Analyzing trace with hash 631182096, now seen corresponding path program 1 times [2022-01-18 02:43:46,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:46,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577413998] [2022-01-18 02:43:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:46,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:46,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:46,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577413998] [2022-01-18 02:43:46,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577413998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:46,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295779936] [2022-01-18 02:43:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:46,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:46,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:46,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:43:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:46,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:43:46,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:46,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:46,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295779936] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:46,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 02:43:46,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 02:43:46,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784017658] [2022-01-18 02:43:46,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:46,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:46,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:46,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:43:46,866 INFO L87 Difference]: Start difference. First operand 12696 states and 56147 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2022-01-18 02:43:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:47,186 INFO L93 Difference]: Finished difference Result 25239 states and 111550 transitions. [2022-01-18 02:43:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 104 [2022-01-18 02:43:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:47,294 INFO L225 Difference]: With dead ends: 25239 [2022-01-18 02:43:47,295 INFO L226 Difference]: Without dead ends: 24831 [2022-01-18 02:43:47,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-01-18 02:43:47,296 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 519 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:47,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 372 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24831 states. [2022-01-18 02:43:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24831 to 14571. [2022-01-18 02:43:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14571 states, 14570 states have (on average 4.482292381606039) internal successors, (65307), 14570 states have internal predecessors, (65307), 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) [2022-01-18 02:43:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14571 states to 14571 states and 65307 transitions. [2022-01-18 02:43:47,835 INFO L78 Accepts]: Start accepts. Automaton has 14571 states and 65307 transitions. Word has length 104 [2022-01-18 02:43:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:47,836 INFO L470 AbstractCegarLoop]: Abstraction has 14571 states and 65307 transitions. [2022-01-18 02:43:47,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2022-01-18 02:43:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14571 states and 65307 transitions. [2022-01-18 02:43:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 02:43:47,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:47,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:47,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 02:43:48,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:48,070 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1717204, now seen corresponding path program 2 times [2022-01-18 02:43:48,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:48,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849400233] [2022-01-18 02:43:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:48,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:48,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:48,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849400233] [2022-01-18 02:43:48,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849400233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:43:48,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:43:48,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 02:43:48,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683186438] [2022-01-18 02:43:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:43:48,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:43:48,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:43:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:43:48,176 INFO L87 Difference]: Start difference. First operand 14571 states and 65307 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2022-01-18 02:43:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:48,595 INFO L93 Difference]: Finished difference Result 18733 states and 83223 transitions. [2022-01-18 02:43:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 02:43:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 104 [2022-01-18 02:43:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:48,679 INFO L225 Difference]: With dead ends: 18733 [2022-01-18 02:43:48,680 INFO L226 Difference]: Without dead ends: 18037 [2022-01-18 02:43:48,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:43:48,680 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 226 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:48,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 434 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18037 states. [2022-01-18 02:43:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18037 to 14247. [2022-01-18 02:43:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14246 states have (on average 4.471500772146568) internal successors, (63701), 14246 states have internal predecessors, (63701), 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) [2022-01-18 02:43:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 63701 transitions. [2022-01-18 02:43:49,097 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 63701 transitions. Word has length 104 [2022-01-18 02:43:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:49,097 INFO L470 AbstractCegarLoop]: Abstraction has 14247 states and 63701 transitions. [2022-01-18 02:43:49,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2022-01-18 02:43:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 63701 transitions. [2022-01-18 02:43:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 02:43:49,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:49,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:49,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 02:43:49,126 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash 550875736, now seen corresponding path program 1 times [2022-01-18 02:43:49,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:49,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138833930] [2022-01-18 02:43:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:49,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:49,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138833930] [2022-01-18 02:43:49,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138833930] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439756861] [2022-01-18 02:43:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:49,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:49,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:49,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:43:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:49,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:43:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:49,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:49,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439756861] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:49,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:49,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 02:43:49,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287751688] [2022-01-18 02:43:49,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:49,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 02:43:49,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:49,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 02:43:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:43:49,702 INFO L87 Difference]: Start difference. First operand 14247 states and 63701 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2022-01-18 02:43:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:50,052 INFO L93 Difference]: Finished difference Result 35267 states and 155710 transitions. [2022-01-18 02:43:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 02:43:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 106 [2022-01-18 02:43:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:50,176 INFO L225 Difference]: With dead ends: 35267 [2022-01-18 02:43:50,176 INFO L226 Difference]: Without dead ends: 31907 [2022-01-18 02:43:50,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 02:43:50,177 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 114 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:50,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 913 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:43:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31907 states. [2022-01-18 02:43:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31907 to 19578. [2022-01-18 02:43:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19578 states, 19577 states have (on average 4.50319252183685) internal successors, (88159), 19577 states have internal predecessors, (88159), 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) [2022-01-18 02:43:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19578 states to 19578 states and 88159 transitions. [2022-01-18 02:43:50,837 INFO L78 Accepts]: Start accepts. Automaton has 19578 states and 88159 transitions. Word has length 106 [2022-01-18 02:43:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:50,837 INFO L470 AbstractCegarLoop]: Abstraction has 19578 states and 88159 transitions. [2022-01-18 02:43:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2022-01-18 02:43:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19578 states and 88159 transitions. [2022-01-18 02:43:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:43:50,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:50,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:50,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:43:51,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 02:43:51,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1934084240, now seen corresponding path program 2 times [2022-01-18 02:43:51,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218973265] [2022-01-18 02:43:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:51,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:51,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:51,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218973265] [2022-01-18 02:43:51,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218973265] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:51,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951843320] [2022-01-18 02:43:51,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:43:51,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:51,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:51,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:43:51,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:43:51,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:51,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:43:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:51,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:52,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951843320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:52,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:52,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 02:43:52,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796680446] [2022-01-18 02:43:52,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:52,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:43:52,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:43:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:43:52,157 INFO L87 Difference]: Start difference. First operand 19578 states and 88159 transitions. Second operand has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 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) [2022-01-18 02:43:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:54,337 INFO L93 Difference]: Finished difference Result 80099 states and 357825 transitions. [2022-01-18 02:43:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:43:54,338 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 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 108 [2022-01-18 02:43:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:54,698 INFO L225 Difference]: With dead ends: 80099 [2022-01-18 02:43:54,698 INFO L226 Difference]: Without dead ends: 74822 [2022-01-18 02:43:54,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=5255, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:43:54,700 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1960 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:54,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 2721 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:43:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74822 states. [2022-01-18 02:43:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74822 to 37534. [2022-01-18 02:43:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37533 states have (on average 4.614419311006315) internal successors, (173193), 37533 states have internal predecessors, (173193), 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) [2022-01-18 02:43:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 173193 transitions. [2022-01-18 02:43:56,368 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 173193 transitions. Word has length 108 [2022-01-18 02:43:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:56,369 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 173193 transitions. [2022-01-18 02:43:56,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 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) [2022-01-18 02:43:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 173193 transitions. [2022-01-18 02:43:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:43:56,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:56,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:56,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 02:43:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:56,669 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:43:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash 376595020, now seen corresponding path program 3 times [2022-01-18 02:43:56,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:56,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725769946] [2022-01-18 02:43:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:56,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:43:56,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:56,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725769946] [2022-01-18 02:43:56,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725769946] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:56,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880633225] [2022-01-18 02:43:56,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:43:56,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:56,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:56,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:56,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:43:56,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:43:56,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:56,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:43:56,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:57,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:57,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880633225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:57,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:57,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 02:43:57,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731145414] [2022-01-18 02:43:57,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:57,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:43:57,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:43:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:43:57,670 INFO L87 Difference]: Start difference. First operand 37534 states and 173193 transitions. Second operand has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 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) [2022-01-18 02:44:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:01,277 INFO L93 Difference]: Finished difference Result 199226 states and 907691 transitions. [2022-01-18 02:44:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:44:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 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 108 [2022-01-18 02:44:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:02,595 INFO L225 Difference]: With dead ends: 199226 [2022-01-18 02:44:02,595 INFO L226 Difference]: Without dead ends: 192938 [2022-01-18 02:44:02,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2815 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1460, Invalid=6912, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 02:44:02,623 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 2552 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:02,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 2560 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:44:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192938 states. [2022-01-18 02:44:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192938 to 59172. [2022-01-18 02:44:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59172 states, 59171 states have (on average 4.771611093272042) internal successors, (282341), 59171 states have internal predecessors, (282341), 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) [2022-01-18 02:44:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59172 states to 59172 states and 282341 transitions. [2022-01-18 02:44:06,052 INFO L78 Accepts]: Start accepts. Automaton has 59172 states and 282341 transitions. Word has length 108 [2022-01-18 02:44:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:06,052 INFO L470 AbstractCegarLoop]: Abstraction has 59172 states and 282341 transitions. [2022-01-18 02:44:06,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 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) [2022-01-18 02:44:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 59172 states and 282341 transitions. [2022-01-18 02:44:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:44:06,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:06,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:06,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:06,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:06,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:44:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:06,812 INFO L85 PathProgramCache]: Analyzing trace with hash 969736390, now seen corresponding path program 4 times [2022-01-18 02:44:06,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:06,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790798554] [2022-01-18 02:44:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:06,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:06,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790798554] [2022-01-18 02:44:06,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790798554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648817915] [2022-01-18 02:44:06,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:44:06,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:06,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:06,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:44:07,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:44:07,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:07,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:44:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:44:07,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:44:07,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648817915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:07,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:07,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 02:44:07,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816036696] [2022-01-18 02:44:07,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:07,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:44:07,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:07,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:44:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:44:07,681 INFO L87 Difference]: Start difference. First operand 59172 states and 282341 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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) [2022-01-18 02:44:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:11,257 INFO L93 Difference]: Finished difference Result 220423 states and 1010684 transitions. [2022-01-18 02:44:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:44:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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 108 [2022-01-18 02:44:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:12,855 INFO L225 Difference]: With dead ends: 220423 [2022-01-18 02:44:12,855 INFO L226 Difference]: Without dead ends: 207295 [2022-01-18 02:44:12,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1445, Invalid=6037, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:44:12,857 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2796 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:12,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 2289 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:44:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207295 states. [2022-01-18 02:44:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207295 to 90072. [2022-01-18 02:44:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90072 states, 90071 states have (on average 4.945931542893939) internal successors, (445485), 90071 states have internal predecessors, (445485), 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) [2022-01-18 02:44:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90072 states to 90072 states and 445485 transitions. [2022-01-18 02:44:17,639 INFO L78 Accepts]: Start accepts. Automaton has 90072 states and 445485 transitions. Word has length 108 [2022-01-18 02:44:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:17,640 INFO L470 AbstractCegarLoop]: Abstraction has 90072 states and 445485 transitions. [2022-01-18 02:44:17,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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) [2022-01-18 02:44:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 90072 states and 445485 transitions. [2022-01-18 02:44:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:44:17,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:17,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:17,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:18,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 02:44:18,119 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:44:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1499822858, now seen corresponding path program 5 times [2022-01-18 02:44:18,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47007656] [2022-01-18 02:44:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:18,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:18,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47007656] [2022-01-18 02:44:18,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47007656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139209063] [2022-01-18 02:44:18,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:44:18,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:18,240 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:18,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:44:18,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:44:18,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:18,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:44:18,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:18,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:18,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139209063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:18,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:18,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:44:18,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425752887] [2022-01-18 02:44:18,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:18,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:44:18,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:44:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:44:18,926 INFO L87 Difference]: Start difference. First operand 90072 states and 445485 transitions. Second operand has 24 states, 24 states have (on average 9.75) internal successors, (234), 24 states have internal predecessors, (234), 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) [2022-01-18 02:44:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:21,388 INFO L93 Difference]: Finished difference Result 181845 states and 870201 transitions. [2022-01-18 02:44:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 02:44:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.75) internal successors, (234), 24 states have internal predecessors, (234), 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 108 [2022-01-18 02:44:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:22,369 INFO L225 Difference]: With dead ends: 181845 [2022-01-18 02:44:22,370 INFO L226 Difference]: Without dead ends: 172587 [2022-01-18 02:44:22,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:44:22,371 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1162 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:22,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 1543 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:44:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172587 states. [2022-01-18 02:44:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172587 to 116193. [2022-01-18 02:44:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116193 states, 116192 states have (on average 5.060331175984577) internal successors, (587970), 116192 states have internal predecessors, (587970), 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) [2022-01-18 02:44:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 587970 transitions. [2022-01-18 02:44:27,344 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 587970 transitions. Word has length 108 [2022-01-18 02:44:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:27,345 INFO L470 AbstractCegarLoop]: Abstraction has 116193 states and 587970 transitions. [2022-01-18 02:44:27,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.75) internal successors, (234), 24 states have internal predecessors, (234), 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) [2022-01-18 02:44:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 587970 transitions. [2022-01-18 02:44:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:44:28,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:28,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:28,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:28,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 02:44:28,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:44:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 529963872, now seen corresponding path program 6 times [2022-01-18 02:44:28,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871773446] [2022-01-18 02:44:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:28,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:28,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871773446] [2022-01-18 02:44:28,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871773446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688739485] [2022-01-18 02:44:28,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:44:28,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:28,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:28,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:44:28,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:44:28,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:44:28,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:29,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688739485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:29,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:29,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 02:44:29,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195212914] [2022-01-18 02:44:29,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:29,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:44:29,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:44:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:44:29,322 INFO L87 Difference]: Start difference. First operand 116193 states and 587970 transitions. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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) [2022-01-18 02:44:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:34,652 INFO L93 Difference]: Finished difference Result 304577 states and 1453841 transitions. [2022-01-18 02:44:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:44:34,652 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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 108 [2022-01-18 02:44:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:36,526 INFO L225 Difference]: With dead ends: 304577 [2022-01-18 02:44:36,526 INFO L226 Difference]: Without dead ends: 300497 [2022-01-18 02:44:36,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1875, Invalid=8025, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:44:36,528 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1929 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:36,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 2595 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:44:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300497 states. [2022-01-18 02:44:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300497 to 118986. [2022-01-18 02:44:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118986 states, 118985 states have (on average 5.046089843257554) internal successors, (600409), 118985 states have internal predecessors, (600409), 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) [2022-01-18 02:44:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118986 states to 118986 states and 600409 transitions. [2022-01-18 02:44:43,578 INFO L78 Accepts]: Start accepts. Automaton has 118986 states and 600409 transitions. Word has length 108 [2022-01-18 02:44:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:43,578 INFO L470 AbstractCegarLoop]: Abstraction has 118986 states and 600409 transitions. [2022-01-18 02:44:43,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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) [2022-01-18 02:44:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 118986 states and 600409 transitions. [2022-01-18 02:44:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:44:44,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:44,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:44,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:44,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 02:44:44,704 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:44:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash 32164470, now seen corresponding path program 7 times [2022-01-18 02:44:44,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:44,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151656348] [2022-01-18 02:44:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:44,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:44,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:44,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151656348] [2022-01-18 02:44:44,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151656348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:44,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210012064] [2022-01-18 02:44:44,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:44:44,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:44,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:44,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:44,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:44:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:44,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:44:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:45,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:45,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210012064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:45,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:45,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 02:44:45,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55158317] [2022-01-18 02:44:45,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:45,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:44:45,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:44:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:44:45,577 INFO L87 Difference]: Start difference. First operand 118986 states and 600409 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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) [2022-01-18 02:44:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:49,416 INFO L93 Difference]: Finished difference Result 255906 states and 1252966 transitions. [2022-01-18 02:44:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:44:49,416 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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 108 [2022-01-18 02:44:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:51,446 INFO L225 Difference]: With dead ends: 255906 [2022-01-18 02:44:51,446 INFO L226 Difference]: Without dead ends: 250704 [2022-01-18 02:44:51,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=959, Invalid=3597, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:44:51,448 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2458 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:51,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2458 Valid, 2540 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:44:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250704 states. [2022-01-18 02:44:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250704 to 138998. [2022-01-18 02:44:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138998 states, 138997 states have (on average 5.123873177118931) internal successors, (712203), 138997 states have internal predecessors, (712203), 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) [2022-01-18 02:44:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138998 states to 138998 states and 712203 transitions. [2022-01-18 02:44:57,817 INFO L78 Accepts]: Start accepts. Automaton has 138998 states and 712203 transitions. Word has length 108 [2022-01-18 02:44:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:57,817 INFO L470 AbstractCegarLoop]: Abstraction has 138998 states and 712203 transitions. [2022-01-18 02:44:57,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 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) [2022-01-18 02:44:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 138998 states and 712203 transitions. [2022-01-18 02:44:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 02:44:58,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:58,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:58,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:59,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:44:59,071 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:44:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash 417768926, now seen corresponding path program 8 times [2022-01-18 02:44:59,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:59,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208237437] [2022-01-18 02:44:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:59,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:44:59,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:59,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208237437] [2022-01-18 02:44:59,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208237437] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:59,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371047502] [2022-01-18 02:44:59,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:44:59,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:59,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:59,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:59,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:44:59,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:44:59,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:59,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:44:59,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:44:59,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:44:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371047502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:59,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:59,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:44:59,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204997714] [2022-01-18 02:44:59,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:59,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:44:59,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:59,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:44:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:44:59,922 INFO L87 Difference]: Start difference. First operand 138998 states and 712203 transitions. Second operand has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 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) [2022-01-18 02:45:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:03,112 INFO L93 Difference]: Finished difference Result 276266 states and 1342299 transitions. [2022-01-18 02:45:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 02:45:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 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 108 [2022-01-18 02:45:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:05,549 INFO L225 Difference]: With dead ends: 276266 [2022-01-18 02:45:05,550 INFO L226 Difference]: Without dead ends: 267920 [2022-01-18 02:45:05,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:45:05,550 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1050 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:05,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 1665 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:45:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267920 states. [2022-01-18 02:45:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267920 to 163898. [2022-01-18 02:45:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163898 states, 163897 states have (on average 5.14484096719281) internal successors, (843224), 163897 states have internal predecessors, (843224), 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) [2022-01-18 02:45:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163898 states to 163898 states and 843224 transitions. [2022-01-18 02:45:13,474 INFO L78 Accepts]: Start accepts. Automaton has 163898 states and 843224 transitions. Word has length 108 [2022-01-18 02:45:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:13,474 INFO L470 AbstractCegarLoop]: Abstraction has 163898 states and 843224 transitions. [2022-01-18 02:45:13,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 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) [2022-01-18 02:45:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 163898 states and 843224 transitions. [2022-01-18 02:45:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:45:14,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:14,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:14,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:14,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 02:45:14,799 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:45:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1134872982, now seen corresponding path program 9 times [2022-01-18 02:45:14,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:14,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890024681] [2022-01-18 02:45:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:14,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 02:45:14,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:14,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890024681] [2022-01-18 02:45:14,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890024681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:14,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090161591] [2022-01-18 02:45:14,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:45:14,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:14,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:14,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:14,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:45:14,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:45:14,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:15,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:45:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 02:45:15,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 02:45:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090161591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:15,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:15,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:45:15,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975108176] [2022-01-18 02:45:15,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:15,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:45:15,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:45:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:45:15,537 INFO L87 Difference]: Start difference. First operand 163898 states and 843224 transitions. Second operand has 24 states, 24 states have (on average 9.541666666666666) internal successors, (229), 24 states have internal predecessors, (229), 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) [2022-01-18 02:45:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:19,041 INFO L93 Difference]: Finished difference Result 295955 states and 1436110 transitions. [2022-01-18 02:45:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 02:45:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.541666666666666) internal successors, (229), 24 states have internal predecessors, (229), 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 112 [2022-01-18 02:45:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:21,360 INFO L225 Difference]: With dead ends: 295955 [2022-01-18 02:45:21,360 INFO L226 Difference]: Without dead ends: 295955 [2022-01-18 02:45:21,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 02:45:21,361 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1224 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:21,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2137 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:45:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295955 states. [2022-01-18 02:45:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295955 to 198603. [2022-01-18 02:45:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198603 states, 198602 states have (on average 5.120814493308225) internal successors, (1017004), 198602 states have internal predecessors, (1017004), 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) [2022-01-18 02:45:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198603 states to 198603 states and 1017004 transitions. [2022-01-18 02:45:29,903 INFO L78 Accepts]: Start accepts. Automaton has 198603 states and 1017004 transitions. Word has length 112 [2022-01-18 02:45:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:29,904 INFO L470 AbstractCegarLoop]: Abstraction has 198603 states and 1017004 transitions. [2022-01-18 02:45:29,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.541666666666666) internal successors, (229), 24 states have internal predecessors, (229), 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) [2022-01-18 02:45:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 198603 states and 1017004 transitions. [2022-01-18 02:45:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:45:31,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:31,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:31,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:31,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:31,467 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:45:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2057924448, now seen corresponding path program 10 times [2022-01-18 02:45:31,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:31,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445363176] [2022-01-18 02:45:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:31,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:31,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445363176] [2022-01-18 02:45:31,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445363176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946666954] [2022-01-18 02:45:31,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:45:31,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:31,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:31,572 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:31,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:45:31,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:45:31,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:31,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:45:31,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:32,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:32,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946666954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:32,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:32,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:45:32,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928526269] [2022-01-18 02:45:32,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:32,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:45:32,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:45:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:45:32,292 INFO L87 Difference]: Start difference. First operand 198603 states and 1017004 transitions. Second operand has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 24 states have internal predecessors, (244), 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) [2022-01-18 02:45:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:36,820 INFO L93 Difference]: Finished difference Result 353261 states and 1754798 transitions. [2022-01-18 02:45:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 02:45:36,820 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 24 states have internal predecessors, (244), 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 112 [2022-01-18 02:45:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:38,997 INFO L225 Difference]: With dead ends: 353261 [2022-01-18 02:45:38,997 INFO L226 Difference]: Without dead ends: 352418 [2022-01-18 02:45:38,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:45:38,998 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1227 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:38,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 1476 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:45:40,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352418 states. [2022-01-18 02:45:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352418 to 201171. [2022-01-18 02:45:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201171 states, 201170 states have (on average 5.147338072277178) internal successors, (1035490), 201170 states have internal predecessors, (1035490), 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) [2022-01-18 02:45:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201171 states to 201171 states and 1035490 transitions. [2022-01-18 02:45:49,703 INFO L78 Accepts]: Start accepts. Automaton has 201171 states and 1035490 transitions. Word has length 112 [2022-01-18 02:45:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:49,703 INFO L470 AbstractCegarLoop]: Abstraction has 201171 states and 1035490 transitions. [2022-01-18 02:45:49,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 24 states have internal predecessors, (244), 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) [2022-01-18 02:45:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 201171 states and 1035490 transitions. [2022-01-18 02:45:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:45:50,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:50,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:50,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:50,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:50,612 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:45:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1584486864, now seen corresponding path program 11 times [2022-01-18 02:45:50,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:50,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117853462] [2022-01-18 02:45:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:50,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:50,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117853462] [2022-01-18 02:45:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117853462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340830313] [2022-01-18 02:45:50,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:45:50,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:50,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:50,727 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:50,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:45:50,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:45:50,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:50,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:45:50,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:51,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:51,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340830313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:51,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:51,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:45:51,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731761428] [2022-01-18 02:45:51,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:51,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:45:51,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:45:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:45:51,477 INFO L87 Difference]: Start difference. First operand 201171 states and 1035490 transitions. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 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) [2022-01-18 02:45:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:54,553 INFO L93 Difference]: Finished difference Result 254827 states and 1279719 transitions. [2022-01-18 02:45:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 02:45:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 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 112 [2022-01-18 02:45:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:57,415 INFO L225 Difference]: With dead ends: 254827 [2022-01-18 02:45:57,415 INFO L226 Difference]: Without dead ends: 249475 [2022-01-18 02:45:57,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:57,416 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 1020 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:57,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1448 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:45:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249475 states. [2022-01-18 02:46:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249475 to 199419. [2022-01-18 02:46:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199419 states, 199418 states have (on average 5.140378501439188) internal successors, (1025084), 199418 states have internal predecessors, (1025084), 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) [2022-01-18 02:46:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199419 states to 199419 states and 1025084 transitions. [2022-01-18 02:46:06,478 INFO L78 Accepts]: Start accepts. Automaton has 199419 states and 1025084 transitions. Word has length 112 [2022-01-18 02:46:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:06,478 INFO L470 AbstractCegarLoop]: Abstraction has 199419 states and 1025084 transitions. [2022-01-18 02:46:06,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 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) [2022-01-18 02:46:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 199419 states and 1025084 transitions. [2022-01-18 02:46:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:46:07,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:07,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:07,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 02:46:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:07,381 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:46:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1664249752, now seen corresponding path program 12 times [2022-01-18 02:46:07,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:07,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289269291] [2022-01-18 02:46:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 02:46:07,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:07,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289269291] [2022-01-18 02:46:07,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289269291] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:07,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894953320] [2022-01-18 02:46:07,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:46:07,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:07,484 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:07,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:46:07,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:46:07,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:07,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:46:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:07,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:07,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894953320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:07,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:07,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 14 [2022-01-18 02:46:07,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004877856] [2022-01-18 02:46:07,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:07,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 02:46:07,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 02:46:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:46:07,849 INFO L87 Difference]: Start difference. First operand 199419 states and 1025084 transitions. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2022-01-18 02:46:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:14,095 INFO L93 Difference]: Finished difference Result 483692 states and 2406093 transitions. [2022-01-18 02:46:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:46:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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 112 [2022-01-18 02:46:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:17,915 INFO L225 Difference]: With dead ends: 483692 [2022-01-18 02:46:17,915 INFO L226 Difference]: Without dead ends: 477668 [2022-01-18 02:46:17,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=426, Invalid=1644, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:46:17,916 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1433 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:17,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 1520 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:46:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477668 states. [2022-01-18 02:46:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477668 to 378609. [2022-01-18 02:46:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378609 states, 378608 states have (on average 5.155163123864261) internal successors, (1951786), 378608 states have internal predecessors, (1951786), 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) [2022-01-18 02:46:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378609 states to 378609 states and 1951786 transitions. [2022-01-18 02:46:36,103 INFO L78 Accepts]: Start accepts. Automaton has 378609 states and 1951786 transitions. Word has length 112 [2022-01-18 02:46:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:36,103 INFO L470 AbstractCegarLoop]: Abstraction has 378609 states and 1951786 transitions. [2022-01-18 02:46:36,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2022-01-18 02:46:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 378609 states and 1951786 transitions. [2022-01-18 02:46:38,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:46:38,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:38,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:38,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:38,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 02:46:38,355 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:46:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2016409122, now seen corresponding path program 13 times [2022-01-18 02:46:38,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:38,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072346593] [2022-01-18 02:46:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:38,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:46:38,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072346593] [2022-01-18 02:46:38,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072346593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963696903] [2022-01-18 02:46:38,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:46:38,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:38,466 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:38,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:46:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:38,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:46:38,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:46:38,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:46:39,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963696903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:39,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:39,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:46:39,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066011029] [2022-01-18 02:46:39,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:39,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:46:39,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:46:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:46:39,229 INFO L87 Difference]: Start difference. First operand 378609 states and 1951786 transitions. Second operand has 24 states, 24 states have (on average 10.75) internal successors, (258), 24 states have internal predecessors, (258), 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) [2022-01-18 02:46:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:47,815 INFO L93 Difference]: Finished difference Result 556693 states and 2799985 transitions. [2022-01-18 02:46:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 02:46:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.75) internal successors, (258), 24 states have internal predecessors, (258), 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 112 [2022-01-18 02:46:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:55,367 INFO L225 Difference]: With dead ends: 556693 [2022-01-18 02:46:55,367 INFO L226 Difference]: Without dead ends: 538657 [2022-01-18 02:46:55,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=417, Invalid=1389, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 02:46:55,368 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1245 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:55,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1791 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:46:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538657 states. [2022-01-18 02:47:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538657 to 415717. [2022-01-18 02:47:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415717 states, 415716 states have (on average 5.194606413994169) internal successors, (2159481), 415716 states have internal predecessors, (2159481), 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) [2022-01-18 02:47:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415717 states to 415717 states and 2159481 transitions. [2022-01-18 02:47:16,517 INFO L78 Accepts]: Start accepts. Automaton has 415717 states and 2159481 transitions. Word has length 112 [2022-01-18 02:47:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:16,517 INFO L470 AbstractCegarLoop]: Abstraction has 415717 states and 2159481 transitions. [2022-01-18 02:47:16,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.75) internal successors, (258), 24 states have internal predecessors, (258), 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) [2022-01-18 02:47:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 415717 states and 2159481 transitions. [2022-01-18 02:47:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:47:18,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:18,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:18,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:18,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:18,935 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:47:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1379270554, now seen corresponding path program 14 times [2022-01-18 02:47:18,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279116734] [2022-01-18 02:47:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:18,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:19,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:19,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279116734] [2022-01-18 02:47:19,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279116734] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:19,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725016485] [2022-01-18 02:47:19,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:47:19,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:19,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:19,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:19,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:47:19,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:47:19,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:47:19,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:47:19,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:19,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:19,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725016485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:47:19,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:47:19,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2022-01-18 02:47:19,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109820895] [2022-01-18 02:47:19,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:47:19,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:47:19,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:47:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:47:19,918 INFO L87 Difference]: Start difference. First operand 415717 states and 2159481 transitions. Second operand has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 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) [2022-01-18 02:47:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:43,113 INFO L93 Difference]: Finished difference Result 1315682 states and 6403955 transitions. [2022-01-18 02:47:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 02:47:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 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 112 [2022-01-18 02:47:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:57,601 INFO L225 Difference]: With dead ends: 1315682 [2022-01-18 02:47:57,601 INFO L226 Difference]: Without dead ends: 1251392 [2022-01-18 02:47:57,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7467 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3728, Invalid=14904, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 02:47:57,604 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 3513 mSDsluCounter, 7006 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:57,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3513 Valid, 6376 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:47:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251392 states. [2022-01-18 02:48:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251392 to 567791. [2022-01-18 02:48:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567791 states, 567790 states have (on average 5.276563518202153) internal successors, (2995980), 567790 states have internal predecessors, (2995980), 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) [2022-01-18 02:48:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567791 states to 567791 states and 2995980 transitions. [2022-01-18 02:48:44,162 INFO L78 Accepts]: Start accepts. Automaton has 567791 states and 2995980 transitions. Word has length 112 [2022-01-18 02:48:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:44,163 INFO L470 AbstractCegarLoop]: Abstraction has 567791 states and 2995980 transitions. [2022-01-18 02:48:44,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 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) [2022-01-18 02:48:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 567791 states and 2995980 transitions. [2022-01-18 02:48:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:48:48,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:48,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:48,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 02:48:49,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:49,026 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 02:48:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1578985752, now seen corresponding path program 15 times [2022-01-18 02:48:49,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45696982] [2022-01-18 02:48:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:49,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:49,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:49,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45696982] [2022-01-18 02:48:49,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45696982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:49,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790922211] [2022-01-18 02:48:49,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:48:49,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:49,217 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:49,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:48:49,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:48:49,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:49,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:48:49,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:50,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:50,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790922211] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:50,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:50,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:48:50,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291479331] [2022-01-18 02:48:50,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:50,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:48:50,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:48:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:48:50,600 INFO L87 Difference]: Start difference. First operand 567791 states and 2995980 transitions. Second operand has 24 states, 24 states have (on average 10.291666666666666) internal successors, (247), 24 states have internal predecessors, (247), 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)